{"title":"Cast Iron Circulation Pumps","description":"\u003cp\u003eCast Iron Circulation Pumps are designed to circulate water through heating, cooling, HVAC, and hydronic systems. They are commonly used in residential, commercial, and building services applications for domestic heating, floor heating, and other water circulation requirements.\u003c\/p\u003e\n\n\u003cp\u003eThe range includes cast iron circulators with three-speed, variable-speed, and electronically controlled configurations, with different flow and head capacities to suit a variety of system requirements. Applications include central heating, floor heating, boilers, air conditioning, cooling, and other hydronic circulation systems.\u003c\/p\u003e\n\n\u003cp\u003eShop Cast Iron Circulation Pumps online with Australia-wide delivery and expert support.\u003c\/p\u003e","products":[{"product_id":"dab-va35-130-cast-iron-compact-circulator-pump-for-domestic-hot-water-with-technopolymer-impeller","title":"DAB VA35-130 Cast Iron Compact Circulator Pump for Domestic Hot Water with Technopolymer Impeller","description":"\u003cp\u003eProvides reliable circulation in domestic hot water systems maintaining stable temperatures at fixtures. This DAB VA35-130 Operates quietly to avoid disturbing living spaces while ensuring timely hot water delivery. Suitable for standard residential plumbing installations.\u003c\/p\u003e\n\u003cp\u003eDelivers 50 L\/min maximum flow at 4.3 m head with 56W power consumption. Pressure characteristics suit standard residential hot water installations, providing adequate pressure for typical household requirements.\u003c\/p\u003e\n\u003cp\u003eFeatures cast iron pump body with technopolymer impeller and stainless steel shaft. IP44-rated enclosure protects against moisture ingress and solid particles. Rated for liquid temperatures up to 110°C, ensuring compatibility with domestic hot water systems.\u003c\/p\u003e\n\u003cp\u003eEquipped with 1½€³ BSPM connections for straightforward plumbing integration with standard fittings. Ideal for domestic hot water recirculation in residential plumbing systems requiring compact and energy-efficient circulation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRated motor speed of 2455 rpm ensures consistent flow performance\u003c\/li\u003e\n\u003cli\u003eNominal current draw of just 0.25 A for low electrical load\u003c\/li\u003e\n\u003cli\u003ePressure-rated to 10 bar (1000 kPa) for standard residential systems\u003c\/li\u003e\n\u003cli\u003eOperates reliably in fluid temperatures as low as -10°C\u003c\/li\u003e\n\u003cli\u003eDie-cast aluminium motor casing with stainless steel stator jacket\u003c\/li\u003e\n\u003cli\u003eBrass air vent plug for convenient system bleeding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DAB","offers":[{"title":"Default Title","offer_id":50978261663991,"sku":"702734","price":442.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/dab-va35-130-cast-iron-compact-circulator-pump-for-domestic-hot-water-with-technopolymer-impeller.png?v=1785221755"},{"product_id":"dab-va55-130-cast-iron-energy-efficient-circulator-pump-for-heating-systems-with-technopolymer-impeller","title":"DAB VA55-130 Cast Iron Energy Efficient Circulator Pump for Heating Systems with Technopolymer Impeller","description":"\u003cp\u003eDelivers consistent hot water distribution throughout residential heating hydronic circuits. Maintains stable temperatures in boiler-fed applications operating with minimal acoustic disturbance to preserve living comfort. This DAB VA55-130 is Designed for reliable integration with standard heating system plumbing.\u003c\/p\u003e\n\u003cp\u003eProvides 60 L\/min maximum flow at 5.4 m head with 70W power consumption. Pressure capabilities align with standard domestic hydronic system requirements, ensuring stable performance under varying load demands.\u003c\/p\u003e\n\u003cp\u003eFeatures cast iron construction with technopolymer impeller and stainless steel shaft. IP44-rated enclosure protects against moisture ingress and solid particles. Rated for liquid temperatures up to 110°C.\u003c\/p\u003e\n\u003cp\u003eUtilizes 1½€³ BSPM connections for easy integration with existing plumbing. Designed for residential hydronic heating systems and boiler-fed applications requiring consistent and reliable hot water distribution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRated motor speed of 2400 rpm for optimised heating system circulation\u003c\/li\u003e\n\u003cli\u003eNominal current draw of 0.3 A for efficient electrical consumption\u003c\/li\u003e\n\u003cli\u003ePressure-rated to 10 bar (1000 kPa) for standard hydronic systems\u003c\/li\u003e\n\u003cli\u003eOperates reliably in fluid temperatures as low as -10°C\u003c\/li\u003e\n\u003cli\u003eLightweight construction at just 2.5 kg for easy handling\u003c\/li\u003e\n\u003cli\u003eCompact dimensions: 130mm length with 104mm flange-to-flange spacing\u003c\/li\u003e\n\u003cli\u003eDie-cast aluminium motor housing with stainless steel stator can\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DAB","offers":[{"title":"Default Title","offer_id":50978261827831,"sku":"702735","price":469.4,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/dab-va55-130-cast-iron-energy-efficient-circulator-pump-for-heating-systems-with-technopolymer-impeller.png?v=1785221757"},{"product_id":"dab-va65-130-cast-iron-3-speed-circulator-pump-for-heating-systems-with-technopolymer-impeller","title":"DAB VA65-130 Cast Iron 3-Speed Circulator Pump for Heating Systems with Technopolymer Impeller","description":"\u003cp\u003eDelivers variable flow rates to match changing heating demands throughout operating cycles. Maintains consistent temperatures while optimizing energy utilization in residential hydronic systems. This DAB VA65-130 is Designed for quiet operation to enhance living comfort.\u003c\/p\u003e\n\u003cp\u003eSupplies 60 L\/min maximum flow at 6.0 m head across three speed settings (55W-78W). Develops pressure suitable for standard heating system installations, ensuring reliable performance across varying load conditions.\u003c\/p\u003e\n\u003cp\u003eConstructed from cast iron with technopolymer impeller and stainless steel shaft. Three-speed motor enables precise output control. IP44-rated enclosure protects against environmental moisture and solid particles.\u003c\/p\u003e\n\u003cp\u003eFeatures 1½€³ BSPM connections for simplified plumbing installation. Operates with liquid temperatures from 2°C to 110°C. Ideal for residential hydronic heating systems requiring adjustable flow control with three-speed versatility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRated motor speed of 2310 rpm at maximum speed setting\u003c\/li\u003e\n\u003cli\u003eMaximum power input of 78W with nominal current of 0.34 A\u003c\/li\u003e\n\u003cli\u003ePressure-rated to 10 bar (1000 kPa) for residential heating systems\u003c\/li\u003e\n\u003cli\u003eThree-speed motor delivers 55W, 65W, and 78W power options\u003c\/li\u003e\n\u003cli\u003eCanned rotor design with die-cast aluminium motor casing\u003c\/li\u003e\n\u003cli\u003eStainless steel stator jacket for corrosion protection\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DAB","offers":[{"title":"Default Title","offer_id":50978261860599,"sku":"702736","price":507.35,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/dab-va65-130-cast-iron-3-speed-circulator-pump-for-heating-systems-with-technopolymer-impeller.png?v=1785221759"},{"product_id":"grundfos-ups-25-60-cast-iron-three-speed-circulator-pump-for-radiator-heating","title":"Grundfos UPS 25-60 Cast Iron Three Speed Circulator Pump for Radiator Heating with Composite Impeller","description":"\u003cp\u003eClosed-loop radiator heating systems do not carry potable water, so cast iron becomes a suitable housing material. The Grundfos UPS 25-60 is built with a cast iron pump body for those systems, positioned for standard domestic heating circuits where the circulating fluid stays within the sealed system.\u003c\/p\u003e\r\n\u003cp\u003eAt its highest speed setting, the pump delivers 31.7 L\/Min against a maximum head of 6 m, powered by a 70 W motor drawing 0.3 A on a 1 x 240 V supply. Three selectable speeds step power from 50 W upward, giving installers the flexibility to balance the circuit against the actual radiator count and pipe run without oversizing the pump.\u003c\/p\u003e\r\n\u003cp\u003eThe canned rotor motor construction removes the need for a mechanical shaft seal, with the rotor and bearings lubricated directly by the circulating heating water. Liquid temperature tolerance extends from 2°C to 110°C, covering both standard radiator circuits and higher-temperature boiler setups.\u003c\/p\u003e\r\n\u003cp\u003eAn IP44 enclosure suits undercover fitting in a plant room or airing cupboard, and the compact 130 mm port-to-port body matches tighter pipe centres than the 180 mm variant. Maximum system pressure is rated to 10 bar, consistent with typical domestic heating installations.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eCast iron pump housing specified for closed-loop heating systems where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003eThree-speed selector permits field adjustment of pump output from 50 W to 70 W\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design integrates the pump and motor without a mechanical shaft seal\u003c\/li\u003e\r\n\u003cli\u003eCeramic shaft and bearings are lubricated directly by the circulating heating water\u003c\/li\u003e\r\n\u003cli\u003eComposite impeller construction delivers consistent hydraulic performance in closed-loop water and glycol mixtures\u003c\/li\u003e\r\n\u003cli\u003eLiquid temperature tolerance from 2°C to 110°C covers standard radiator circuits and higher-temperature boiler installations\u003c\/li\u003e\r\n\u003cli\u003eCompact 130 mm port-to-port body dimension accommodates tighter pipe centres\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282406135,"sku":"96281476","price":436.75,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-25-60-cast-iron-three-speed-circulator-pump-for-radiator-heating.png?v=1785223220"},{"product_id":"grundfos-ups-25-60-cast-iron-three-speed-circulator-pump-for-underfloor-heating","title":"Grundfos UPS 25-60 Cast Iron Three Speed Circulator Pump for Underfloor Heating with Composite Impeller","description":"\u003cp\u003eUnderfloor heating loops and longer radiator circuits often require slightly more flow than a compact pump provides, and the 180 mm-bodied Grundfos UPS 25-60 covers that gap while retaining the cast iron construction suited to closed-loop systems. It is built for domestic heating installations where the pump sits within a sealed circuit rather than a potable water line.\u003c\/p\u003e\r\n\u003cp\u003eAt full speed the pump reaches 36.2 L\/Min against a maximum head of 6 m, drawing 60 W and 0.28 A from a 1 x 240 V supply across its top setting. The three-speed switch allows output to be reduced on smaller zones, with power stepping down to 50 W at the lowest setting to match actual heat demand.\u003c\/p\u003e\r\n\u003cp\u003eAs with other models in the UPS range, a canned rotor eliminates the mechanical shaft seal, with bearings lubricated by the system water itself. The cast iron housing and composite impeller are rated for liquid temperatures from 2°C to 110°C, covering both standard radiator loops and underfloor manifolds running at lower flow temperatures.\u003c\/p\u003e\r\n\u003cp\u003eMaximum operating pressure is 10 bar, and the pump carries an IP44 enclosure rating for undercover installation. At 180 mm port-to-port with 1 1\/2 inch connections, it shares its footprint with the 130 mm model's wider sibling in the cast iron heating range.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop heating systems\u003c\/li\u003e\r\n\u003cli\u003eThree-speed selector permits field adjustment from 50 W to 60 W\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design eliminates the mechanical shaft seal\u003c\/li\u003e\r\n\u003cli\u003eSelf-lubricating ceramic bearings are lubricated directly by the circulating system water\u003c\/li\u003e\r\n\u003cli\u003eComposite impeller construction delivers consistent hydraulic performance in radiator and underfloor heating applications\u003c\/li\u003e\r\n\u003cli\u003eLiquid temperature tolerance from 2°C to 110°C covers standard radiator circuits and low-temperature underfloor manifolds\u003c\/li\u003e\r\n\u003cli\u003eExtended 180 mm port-to-port body dimension accommodates longer heating circuits and standard domestic pipe spacing\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282438903,"sku":"96281483","price":436.75,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-25-60-cast-iron-three-speed-circulator-pump-for-underfloor-heating.png?v=1785223222"},{"product_id":"grundfos-ups-25-80-cast-iron-three-speed-circulator-pump-for-hydronic-heating","title":"Grundfos UPS 25-80 Cast Iron Three Speed Circulator Pump for Hydronic Heating with Composite Impeller","description":"\u003cp\u003eLarger homes with extended radiator networks or multiple heating zones place more resistance on the circulating pump than a single small loop, requiring additional head to maintain consistent flow. The Grundfos UPS 25-80 is sized to meet that requirement, with cast iron construction suited to closed-loop heating systems.\u003c\/p\u003e\r\n\u003cp\u003eThe pump delivers 80 L\/Min at its highest speed setting against 8 m of maximum head, with power stepping from 114 W to 160 W across its three selectable speeds and current reaching 0.7 A on a 1 x 240 V supply. That head rating gives it enough reserve to overcome the pressure drop across a larger radiator count or a longer branch circuit.\u003c\/p\u003e\r\n\u003cp\u003eA canned rotor motor removes the mechanical shaft seal, with the rotor and bearings lubricated by the heating water itself. Liquid temperature tolerance extends from -25°C to 110°C, which allows for plant rooms exposed to cold conditions before the heating season begins.\u003c\/p\u003e\r\n\u003cp\u003eThe enclosure steps up to IPX2D for improved contact protection compared with the smaller UPS 25-60 models, and internal thermal protection is built into the motor winding itself. At 180 mm port-to-port with 1 1\/2 inch connections, it fits standard domestic heating pipe centres.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eHigher head rating of 8 m provides additional pressure capability for extended radiator networks and multiple heating zones\u003c\/li\u003e\r\n\u003cli\u003eThree-speed selector permits field adjustment from 114 W to 160 W\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design removes the mechanical shaft seal as a potential leak path in heating applications\u003c\/li\u003e\r\n\u003cli\u003eInternal thermal motor protection safeguards the winding against overload in continuous seasonal operation\u003c\/li\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop heating applications where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003eLiquid temperature tolerance from -25°C to 110°C accommodates plant rooms exposed to cold conditions\u003c\/li\u003e\r\n\u003cli\u003eIPX2D enclosure rating provides protection against dripping water and contact in service environments\u003c\/li\u003e\r\n\u003cli\u003e180 mm port-to-port body dimension aligns with standard domestic heating pipe centres\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282471671,"sku":"95906429","price":945.1,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-25-80-cast-iron-three-speed-circulator-pump-for-hydronic-heating.png?v=1785223224"},{"product_id":"grundfos-ups-32-80-cast-iron-three-speed-circulator-pump-for-commercial-heating","title":"Grundfos UPS 32-80 Cast Iron Three Speed Circulator Pump for Commercial Heating with Composite Impeller","description":"\u003cp\u003eCommercial heating installations and larger residential systems are often built on wider bore pipework from the outset to handle greater heat load. The Grundfos UPS 32-80 matches that with a 2 inch connection, sized for higher-volume closed-loop circuits where narrower connections would restrict flow.\u003c\/p\u003e\r\n\u003cp\u003eAt full speed the pump moves 86 L\/Min against a maximum head of 8 m, with three selectable settings stepping power from 140 W to 230 W and current reaching 1.01 A on a 1 x 240 V supply. The wider connection reduces flow resistance at equivalent volumes compared with the 1 1\/2 inch models, useful as system size and zone count increase.\u003c\/p\u003e\r\n\u003cp\u003eConstruction follows the canned rotor principle used throughout the UPS range, eliminating the mechanical shaft seal in favour of bearings lubricated directly by the circulating water. The cast iron housing suits closed-loop heating applications, with a liquid temperature range from -25°C to 110°C covering both standard and higher-temperature boiler circuits.\u003c\/p\u003e\r\n\u003cp\u003eInternal thermal protection is built into the motor, and the IPX2D enclosure provides contact protection suited to plant room environments. At 180 mm port-to-port, the pump matches the physical footprint of the narrower-bore UPS 25 range, so upgrading from a 25 mm to a 32 mm system does not require re-spacing the connecting pipework.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eLarger 2 inch connections reduce flow restriction and velocity at equivalent volumes\u003c\/li\u003e\r\n\u003cli\u003eThree-speed selector provides performance adjustment from 140 W to 230 W\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design integrates the pump and motor without a mechanical shaft seal\u003c\/li\u003e\r\n\u003cli\u003eInternal thermal motor protection safeguards the winding against overload in continuous service\u003c\/li\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop heating applications where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003eLiquid temperature tolerance from -25°C to 110°C covers standard and higher-temperature boiler circuits\u003c\/li\u003e\r\n\u003cli\u003eIPX2D enclosure rating provides protection against dripping water and contact in service environments\u003c\/li\u003e\r\n\u003cli\u003e180 mm port-to-port body dimension matches the footprint of the narrower-bore UPS 25 range\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282504439,"sku":"95906442","price":1183.35,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-32-80-cast-iron-three-speed-circulator-pump-for-commercial-heating.png?v=1785223225"},{"product_id":"grundfos-ups-25-100-cast-iron-three-speed-circulator-pump-for-multi-zone-heating","title":"Grundfos UPS 25-100 Cast Iron Three Speed Circulator Pump for Multi-Zone Heating with Composite Impeller","description":"\u003cp\u003eHeating circuits with significant pipe resistance, whether from a tall building riser or an extensive multi-storey radiator layout, require more head than a standard domestic circulator can generate. The Grundfos UPS 25-100 is built for that higher-resistance category, with a 10 m head rating at the top of the cast iron UPS range.\u003c\/p\u003e\r\n\u003cp\u003eAt its highest speed setting, the pump delivers 111 L\/Min against a maximum head of 10 m, drawing up to 345 W and 1.52 A on a 1 x 240 V supply. Three selectable speeds step power from 280 W upward, letting the pump be run below its maximum during commissioning while retaining the reserve head for peak load conditions.\u003c\/p\u003e\r\n\u003cp\u003eThe canned rotor motor construction lubricates its own bearings using the circulating heating water, removing the mechanical shaft seal from the design. Liquid temperature tolerance runs from -25°C to 110°C, and the cast iron housing is built for closed-loop systems rather than potable water.\u003c\/p\u003e\r\n\u003cp\u003eGiven the higher power draw, insulation class steps up to H rather than F, and the enclosure carries an IPX4D rating for improved ingress protection. At 180 mm port-to-port with 1 1\/2 inch connections, it retains a familiar footprint for installers working with the smaller UPS 25 models.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eHead rating of 10 m provides pressure capability for tall building risers, multi-storey radiator layouts, and resistance-heavy heating circuits\u003c\/li\u003e\r\n\u003cli\u003eThree-speed selector permits commissioning engineers to run below maximum during set-up while retaining reserve head\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design with self-lubricating bearings eliminates the mechanical shaft seal\u003c\/li\u003e\r\n\u003cli\u003eClass H insulation (180°C) supports continuous operation at full 345 W load\u003c\/li\u003e\r\n\u003cli\u003eIPX4D enclosure rating provides ingress protection against splashing water and dust\u003c\/li\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop heating applications where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003eLiquid temperature tolerance from -25°C to 110°C covers standard radiator circuits and higher-temperature boiler installations\u003c\/li\u003e\r\n\u003cli\u003e180 mm port-to-port body dimension aligns with standard domestic heating pipe centres\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282569975,"sku":"95906480","price":1429.75,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-25-100-cast-iron-three-speed-circulator-pump-for-multi-zone-heating.png?v=1785223227"},{"product_id":"grundfos-ups-32-100-cast-iron-three-speed-circulator-pump-for-hydronic-heating","title":"Grundfos UPS 32-100 Cast Iron Three Speed Circulator Pump for Hydronic Heating with Composite Impeller","description":"\u003cp\u003eLarge heating networks combine both high resistance and high volume, requiring a pump that can deliver both. The Grundfos UPS 32-100 meets that demand by pairing the widest bore in the cast iron UPS range with its tallest head rating, suited to commercial risers, district-style heating loops, and extensive multi-zone residential systems.\u003c\/p\u003e\r\n\u003cp\u003eAt full speed the pump delivers 113.8 L\/Min against a maximum head of 10 m, with three speed settings stepping power from 280 W to 345 W and current reaching 1.52 A on a 1 x 240 V supply. The 2 inch connection reduces flow velocity and associated resistance compared with the narrower-bore UPS 25-100 at equivalent volumes.\u003c\/p\u003e\r\n\u003cp\u003eCanned rotor construction runs through the model, with bearings lubricated by the circulating heating water rather than a mechanical seal. Liquid temperature tolerance extends from -25°C to 110°C, and the cast iron housing is intended for closed-loop heating rather than potable circuits.\u003c\/p\u003e\r\n\u003cp\u003eClass H insulation and an IPX4D enclosure reflect the higher thermal and ingress protection demands of running at 345 W continuously. At 180 mm port-to-port, the pump matches the physical footprint of the 1 1\/2 inch UPS 25-100, allowing bore size to be increased during a system upgrade without altering pump spacing.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eLarger 2 inch connections reduce flow velocity and associated resistance at equivalent volumes\u003c\/li\u003e\r\n\u003cli\u003eHead rating of 10 m provides pressure capability for commercial risers, district-style heating loops, and extensive multi-zone residential systems\u003c\/li\u003e\r\n\u003cli\u003eThree-speed selector permits commissioning engineers to match output to actual system requirements\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design with self-lubricating bearings eliminates the mechanical shaft seal\u003c\/li\u003e\r\n\u003cli\u003eClass H insulation (180°C) supports continuous operation at full 345 W load\u003c\/li\u003e\r\n\u003cli\u003eIPX4D enclosure rating provides ingress protection against splashing water and dust\u003c\/li\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop heating applications where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003e180 mm port-to-port body dimension matches the footprint of the 1 1\/2 inch UPS 25-100\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282602743,"sku":"95906500","price":1573.05,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-32-100-cast-iron-three-speed-circulator-pump-for-hydronic-heating.png?v=1785223229"},{"product_id":"grundfos-ups-25-120-cast-iron-three-speed-circulator-pump-for-space-heating","title":"Grundfos UPS 25-120 Cast Iron Three Speed Circulator Pump for Space Heating with Composite Impeller","description":"\u003cp\u003eMulti-storey risers and systems with unusually long branch runs require more head than any other pump in the UPS cast iron range can generate. The Grundfos UPS 25-120 sits at the top of that lineup, purpose-built for closed-loop circuits where vertical lift or extended pipe resistance would otherwise limit circulation to the highest points of the system.\u003c\/p\u003e\r\n\u003cp\u003eAt full speed the pump delivers 34 L\/Min against a maximum head of 12 m, the tallest rating among the UPS 25 models, powered by up to 230 W and 0.99 A on a 1 x 240 V supply. Three selectable speeds step power from 125 W upward, allowing the pump to be run below maximum on shorter branches while retaining full head capacity where the riser demands it.\u003c\/p\u003e\r\n\u003cp\u003eThe canned rotor motor lubricates its own bearings using the circulating heating water, a design carried through the entire UPS range that removes the mechanical shaft seal. Liquid temperature tolerance runs from -25°C up to 95°C, slightly lower than the 110°C rating of other UPS 25 variants, reflecting its focus on standard heating rather than higher-temperature boiler applications.\u003c\/p\u003e\r\n\u003cp\u003eAn IPX2D enclosure provides contact protection, and internal thermal protection is built into the motor winding. At 180 mm port-to-port with 1 1\/2 inch connections, it retains the same physical footprint as the other 180 mm UPS 25 models, making it a direct upgrade path where an existing installation needs more head without a larger bore.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eTallest head rating in the UPS 25 range at 12 m for multi-storey risers and systems with unusually long branch runs\u003c\/li\u003e\r\n\u003cli\u003eThree-speed selector permits field adjustment from 125 W to 230 W\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design with self-lubricating bearings eliminates the mechanical shaft seal\u003c\/li\u003e\r\n\u003cli\u003eInternal thermal motor protection safeguards the winding against overload in continuous operation\u003c\/li\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop heating applications where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003eLiquid temperature tolerance from -25°C to 95°C for standard heating applications and cold plant room environments\u003c\/li\u003e\r\n\u003cli\u003eIPX2D enclosure rating provides protection against dripping water and contact in service environments\u003c\/li\u003e\r\n\u003cli\u003e180 mm port-to-port body dimension matches the footprint of other UPS 25 models\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282635511,"sku":"52588336","price":1244.6,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-25-120-cast-iron-three-speed-circulator-pump-for-space-heating.png?v=1785223231"},{"product_id":"grundfos-alpha2-25-60-cast-iron-autoadapt-circulator-pump-130mm-with-composite-impeller","title":"Grundfos Alpha2 25-60 Cast Iron AUTOADAPT Circulator Pump 130mm with Composite Impeller","description":"\u003cp\u003eBalancing a radiator heating system manually, adjusting a speed switch through the seasons as demand changes, is eliminated by the Grundfos Alpha2 25-60's AUTOADAPT function. Built with a cast iron housing for closed-loop domestic heating circuits, it reads system resistance continuously and adjusts output to match, rather than running at a fixed setting regardless of actual load.\u003c\/p\u003e\r\n\u003cp\u003eEven at peak output the pump draws only 34 W, delivering 32.3 L\/Min against 6 m of maximum head, with current consumption automatically varying between 0.04 A and 0.32 A on a 1 x 240 V supply as demand changes throughout the day. An Energy Efficiency Index of 0.17 reflects the electronically commutated motor's reduced power draw.\u003c\/p\u003e\r\n\u003cp\u003eAn automatic reduced night-time duty function lowers output further during low-demand overnight periods, detected from system flow rather than a preset timer. The cast iron housing and composite impeller are built for standard closed-loop radiator circuits, with a liquid temperature range from 2°C to 110°C.\u003c\/p\u003e\r\n\u003cp\u003eHoused at a compact 130 mm port-to-port length, the pump suits tighter valve spacing than the 180 mm variant, and an IPX4D enclosure provides a higher level of ingress protection than the IP44 rating typical of fixed-speed heating circulators. Class F insulation completes the specification.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eAUTOADAPT function reads system resistance continuously and adjusts pump output automatically\u003c\/li\u003e\r\n\u003cli\u003eAutomatic reduced night-time duty mode lowers output during low-demand overnight periods, detected from system flow\u003c\/li\u003e\r\n\u003cli\u003eElectronically commutated permanent magnet motor achieves an Energy Efficiency Index of 0.17\u003c\/li\u003e\r\n\u003cli\u003eCurrent consumption self-adjusts from 0.04 A to 0.32 A as the pump responds to changing system demand\u003c\/li\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop radiator circuits where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003eComposite impeller construction delivers consistent hydraulic performance in closed-loop heating applications\u003c\/li\u003e\r\n\u003cli\u003eCompact 130 mm port-to-port body dimension accommodates tighter valve spacing\u003c\/li\u003e\r\n\u003cli\u003eIPX4D enclosure rating provides ingress protection against splashing water and dust\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282668279,"sku":"99411150","price":773.55,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-alpha2-25-60-cast-iron-autoadapt-circulator-pump-130mm-with-composite-impeller.png?v=1785223232"},{"product_id":"grundfos-alpha2-25-60-cast-iron-autoadapt-circulator-pump-180mm-with-composite-impeller","title":"Grundfos Alpha2 25-60 Cast Iron AUTOADAPT Circulator Pump 180mm with Composite Impeller","description":"\u003cp\u003eOlder heating installations or systems specified with wider valve centres require a longer pump body than the compact Alpha2 variant provides. The Grundfos Alpha2 25-60 180 fills that role while retaining the same AUTOADAPT self-adjustment, built for domestic radiator circuits where pipe spacing rules out the shorter 130 mm model.\u003c\/p\u003e\r\n\u003cp\u003ePeak output reaches 32.3 L\/Min against a maximum head of 6 m, drawn from a 34 W motor with current consumption automatically adjusting between 0.04 A and 0.32 A on a 1 x 240 V supply as the pump continuously tracks system resistance. The same 0.17 Energy Efficiency Index applies as the 130 mm version.\u003c\/p\u003e\r\n\u003cp\u003eRather than stepping between fixed speeds, output adjusts continuously to match actual heating demand, with an automatic reduced night-time duty mode lowering consumption further during low-flow overnight periods based on detected system behaviour. The cast iron housing and composite impeller suit closed-loop radiator circuits, with liquid temperatures supported from 2°C to 110°C.\u003c\/p\u003e\r\n\u003cp\u003eAt 180 mm port-to-port with 1 1\/2 inch connections, the pump directly replaces older fixed-speed circulators of the same body length without requiring pipework modification. An IPX4D enclosure and Class F insulation complete the specification.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eAUTOADAPT function provides continuous self-adjusting speed control without manual intervention\u003c\/li\u003e\r\n\u003cli\u003eAutomatic reduced night-time duty mode lowers consumption during low-flow overnight periods, detected from system behaviour\u003c\/li\u003e\r\n\u003cli\u003eElectronically commutated motor achieves an Energy Efficiency Index of 0.17\u003c\/li\u003e\r\n\u003cli\u003eCurrent consumption self-adjusts from 0.04 A to 0.32 A as the pump continuously tracks system resistance\u003c\/li\u003e\r\n\u003cli\u003eExtended 180 mm port-to-port body dimension accommodates wider valve spacing\u003c\/li\u003e\r\n\u003cli\u003eCast iron housing specified for closed-loop radiator circuits where potable water approval is not required\u003c\/li\u003e\r\n\u003cli\u003eComposite impeller construction delivers consistent hydraulic performance in closed-loop heating applications\u003c\/li\u003e\r\n\u003cli\u003eIPX4D enclosure rating provides ingress protection against splashing water and dust\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282766583,"sku":"99411175","price":775.55,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-alpha2-25-60-cast-iron-autoadapt-circulator-pump-180mm-with-composite-impeller.png?v=1785223234"},{"product_id":"calpeda-nc3-25-60-130-cast-iron-three-speed-circulator-pump-for-domestic-civil-heating-systems","title":"Calpeda NC3 25-60\/130 Cast Iron Three-Speed Circulator Pump for Domestic \u0026 Civil Heating Systems","description":"\u003cp\u003eThis three-speed in-line circulator is intended for domestic and civil heating systems handling clean liquids without abrasives. It is supplied with 25 mm connections and a compact 130 mm connection length.\u003c\/p\u003e\n\u003cp\u003ePowered by a 240V single-phase induction motor, the unit delivers a maximum flow rate of 58 L\/Min and a peak head of 6 meters. The motor utilizes a 93W input power rating and offers three adjustable speed settings to accommodate varying system demands.\u003c\/p\u003e\n\u003cp\u003eThe hydraulic design features a manual selector that allows users to choose the most suitable operating curve for the installation. The in-line configuration places the suction and delivery connections on the same axis with identical diameters.\u003c\/p\u003e\n\u003cp\u003eConstructed with a robust cast iron pump casing and a composite impeller, the assembly includes a stainless steel AISI 420 shaft for enhanced durability. The motor is protected to IP44 standards with Class H insulation, supporting safe operation with liquid temperatures up to 110°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThree-speed manual selector for choice of the most suitable operating curve\u003c\/li\u003e\n\u003cli\u003eIn-line pump casing with suction and delivery on the same axis\u003c\/li\u003e\n\u003cli\u003eComposite impeller for clean liquid circulation in heating applications\u003c\/li\u003e\n\u003cli\u003eStainless steel AISI 420 shaft with ceramic bearings\u003c\/li\u003e\n\u003cli\u003e2-pole induction motor with three adjustable speed settings\u003c\/li\u003e\n\u003cli\u003eInsulation class H and IP44 motor protection\u003c\/li\u003e\n\u003cli\u003eThreaded ISO 228 ports for standard pipe connections\u003c\/li\u003e\n\u003cli\u003eIntegrated thermal overload protection for the motor\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50979706667255,"sku":"NC3 25-60\/130-Cast Iron","price":370.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-nc3-25-60-130-cast-iron-three-speed-circulator-pump-for-domestic-civil-heating-systems.png?v=1785237549"},{"product_id":"calpeda-nc3-25-60-180-cast-iron-three-speed-in-line-circulator-pump-for-domestic-civil-heating-systems","title":"Calpeda NC3 25-60\/180 Cast Iron Three-Speed In-Line Circulator Pump for Domestic \u0026 Civil Heating Systems","description":"\u003cp\u003eBuilt for domestic and civil heating systems handling clean liquids without abrasives, this three-speed in-line circulator incorporates 25 mm threaded connections with a 180 mm connection length.\u003c\/p\u003e\n\u003cp\u003eThe motor provides 93W of input power on a 240V single-phase supply, achieving a maximum discharge head of 6 meters. It manages a peak flow capacity of 58 L\/Min, with performance levels managed through three selectable motor speeds.\u003c\/p\u003e\n\u003cp\u003eA 180 mm port-to-port length defines the physical envelope, housing an efficient hydraulic assembly. The in-line configuration places the suction and delivery connections on the same axis with identical G 1 1\/2 threaded ports.\u003c\/p\u003e\n\u003cp\u003eThe mechanical build utilizes a cast iron casing and a ceramic-bearing supported AISI 420 stainless steel shaft. Protection is provided by an IP44-rated enclosure, while the internal windings are shielded by high-temperature Class H insulation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThree-speed manual selector for choice of the most suitable operating curve\u003c\/li\u003e\n\u003cli\u003eIn-line pump casing with suction and delivery on the same axis\u003c\/li\u003e\n\u003cli\u003eComposite impeller for clean liquid circulation in heating applications\u003c\/li\u003e\n\u003cli\u003eStainless steel AISI 420 shaft with ceramic bearings\u003c\/li\u003e\n\u003cli\u003e2-pole induction motor with three adjustable speed settings\u003c\/li\u003e\n\u003cli\u003eInsulation class H and IP44 motor protection\u003c\/li\u003e\n\u003cli\u003eThreaded ISO 228 ports for standard pipe connections\u003c\/li\u003e\n\u003cli\u003eIntegrated thermal overload protection for the motor\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50979706732791,"sku":"NC3 25-60\/180-Cast Iron","price":370.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-nc3-25-60-180-cast-iron-three-speed-in-line-circulator-pump-for-domestic-civil-heating-systems.png?v=1785237551"},{"product_id":"calpeda-nc3-25-80-180-cast-iron-three-speed-high-flow-circulator-pump-for-domestic-civil-heating-systems","title":"Calpeda NC3 25-80\/180 Cast Iron Three-Speed High-Flow Circulator Pump for Domestic \u0026 Civil Heating Systems","description":"\u003cp\u003eFeaturing 25 mm threaded connections and a 180 mm connection length, this three-speed in-line circulator is designed for domestic and civil heating systems handling clean liquids without abrasives.\u003c\/p\u003e\u003cp\u003eThis model generates a maximum flow of 158 L\/Min and a peak head of 7.4 meters while drawing 182W input power. The three-speed motor operates on a standard 240V single-phase supply to provide flexible performance across various operating curves.\u003c\/p\u003e\u003cp\u003eThe hydraulic configuration utilizes a composite impeller and a high-strength ceramic shaft to maintain flow stability at higher pressures. Sound pressure ?43 dB(A).\u003c\/p\u003e\u003cp\u003eConstruction features include a heavy-duty cast iron pump body and a 180 mm port-to-port length for integrated system compatibility. The motor is engineered for durability with Class H insulation and is rated for liquid temperatures ranging from -10°C to +110°C.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThree-speed manual selector for choice of the most suitable operating curve\u003c\/li\u003e\n\u003cli\u003eIn-line pump casing with suction and delivery on the same axis\u003c\/li\u003e\n\u003cli\u003eComposite impeller for clean liquid circulation in heating applications\u003c\/li\u003e\n\u003cli\u003eStainless steel AISI 420 shaft with ceramic bearings\u003c\/li\u003e\n\u003cli\u003e2-pole induction motor with three adjustable speed settings\u003c\/li\u003e\n\u003cli\u003eInsulation class H and IP44 motor protection\u003c\/li\u003e\n\u003cli\u003eThreaded ISO 228 ports for standard pipe connections\u003c\/li\u003e\n\u003cli\u003eIntegrated thermal overload protection for the motor\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50979706798327,"sku":"NC3 25-80\/180-Cast Iron","price":710.6,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-nc3-25-80-180-cast-iron-three-speed-high-flow-circulator-pump-for-domestic-civil-heating-systems.png?v=1785237552"},{"product_id":"calpeda-nc3-32-80-180-cast-iron-dn32-three-speed-circulator-pump-for-domestic-civil-heating-systems","title":"Calpeda NC3 32-80\/180 Cast Iron DN32 Three-Speed Circulator Pump for Domestic \u0026 Civil Heating Systems","description":"\u003cp\u003eEquipped with DN32 threaded connections and a 180 mm connection length, this three-speed in-line circulator is intended for domestic and civil heating systems handling clean liquids without abrasives.\u003c\/p\u003e\n\u003cp\u003eOperating with a maximum head of 7.4 meters and a flow rate of 150 L\/Min, the unit utilizes 245W of input power. The single-phase 240V motor allows for three-speed manual adjustment to match the specific resistance of the connected pipework.\u003c\/p\u003e\n\u003cp\u003eThe unit features 32 mm DN ports arranged in an in-line configuration to ensure balanced hydraulic performance across the suction and delivery axis. This design supports a maximum permissible working pressure of 10 bar within the system.\u003c\/p\u003e\n\u003cp\u003eMaterials include a cast iron pump casing and a composite impeller paired with a stainless steel AISI 420 shaft for long-term reliability. The motor is protected by an IP44 enclosure and utilizes Class H insulation for safety at high operating temperatures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThree-speed manual selector for choice of the most suitable operating curve\u003c\/li\u003e\n\u003cli\u003eIn-line pump casing with suction and delivery on the same axis\u003c\/li\u003e\n\u003cli\u003eComposite impeller for clean liquid circulation in heating applications\u003c\/li\u003e\n\u003cli\u003eStainless steel AISI 420 shaft with ceramic bearings\u003c\/li\u003e\n\u003cli\u003e2-pole induction motor with three adjustable speed settings\u003c\/li\u003e\n\u003cli\u003eInsulation class H and IP44 motor protection\u003c\/li\u003e\n\u003cli\u003eThreaded ISO 228 ports for standard pipe connections\u003c\/li\u003e\n\u003cli\u003eIntegrated thermal overload protection for the motor\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50979707027703,"sku":"NC3 32-80\/180-Cast Iron","price":932.85,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-nc3-32-80-180-cast-iron-dn32-three-speed-circulator-pump-for-domestic-civil-heating-systems.png?v=1785237554"},{"product_id":"calpeda-nc3-32-120-180-cast-iron-high-head-three-speed-circulator-pump-for-domestic-civil-heating-systems","title":"Calpeda NC3 32-120\/180 Cast Iron High-Head Three-Speed Circulator Pump for Domestic \u0026 Civil Heating Systems","description":"\u003cp\u003eIncorporating DN32 threaded connections with a 180 mm connection length, this three-speed in-line circulator is designed for domestic and civil heating systems handling clean liquids without abrasives.\u003c\/p\u003e\u003cp\u003eThe motor provides 270W of input power, enabling a maximum discharge head of 11.3 meters and a peak flow rate of 108 L\/Min. Users can manually select between three adjustable speeds to fine-tune the output based on real-time system requirements.\u003c\/p\u003e\u003cp\u003eThe hydraulic design emphasizes high-pressure stability, utilizing a composite impeller specifically shaped to maximize head production. The 180 mm port-to-port length and G 2 threaded connections provide a robust interface for high-volume circulation.\u003c\/p\u003e\u003cp\u003eThe unit's construction consists of a cast iron pump body and a high-grade stainless steel shaft for maximum mechanical endurance. It is rated for liquid temperatures up to 110°C and maintains low noise levels for indoor installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThree-speed manual selector for choice of the most suitable operating curve\u003c\/li\u003e\n\u003cli\u003eIn-line pump casing with suction and delivery on the same axis\u003c\/li\u003e\n\u003cli\u003eComposite impeller for clean liquid circulation in heating applications\u003c\/li\u003e\n\u003cli\u003eStainless steel AISI 420 shaft with ceramic bearings\u003c\/li\u003e\n\u003cli\u003e2-pole induction motor with three adjustable speed settings\u003c\/li\u003e\n\u003cli\u003eInsulation class H and IP44 motor protection\u003c\/li\u003e\n\u003cli\u003eThreaded ISO 228 ports for standard pipe connections\u003c\/li\u003e\n\u003cli\u003eIntegrated thermal overload protection for the motor\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50979707093239,"sku":"NC3 32-120\/180-Cast Iron","price":1183.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-nc3-32-120-180-cast-iron-high-head-three-speed-circulator-pump-for-domestic-civil-heating-systems.png?v=1785237555"},{"product_id":"calpeda-nce-ei-25-60-180-cast-iron-variable-speed-circulator-pump-for-floor-domestic-heating-systems","title":"Calpeda NCE EI 25-60\/180 Cast Iron Variable-Speed Circulator Pump for Floor \u0026 Domestic Heating Systems","description":"\u003cp\u003eDesigned for small domestic heating and floor heating systems, this energy-saving circulator uses a permanent magnet synchronous motor with an on-board inverter for variable speed operation.\u003c\/p\u003e\n\u003cp\u003eEquipped with a permanent magnet synchronous motor, the unit draws only 44W to achieve a 5-meter head. It delivers a maximum flow of 50 L\/Min. Variable speed operation. Energy Efficiency Index (EEI).\u003c\/p\u003e\n\u003cp\u003eThe inverter control allows for proportional pressure, constant pressure, and manual programming modes to maximize energy efficiency. A patented self-cleaning square chamber design is utilized to prevent rotor blockage. Automatic venting and unblocking routines.\u003c\/p\u003e\n\u003cp\u003eThe mechanical assembly features a cast iron casing with a cataphoresis coating and a ceramic shaft for exceptional longevity. The IP44-rated motor includes automatic rotor release and thermal protection for reliable operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePermanent magnet synchronous motor with on-board inverter for variable speed operation\u003c\/li\u003e\n\u003cli\u003eThree selectable operating modes: proportional curve, constant curve, and manual programming\u003c\/li\u003e\n\u003cli\u003ePatented self-cleaning square chamber design prevents rotor blockage\u003c\/li\u003e\n\u003cli\u003eAutomatic venting and unblocking routines\u003c\/li\u003e\n\u003cli\u003eCast iron GJL 200 EN 1561 pump casing with cataphoresis coating\u003c\/li\u003e\n\u003cli\u003eCeramic shaft with carbon bearings\u003c\/li\u003e\n\u003cli\u003eIP44 protection, Class H insulation, Class II appliance construction\u003c\/li\u003e\n\u003cli\u003eThreaded ISO 228 ports for standard pipe connections\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50979707191543,"sku":"NCE EI 25-60\/180-Cast Iron","price":675.7,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-nce-ei-25-60-180-cast-iron-variable-speed-circulator-pump-for-floor-domestic-heating-systems.png?v=1785237557"},{"product_id":"calpeda-nce-ei-32-60-180-cast-iron-variable-speed-circulator-pump-for-floor-domestic-heating-systems","title":"Calpeda NCE EI 32-60\/180 Cast Iron Variable-Speed Circulator Pump for Floor \u0026 Domestic Heating Systems","description":"\u003cp\u003eIncorporating DN32 threaded connections, this energy-saving variable-speed circulator is designed for domestic heating and floor heating systems and is driven by a permanent magnet synchronous motor with an on-board inverter.\u003c\/p\u003e\n\u003cp\u003eDrawing a maximum of 44W, the synchronous motor produces a peak flow rate of 50 L\/Min and 5 meters of discharge head. The integrated inverter provides variable speed operation. Energy Efficiency Index (EEI).\u003c\/p\u003e\n\u003cp\u003eOperating modes are easily selectable via a control knob, offering proportional or constant curves to suit different hydraulic profiles. A white flashing LED provides a diagnostic warning if plant degassing or air in the system is detected. The patented self-cleaning square chamber design eliminates rotor blockage.\u003c\/p\u003e\n\u003cp\u003eConstruction includes an EN 1561 cast iron pump casing and a ceramic shaft supported by high-grade carbon bearings. The unit is rated for liquid temperatures up to 95°C and features a minimum power draw of just 3W during low-demand periods.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePermanent magnet synchronous motor with on-board inverter for variable speed operation\u003c\/li\u003e\n\u003cli\u003eThree selectable operating modes: proportional curve, constant curve, and manual programming\u003c\/li\u003e\n\u003cli\u003eWhite flashing LED diagnostic indicating plant degassing requirement (air in the system)\u003c\/li\u003e\n\u003cli\u003ePatented self-cleaning square chamber design prevents rotor blockage\u003c\/li\u003e\n\u003cli\u003eAutomatic venting and unblocking routines\u003c\/li\u003e\n\u003cli\u003eCast iron GJL 200 EN 1561 pump casing with cataphoresis coating\u003c\/li\u003e\n\u003cli\u003eCeramic shaft with carbon bearings\u003c\/li\u003e\n\u003cli\u003eIP44 protection, Class H insulation, Class II appliance construction\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Calpeda","offers":[{"title":"Default Title","offer_id":50979707257079,"sku":"NCE EI 32-60\/180-Cast Iron","price":687.25,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/calpeda-nce-ei-32-60-180-cast-iron-variable-speed-circulator-pump-for-floor-domestic-heating-systems.png?v=1785237559"},{"product_id":"davey-sc20-25-cast-iron-3-speed-circulator-pump-for-hvac-systems-with-composite-impeller","title":"Davey SC20-25 Cast Iron 3-Speed Circulator Pump for HVAC Systems with Composite Impeller","description":"\u003cp\u003eFor domestic and commercial closed loop heating or air-conditioning systems, including solar heating circuits, the Davey SC20-25 provides reliable water circulation in residential and light commercial applications. This wet rotor circulator pump is suitable for installations where consistent flow is required in hydronic heating systems, radiator circuits, and solar thermal arrays.\u003c\/p\u003e\u003cp\u003eHydraulic performance is delivered through three manual speed settings: Speed 1 at 950 rpm producing 46 W power consumption, Speed 2 at 1300 rpm with 67 W, and Speed 3 at 1850 rpm drawing 93 W. The pump delivers a maximum head of approximately 5.5 m with a flow rate reaching 61.7 L\/Min. Rated current varies from 0.20 A on the lowest setting to 0.40 A at maximum speed on 240 V single-phase supply.\u003c\/p\u003e\u003cp\u003eThe impeller is manufactured from composite material, while the pump casing is constructed from cast iron. The wet rotor design utilises bearings lubricated by the pumped liquid, with graphite bearings and a ceramic shaft providing reliable operation. Rotating parts in contact with the pumped liquid are made from corrosion resistant materials for maintenance free performance.\u003c\/p\u003e\u003cp\u003eInstallation is facilitated by an in-line pump casing with threaded ports allowing direct mounting on pipe work. Barrel unions with threaded ports simplify servicing. The integrated automatic motor overload protection and sintered bronze filter protecting the rotor chamber from impurities enhance operational security. Maximum liquid temperature range is -10°C to +95°C, with maximum ambient temperature of +40°C.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIn-line pump casing design with threaded ports for direct pipe work mounting\u003c\/li\u003e\n\u003cli\u003eBarrel unions with threaded ports for simplified installation and servicing\u003c\/li\u003e\n\u003cli\u003eThree speed manual selector switch adaptable to suit installation requirements\u003c\/li\u003e\n\u003cli\u003eWet rotor bearings lubricated by pumped liquid providing quiet operation\u003c\/li\u003e\n\u003cli\u003eStainless steel impeller neck ring for extended service life\u003c\/li\u003e\n\u003cli\u003eSintered bronze filter protecting rotor chamber from impurities\u003c\/li\u003e\n\u003cli\u003eIntegrated automatic motor overload protection\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Davey","offers":[{"title":"Default Title","offer_id":50979762634999,"sku":"SC20-25","price":485.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/davey-sc20-25-cast-iron-3-speed-circulator-pump-for-hvac-systems-with-composite-impeller.png?v=1785239188"}],"url":"https:\/\/foundationpumps.com.au\/collections\/cast-iron-circulation-pumps.oembed","provider":"Foundation Pumps","version":"1.0","type":"link"}