{"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","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-ups-25-80-cast-iron-three-speed-circulator-pump-for-hydronic-heating","provider":"Foundation Pumps","version":"1.0","type":"link"}