{"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\/products\/davey-sc20-25-cast-iron-3-speed-circulator-pump-for-hvac-systems-with-composite-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}