{"product_id":"racor-fundicion-bomba-circuladora","title":"Cast-iron union for circulator pumps (1 unit; 2 per pump)","description":"\u003ch2\u003eCast-iron union to connect a threaded circulator pump to the pipework\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ecast-iron union\u003c\/strong\u003e connects one port of a threaded circulator pump to heating or cooling pipework. \u003cstrong\u003eSold individually: each pump needs 2\u003c\/strong\u003e, one per port. Two sizes to match the pump thread: 1½\" × 1\" and 2\" × 1¼\". At Q-Tech we use them when fitting or replacing circulators in \u003cstrong\u003epre-assembled plant rooms\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eSummary\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003cth\u003eType\u003c\/th\u003e\u003ctd\u003eCast-iron union for circulator pumps (1 unit)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eReference\u003c\/th\u003e\u003ctd\u003eSalvador Escoda AC52920 and AC52921\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eUse\u003c\/th\u003e\u003ctd\u003eConnecting threaded circulators in heating and cooling systems\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eSizes\u003c\/th\u003e\u003ctd\u003e1½\" × 1\" and 2\" × 1¼\" (pump thread × pipe thread)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eQuantity per pump\u003c\/th\u003e\u003ctd\u003e2 units\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eQ-Tech installation\u003c\/th\u003e\u003ctd\u003ePump fitted in a pre-assembled plant room or on site by an Expert Technician\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhat is a circulator union?\u003c\/h3\u003e\n\u003cp\u003eThreaded circulators have a large male thread on each port (1½\" or 2\"). The union has a nut that screws onto the pump and a tail that screws onto the pipe, with a flat gasket between them. The pump can then be removed without cutting pipe.\u003c\/p\u003e\n\u003ch3\u003eWhat problem does it solve?\u003c\/h3\u003e\n\u003cp\u003ePumps \u003cstrong\u003edo not come with unions\u003c\/strong\u003e, and the pipework is usually a smaller size than the pump port. The cast-iron union is the economical choice for closed heating and cooling circuits.\u003c\/p\u003e\n\u003ch3\u003eSizes and compatibility\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003cth\u003eSize\u003c\/th\u003e\u003cth\u003ePump thread\u003c\/th\u003e\u003cth\u003ePipe thread\u003c\/th\u003e\u003cth\u003eDAB pumps in our store\u003c\/th\u003e\u003cth\u003eSE reference\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003e1½\" × 1\"\u003c\/th\u003e\u003ctd\u003e1½\"\u003c\/td\u003e\u003ctd\u003e1\"\u003c\/td\u003e\u003ctd\u003eEVOSTA 2, EVOSTA 3 and EVOSTA 2 SOL 130 and 180 mm; EVOPLUS Small 180 mm\u003c\/td\u003e\u003ctd\u003eAC52920\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003e2\" × 1¼\"\u003c\/th\u003e\u003ctd\u003e2\"\u003c\/td\u003e\u003ctd\u003e1¼\"\u003c\/td\u003e\u003ctd\u003eEVOSTA 2, EVOSTA 3 and EVOPLUS Small 180X; ALM 500 and ALP 2000\u003c\/td\u003e\u003ctd\u003eAC52921\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eCompatibility and limits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOrder 2 units per pump.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDo not use it for domestic hot water: for DHW, choose the \u003ca href=\"\/en-en\/products\/brass-union-set-circulator-pump\"\u003ebrass union set\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNot for flanged pumps (EVOPLUS B, KLP, KLM).\u003c\/li\u003e\n\u003cli\u003eThe photo shows 2 units with their gaskets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow many do I need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo per pump, one on each port. The price is per unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it differ from the brass one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe brass one is also suitable for domestic hot water and is sold as a set of 2. The cast-iron one is for heating and cooling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the delivery time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is in stock at our warehouse; if none were left, we would order it urgently and tell you the lead time.\u003c\/p\u003e\n\u003ch3\u003eQ-Tech installation and support\u003c\/h3\u003e\n\u003cp\u003eQ-Tech fits circulators with their unions in our \u003ca href=\"\/en-en\/pages\/pre-montaje-avanzado\"\u003epre-assembled plant room\u003c\/a\u003e, which arrives \u003cstrong\u003etested and ready to connect\u003c\/strong\u003e. To replace a pump in your system, book an \u003ca href=\"\/en-en\/products\/tecnico-experto-in-situ-horas\"\u003eon-site Expert Technician by the hour\u003c\/a\u003e; if you are unsure of the size, request a \u003ca href=\"\/en-en\/products\/expert-technician-remote-technical-call\"\u003etechnical call\u003c\/a\u003e. Pumps in \u003ca href=\"\/en-en\/collections\/dab-circulator-pumps\"\u003eDAB circulator pumps\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp class=\"qt-nota-stock\"\u003e\u003cstrong\u003eAvailability and lead times:\u003c\/strong\u003e this item is in stock at our warehouse. Occasionally, depending on the time of year, the stock update may contain an error. If no units are available when you place your order, we will order it urgently and inform you immediately of the updated delivery time.\u003c\/p\u003e\n","brand":"Salvador Escoda","offers":[{"title":"1½\" × 1\"","offer_id":59094572499288,"sku":"SE-AC52920","price":2.68,"currency_code":"EUR","in_stock":true},{"title":"2\" × 1¼\"","offer_id":59094572532056,"sku":"SE-AC52921","price":5.36,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/4592\/8792\/files\/racor-fundicion-bomba-circuladora.webp?v=1794401942","url":"https:\/\/q-tech.es\/en-en\/products\/cast-iron-union-circulator-pump","provider":"Q-Tech ® ","version":"1.0","type":"link"}