{"product_id":"caleffi-551028ac-discal-air-separator-1-sweat-with-expansion-tank-check-valve-150-psi","title":"Caleffi 551028AC DISCAL Air Separator 1\" Sweat with Expansion Tank Check Valve, 150 psi","description":"\u003cp\u003eThe Caleffi 551028AC is a 1\" DISCAL Air Separator with sweat (copper) connections and an expansion tank check valve. It continuously removes air and microbubbles from closed-loop hydronic systems.\u003c\/p\u003e\u003cp\u003eDISCAL separators work on the coalescing principle: an internal element causes entrained air and microbubbles to combine and rise into the upper chamber, where a float-operated automatic air vent releases them. Removing air reduces noise, corrosion and pump cavitation and improves heat transfer in closed-loop hydronic heating and cooling systems. This version includes a service check valve on the expansion tank connection, so the tank can be serviced or replaced without draining the system.\u003c\/p\u003e\u003cp\u003eBefore ordering, confirm the 1\" sweat (copper) connection matches your main piping, and that the system stays within 150 psi and 250F. Install it on the supply side where water temperature is highest for best air removal.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Caleffi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 551028AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DISCAL (551 Series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Air Separator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e sweat (copper)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e 250F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Pressure:\u003c\/strong\u003e 150 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Service check valve for expansion tank connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 8016615963281\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Air Separators\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDocuments\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/res.cloudinary.com\/dzhpkjoqj\/Caleffi\/551028AC_CALE-551028AC_8016615963281_TechB.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTechnical Data Sheet\u003c\/a\u003e (PDF)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/res.cloudinary.com\/dzhpkjoqj\/Caleffi\/551028AC_CALE-551028AC_8016615963281_Inst.pdf\" target=\"_blank\" rel=\"noopener\"\u003eInstallation \u0026amp; Operation Manual\u003c\/a\u003e (PDF)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/res.cloudinary.com\/dzhpkjoqj\/Caleffi\/551028AC_CALE-551028AC_8016615963281_Sub.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSubmittal Sheet\u003c\/a\u003e (PDF)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/res.cloudinary.com\/dzhpkjoqj\/Caleffi\/551028AC_CALE-551028AC_8016615963281_Sell.pdf\" target=\"_blank\" rel=\"noopener\"\u003eProduct Brochure\u003c\/a\u003e (PDF)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSee also: \u003ca href=\"\/collections\/air-separators\"\u003eair separators\u003c\/a\u003e, \u003ca href=\"\/collections\/caleffi-north-america\"\u003eall Caleffi products\u003c\/a\u003e.\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":50517448917095,"sku":"CALE-551028AC","price":188.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/2253\/3479\/files\/551028AC_CALE-551028AC_8016615963281.jpg?v=1792424496","url":"https:\/\/www.thehousesupplier.com\/products\/caleffi-551028ac-discal-air-separator-1-sweat-with-expansion-tank-check-valve-150-psi","provider":"The House Supplier","version":"1.0","type":"link"}