{"product_id":"caleffi-502243a-valcal-high-capacity-automatic-air-vent-1-2-npt-male-with-hygroscopic-cap","title":"Caleffi 502243A VALCAL High-Capacity Automatic Air Vent 1\/2\" NPT Male with Hygroscopic Cap","description":"\u003cp\u003eThe Caleffi 502243A VALCAL is a high-capacity, float-type automatic air vent with a 1\/2\" male NPT connection and a hygroscopic safety cap.\u003c\/p\u003e\u003cp\u003eIt releases air collected at high points of hydronic heating and cooling systems. The hygroscopic cap swells when it absorbs water and seals the vent, helping prevent leaks if the float valve weeps. The brass body is rated for 150 psi working pressure, 60 psi maximum venting pressure, and 250°F.\u003c\/p\u003e\u003cp\u003eBefore ordering, confirm you need a 1\/2\" male NPT connection and a straight body pattern. Install the vent upright at a high point of the system.\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 502243A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e VALCAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Float-Type Automatic Air Vent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Male NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Pattern:\u003c\/strong\u003e Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCap:\u003c\/strong\u003e Hygroscopic safety cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Hydronic (water)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Working Pressure:\u003c\/strong\u003e 150 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Venting Pressure:\u003c\/strong\u003e 60 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e 250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 8016615083170\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Air Vents\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\/502243A_CALE-502243A_8016615083170_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\/502243A_CALE-502243A_8016615083170_Inst.pdf\" target=\"_blank\" rel=\"noopener\"\u003eInstallation \u0026amp; Operation Manual\u003c\/a\u003e (PDF)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSee also: \u003ca href=\"\/collections\/air-vents\"\u003eair vents\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":50517447376999,"sku":"CALE-502243A","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/2253\/3479\/files\/502243A.jpg?v=1792425058","url":"https:\/\/www.thehousesupplier.com\/products\/caleffi-502243a-valcal-high-capacity-automatic-air-vent-1-2-npt-male-with-hygroscopic-cap","provider":"The House Supplier","version":"1.0","type":"link"}