{"product_id":"caleffi-z54-z-one-2-way-zone-valve-normally-closed-terminal-block-with-end-switch-1-2-sweat-2-5-cv-24v","title":"Caleffi Z54 Z-One 2-Way Zone Valve, Normally Closed, Terminal Block with End Switch, 1\/2\" Sweat, 2.5 Cv, 24V","description":"\u003cp\u003eThe Caleffi Z54 is a Z-One 2-way motorized zone valve with a normally closed 24V actuator with screw terminal block and auxiliary end switch, assembled on a 1\/2\" sweat valve body.\u003c\/p\u003e\u003cp\u003eZ-One zone valves open and close individual zones in hydronic heating systems on a call from a 24V thermostat or zone control. The end switch closes when the valve opens, so it can be used to enable the boiler or zone circulator. Field wiring lands on a screw terminal block on the actuator. This model is rated for a 2.5 Cv flow capacity, a 50 psi maximum close-off pressure and a maximum fluid temperature of 240°F.\u003c\/p\u003e\u003cp\u003eBefore ordering: confirm that the 1\/2\" sweat connection matches your piping, that the control circuit is 24V, and that the zone valve is meant to stay closed without power (normally closed). The pump differential across the closed valve should not exceed 50 psi.\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 Z54\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Z-One\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 2-Way Zone Valve, Normally Closed\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 Sweat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Capacity (Cv):\u003c\/strong\u003e 2.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Close-Off Pressure:\u003c\/strong\u003e 50 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e 240°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Switch:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Screw terminal block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 8016615964905\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e 2-Way Zone Valve\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\/Z54_CALE-Z54_8016615964905_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\/Z54_CALE-Z54_8016615964905_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\/Z54_CALE-Z54_8016615964905_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\/Z54_CALE-Z54_8016615964905_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\/2-way-zone-valve\"\u003e2-way zone valve\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":50517456617575,"sku":"CALE-Z54","price":175.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/2253\/3479\/files\/Z54_CALE-Z54_8016615964905.jpg?v=1792424731","url":"https:\/\/www.thehousesupplier.com\/products\/caleffi-z54-z-one-2-way-zone-valve-normally-closed-terminal-block-with-end-switch-1-2-sweat-2-5-cv-24v","provider":"The House Supplier","version":"1.0","type":"link"}