{"product_id":"hoffman-401434-model-75-non-vacuum-air-valve","title":"Hoffman 401434 Model 75 Non-Vacuum Air Valve","description":"\u003cp\u003eMaintaining optimal hydronic system efficiency requires reliable air removal, and the \u003cstrong\u003e401434\u003c\/strong\u003e Hoffman \u003cstrong\u003eModel 75\u003c\/strong\u003e non-vacuum air valve is engineered specifically for this purpose. This component is essential for steam heating systems where air must be vented quickly and consistently to allow steam to distribute evenly throughout your piping network, preventing cold spots and ensuring balanced comfort.\u003c\/p\u003e\u003cp\u003eThis valve utilizes a precision-engineered internal float mechanism that remains open to exhaust air while the system is cool and automatically closes upon contact with steam. Once the system reaches operating temperature, the internal thermostatic element seals the vent, preventing steam loss and maintaining system pressure for maximum energy efficiency.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Venting:\u003c\/strong\u003e High-capacity design ensures quick air discharge during system startup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficiency:\u003c\/strong\u003e Reliable shut-off mechanism prevents costly steam leakage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built to withstand the rigors of frequent temperature cycling in steam environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Primarily designed for one-pipe steam heating systems, residential radiator venting, and main line air venting in low-pressure steam applications.\u003c\/p\u003e","brand":"Hoffman","offers":[{"title":"Default Title","offer_id":43128732516446,"sku":"401434","price":194.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/401434_image_3e4d4a87-23e1-4c12-a6c2-b42b8cc1f796.png?v=1786069222","url":"https:\/\/nationalboilersupply.com\/products\/hoffman-401434-model-75-non-vacuum-air-valve","provider":"National Boiler Supply","version":"1.0","type":"link"}