{"product_id":"hoffman-401416-model-4-quick-vent-air-valve","title":"Hoffman 401416 Model 4 Quick Vent Air Valve","description":"\u003cp\u003eMaintain optimal steam system efficiency by ensuring rapid air removal with the \u003cstrong\u003eHoffman 401416\u003c\/strong\u003e Model 4 Quick Vent. This precision-engineered valve is designed to vent air quickly and quietly from steam mains, radiators, and convectors, preventing cold spots and ensuring consistent heat distribution throughout your building.\u003c\/p\u003e\u003cp\u003eThe unit functions by utilizing a heat-sensitive bellows that closes the valve immediately upon contact with steam. This automatic mechanism effectively balances system pressure and prevents air-binding, which is critical for the longevity and performance of your hydronic or steam boiler setup.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Venting:\u003c\/strong\u003e Engineered for quick air release during the heating cycle to minimize lag time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBellows Precision:\u003c\/strong\u003e High-sensitivity thermostatic element ensures positive closure when steam reaches the vent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e Built to withstand the rigors of commercial and residential steam heating environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for steam heating systems requiring reliable air elimination, including one-pipe steam heating mains, supply headers, and large radiators where efficient air discharge is essential for system balance.\u003c\/p\u003e","brand":"Hoffman","offers":[{"title":"Default Title","offer_id":43128720982110,"sku":"401416","price":108.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/401416_image_027eff51-9d8b-4109-b7d8-6968cad0ae46.png?v=1786069041","url":"https:\/\/nationalboilersupply.com\/products\/hoffman-401416-model-4-quick-vent-air-valve","provider":"National Boiler Supply","version":"1.0","type":"link"}