{"product_id":"hoffman-401437-model-75h-non-vacuum-air-valve","title":"Hoffman 401437 Model 75H Non-Vacuum Air Valve","description":"\u003cp\u003eMaintain optimal hydronic system efficiency by effectively removing trapped air from your heating installation with the \u003cstrong\u003eHoffman 401437 Model 75H\u003c\/strong\u003e air valve. This non-vacuum venting device is engineered to provide consistent and reliable operation in diverse hot water heating applications, ensuring your system runs quietly and effectively without the risk of air binding.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003e401437\u003c\/strong\u003e utilizes a precise float-operated mechanism that automatically vents air from radiators and piping systems while the system is under pressure. As air collects in the valve chamber, the internal float drops, opening the vent port to release the air, then reseals once water rises to the vent port, preventing leakage while maintaining a closed-loop environment.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Venting:\u003c\/strong\u003e Ensures continuous removal of accumulated air during operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Construction:\u003c\/strong\u003e Built to Hoffman standards for long-lasting performance in hydronic circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Operation:\u003c\/strong\u003e Designed specifically for non-vacuum applications to maintain system pressure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Primarily used in residential and commercial hot water heating systems, baseboard radiators, and convectors to prevent noise and ensure efficient heat transfer.\u003c\/p\u003e","brand":"Hoffman","offers":[{"title":"Default Title","offer_id":43128736579678,"sku":"401437","price":173.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/401437_image_b61a654f-1ece-45d0-ae9a-5ff3bbc84f82.png?v=1786069263","url":"https:\/\/nationalboilersupply.com\/products\/hoffman-401437-model-75h-non-vacuum-air-valve","provider":"National Boiler Supply","version":"1.0","type":"link"}