{"product_id":"hoffman-401461-model-45-non-vacuum-air-valve","title":"Hoffman 401461 Model 45 Non-Vacuum Air Valve","description":"\u003cp\u003eEfficiently manage air discharge in your hydronic heating system with the high-performance \u003cstrong\u003eHoffman 401461 Model 45\u003c\/strong\u003e air valve. Designed to automatically release trapped air from steam radiators, this non-vacuum component prevents air binding and ensures consistent heat distribution throughout your property.\u003c\/p\u003e\u003cp\u003eThe internal float mechanism reacts precisely to changing pressure and temperature conditions, closing tightly against steam to prevent leakage while allowing air to escape during the startup cycle. Its robust construction ensures long-term operational reliability in demanding residential and light commercial steam environments.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Venting:\u003c\/strong\u003e Rapidly purges air from steam mains and radiation units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Sensitivity:\u003c\/strong\u003e Engineered for precise closure as system steam levels rise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Housing:\u003c\/strong\u003e Manufactured from corrosion-resistant materials for extended service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Vacuum Design:\u003c\/strong\u003e Optimized specifically for single-pipe steam heating applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for residential steam radiators, terminal heating units, and light commercial low-pressure steam piping systems requiring reliable, maintenance-free air removal.\u003c\/p\u003e","brand":"Hoffman","offers":[{"title":"Default Title","offer_id":43128754012254,"sku":"401461","price":64.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/401461_image_a760546d-37cb-44a9-86ec-5e01dab191c2.png?v=1786069510","url":"https:\/\/nationalboilersupply.com\/products\/hoffman-401461-model-45-non-vacuum-air-valve","provider":"National Boiler Supply","version":"1.0","type":"link"}