{"product_id":"bell-gossett-113021-model-87-automatic-air-vent","title":"Bell \u0026 Gossett 113021 Model 87 Automatic Air Vent","description":"\u003cp\u003eEffective air removal is critical for maintaining peak hydronic heating performance and preventing system noise, and the \u003cstrong\u003e113021 Model 87\u003c\/strong\u003e Automatic Air Vent from Bell \u0026amp; Gossett provides a dependable solution for these needs. Designed for seamless integration into hot water heating systems, this automatic vent efficiently purges trapped air to ensure consistent circulation throughout your piping and radiators.\u003c\/p\u003e\u003cp\u003eThe unit utilizes a precision-engineered internal float mechanism that rises as air is collected, opening the valve to release trapped gases while sealing tightly against water to prevent leakage. Once the air is expelled, the water level within the chamber causes the float to lift and close the vent, maintaining a closed-loop system integrity that prevents oxygen ingress and subsequent internal corrosion.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Operation:\u003c\/strong\u003e Self-actuating venting process that reduces the need for manual system bleeding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Resistance:\u003c\/strong\u003e Durable body construction designed to withstand the rigors of hydronic heating environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Profile:\u003c\/strong\u003e Space-saving design that allows for easy installation in tight mechanical rooms or near boiler piping.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for use in residential hot water heating loops, commercial hydronic systems, and high-point air collection locations where trapped air threatens flow efficiency and component longevity.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43123956842590,"sku":"113021","price":121.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/113021_image_dfe9bfc7-f39e-4338-9855-97577ba3d1e4.png?v=1786025984","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-113021-model-87-automatic-air-vent","provider":"National Boiler Supply","version":"1.0","type":"link"}