{"product_id":"bell-gossett-116298-series-d-15-expansion-tank","title":"Bell \u0026 Gossett 116298 Series D-15 Expansion Tank","description":"\u003cp\u003eThis high-performance expansion tank is engineered to effectively absorb the expansion forces of heating and cooling system water, ensuring your hydronic circuit maintains consistent pressure under varying operating loads. The \u003cstrong\u003e116298\u003c\/strong\u003e Bell \u0026amp; Gossett \u003cstrong\u003eSeries D-15\u003c\/strong\u003e expansion tank is designed as a heavy-duty, pre-charged diaphragm-type pressure vessel, providing a reliable buffer to prevent relief valve discharge and component wear.\u003c\/p\u003e\u003cp\u003eInside the tank, a flexible heavy-duty diaphragm separates the system fluid from a pre-charged air cushion. As the water in your hydronic system heats up and expands, it pushes against the diaphragm, compressing the air in the sealed chamber. This precise mechanism compensates for volume changes caused by thermal fluctuation, protecting your system's piping, pumps, and boilers from excessive stress.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME Rated Safety:\u003c\/strong\u003e Constructed to rigorous standards for pressure vessel integrity and reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiaphragm Separation:\u003c\/strong\u003e Utilizes a high-grade flexible barrier to prevent waterlogging and reduce tank corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Stabilization:\u003c\/strong\u003e Effectively maintains optimal system operating pressure during thermal expansion cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial and industrial closed-loop hydronic heating systems, chilled water circuits, and large-scale thermal management installations requiring dependable volumetric expansion control.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43124013203550,"sku":"116298","price":1451.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/116298_image_ebffa9fd-cd44-4a96-b40c-6bb3bc933485.png?v=1786028491","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-116298-series-d-15-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}