{"product_id":"bell-gossett-116302-series-d-80-asme-expansion-tank","title":"Bell \u0026 Gossett 116302 Series D-80 ASME Expansion Tank","description":"\u003cp\u003eEfficiently manage thermal expansion and maintain consistent system pressure in hydronic installations with the \u003cstrong\u003eBell \u0026amp; Gossett 116302 Series D-80\u003c\/strong\u003e. This ASME-rated pressure vessel is engineered to reliably absorb expansion forces, preventing fluctuations that can lead to air binding, pressure relief valve discharge, or component damage in closed-loop systems.\u003c\/p\u003e\u003cp\u003eThe unit features a rugged diaphragm-type design that serves as a permanent barrier between the system water and the air cushion. This pre-charged mechanism effectively accommodates fluctuating water volumes caused by temperature changes, ensuring that the system remains at the desired operating pressure throughout the full duty cycle.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME Certified:\u003c\/strong\u003e Manufactured to strict Section VIII standards for pressure vessel safety and reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiaphragm Design:\u003c\/strong\u003e Utilizes a flexible, high-grade barrier to isolate the expansion water from the air pre-charge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Protection:\u003c\/strong\u003e Minimizes mechanical wear by absorbing thermal shock and stabilizing pressure spikes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial and industrial hydronic heating systems, chilled water cooling loops, and radiant heating infrastructure requiring high-performance pressure regulation.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43124017954910,"sku":"116302","price":3397.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/116302_image_2471e07c-6acb-4edc-a70f-d3bbcc699c96.png?v=1786028730","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-116302-series-d-80-asme-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}