{"product_id":"bell-gossett-1bn357lf-pta-210v-diaphragm-expansion-tank","title":"Bell \u0026 Gossett 1BN357LF PTA-210V Diaphragm Expansion Tank","description":"\u003cp\u003eEfficiently manage thermal expansion and safeguard your domestic water system from damaging pressure fluctuations with the \u003cstrong\u003e1BN357LF\u003c\/strong\u003e Bell \u0026amp; Gossett \u003cstrong\u003ePTA-210V\u003c\/strong\u003e expansion tank. Designed for demanding applications, this ASME-rated vessel ensures system integrity by providing a reliable space for water to expand as temperatures rise, effectively preventing relief valve discharge and component stress.\u003c\/p\u003e\u003cp\u003eThis unit features a heavy-duty steel shell housing a sophisticated diaphragm design. Inside, a food-grade, FDA-approved polypropylene liner and a high-performance butyl diaphragm work in tandem to completely isolate the water from the metallic shell, preventing internal corrosion and maintaining water quality throughout the system's service life.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME Certified:\u003c\/strong\u003e Engineered to meet rigorous ASME pressure vessel construction standards for safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Isolation:\u003c\/strong\u003e Utilizes a butyl diaphragm to prevent contact between potable water and the steel shell.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Resistance:\u003c\/strong\u003e Includes an FDA-approved polypropylene liner for long-term durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Management:\u003c\/strong\u003e Designed to absorb expanding fluid to maintain optimal system equilibrium.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial domestic water heating systems, high-capacity plumbing circuits, and installations requiring ASME-compliant pressure protection for potable water supplies.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43127889789022,"sku":"1BN357LF","price":5207.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/1BN357LF_image_c787fc87-fc3f-4608-96d1-3c84432d3b29.png?v=1786058775","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-1bn357lf-pta-210v-diaphragm-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}