{"product_id":"bell-gossett-1bn358lf-pta-447-potable-water-expansion-tank","title":"Bell \u0026 Gossett 1BN358LF PTA-447 Potable Water Expansion Tank","description":"\u003cp\u003eEfficiently manage thermal expansion in domestic water systems with the Bell \u0026amp; Gossett \u003cb\u003ePTA-447\u003c\/b\u003e expansion tank, part number \u003cb\u003e1BN358LF\u003c\/b\u003e. Engineered for commercial and residential applications, this robust vessel absorbs the forces of expanding water as temperatures rise, effectively preventing hazardous pressure build-ups that can compromise system integrity.\u003c\/p\u003e\u003cp\u003eThis diaphragm-style tank features an FDA-approved polypropylene liner and a heavy-duty butyl diaphragm. This design ensures that potable water is completely isolated from the steel shell, maintaining water quality while providing a reliable barrier against pressure fluctuations in the plumbing network.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eASME Construction:\u003c\/b\u003e Engineered to meet stringent pressure vessel standards for maximum safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eContamination Shield:\u003c\/b\u003e Butyl diaphragm and polypropylene liner prevent contact between water and steel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSystem Protection:\u003c\/b\u003e Effectively absorbs expansion forces to extend the lifespan of system components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for protecting domestic hot water heaters, high-rise building plumbing systems, and commercial water supply lines where thermal expansion must be regulated to prevent relief valve discharge.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43127893688414,"sku":"1BN358LF","price":7058.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/1BN358LF_image_d5810541-8d24-455b-a2ca-821f44bc50c2.png?v=1786058826","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-1bn358lf-pta-447-potable-water-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}