{"product_id":"bell-gossett-1bn360lf-pta-449-asme-expansion-tank","title":"Bell \u0026 Gossett 1BN360LF PTA-449 ASME Expansion Tank","description":"\u003cp\u003eMaintain system integrity and prevent thermal expansion damage with the \u003cstrong\u003eBell \u0026amp; Gossett 1BN360LF\u003c\/strong\u003e, a robust ASME-rated expansion tank designed for precision domestic water applications. Known in the field as model \u003cstrong\u003ePTA-449\u003c\/strong\u003e, this vessel is engineered to reliably absorb volumetric changes in heated water, effectively stabilizing system pressure and extending the lifespan of your plumbing infrastructure.\u003c\/p\u003e\u003cp\u003eThe tank utilizes a sophisticated internal design featuring a high-quality FDA-approved polypropylene liner paired with a heavy-duty butyl diaphragm. This mechanism creates a complete physical barrier between the system water and the steel shell, ensuring that the water remains isolated from metallic contact to prevent contamination while maintaining consistent pressure regulation.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Management:\u003c\/strong\u003e ASME-constructed vessel designed to handle significant expansion forces safely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Purity:\u003c\/strong\u003e FDA-approved polypropylene liner ensures clean water isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Barrier:\u003c\/strong\u003e Heavy-duty butyl diaphragm separates system fluid from the durable steel shell.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial and residential domestic water systems, hydronic heating loops requiring potable compatibility, and thermal expansion control in tankless or storage water heater setups.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43127899717726,"sku":"1BN360LF","price":10163.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/1BN360LF_image_5386a5e4-201d-46cd-acc6-deaedaa7c82b.png?v=1786058927","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-1bn360lf-pta-449-asme-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}