{"product_id":"bell-gossett-1bn320lf-pt-30v-potable-water-expansion-tank","title":"Bell \u0026 Gossett 1BN320LF PT-30V Potable Water Expansion Tank","description":"\u003cp\u003eMaintain system integrity and prevent pressure fluctuations in potable water systems with the \u003cstrong\u003eBell \u0026amp; Gossett 1BN320LF\u003c\/strong\u003e, also known as the \u003cstrong\u003ePT-30V\u003c\/strong\u003e. This reliable expansion tank is engineered to absorb excess water volume created by thermal expansion during the heating cycle, effectively mitigating pressure spikes that can stress pipes, valves, and water heater components.\u003c\/p\u003e\u003cp\u003eThe unit features a pre-pressurized air chamber separated from the potable water supply by a durable, FDA-approved butyl diaphragm. When the water temperature rises and volume expands, the water pushes against the diaphragm, compressing the air cushion to absorb the increase and prevent the relief valve from discharging water unnecessarily.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Expansion Control:\u003c\/strong\u003e Effectively stabilizes system pressure during heating cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiaphragm Reliability:\u003c\/strong\u003e Heavy-duty, FDA-approved construction ensures long-term potable water safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Resistance:\u003c\/strong\u003e Engineered with premium materials to resist internal and external rust.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for residential and light commercial potable water applications, including tank-type water heaters, boiler feed systems, and closed-loop domestic hot water supplies.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43127827726430,"sku":"1BN320LF","price":405.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/1BN320LF_image_a1fe1e97-dfe6-4f79-ac92-e6c6dc78e625.jpg?v=1786058012","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-1bn320lf-pt-30v-potable-water-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}