{"product_id":"armstrong-572006-301-ast-12-asme-pre-pressurized-expansion-tank","title":"Armstrong 572006-301 AST-12 ASME Pre-Pressurized Expansion Tank","description":"\u003cp\u003eEfficiently manage thermal expansion in your hydronic heating or chilled water system with the \u003cb\u003eArmstrong 572006-301\u003c\/b\u003e, also known as the \u003cb\u003eAST-12\u003c\/b\u003e ASME pre-pressurized expansion tank. This high-quality vessel is engineered to absorb the increase in water volume that occurs as system temperatures fluctuate, effectively preventing pressure spikes and protecting system components from premature wear or failure.\u003c\/p\u003e\u003cp\u003eThe tank utilizes a heavy-duty, field-replaceable bladder that acts as a secure barrier between the system water and the air cushion. This pre-pressurized design ensures that the water remains isolated, minimizing oxygen ingress and maintaining the integrity of your hydronic system while reducing the frequency of pressure relief valve discharges.\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 rigorous ASME Section VIII pressure vessel standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBladder Material:\u003c\/b\u003e High-grade, flexible heavy-duty rubber designed for longevity and chemical compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSystem Protection:\u003c\/b\u003e Effectively mitigates destructive pressure surges in closed-loop systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePressure Maintenance:\u003c\/b\u003e Pre-charged internal air cushion provides consistent regulation during expansion and contraction cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial and industrial hydronic heating systems, large-scale chilled water loops, and heavy-duty HVAC infrastructures requiring ASME-rated pressure containment.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133339893854,"sku":"572006-301","price":2463.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/572006_301_image_3543c4d5-82bb-4e19-8bac-1a3d7683d48f.png?v=1786104408","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-572006-301-ast-12-asme-pre-pressurized-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}