{"product_id":"armstrong-572006-300-ast-5-asme-pre-pressurized-expansion-tank","title":"Armstrong 572006-300 AST-5 ASME Pre-Pressurized Expansion Tank","description":"\u003cp\u003eEfficiently manage thermal expansion in hydronic heating and chilled water systems with the \u003cstrong\u003eArmstrong 572006-300 AST-5\u003c\/strong\u003e ASME pre-pressurized expansion tank. This high-quality vessel is engineered to accommodate the fluctuating volume of system fluids as temperatures change, protecting your boiler and components from dangerous pressure spikes and relief valve discharge.\u003c\/p\u003e\u003cp\u003eThe unit features a durable heavy-duty diaphragm that creates a permanent barrier between the system water and the air cushion. By maintaining the required pre-charge pressure, this \u003cstrong\u003eAST-5\u003c\/strong\u003e tank prevents waterlogged conditions, ensuring consistent operation and significantly extending the service life of pumps and heat exchangers within your loop.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME Certified:\u003c\/strong\u003e Designed and manufactured to meet rigorous ASME Boiler and Pressure Vessel Code requirements for safety and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Protection:\u003c\/strong\u003e Absorbs expansion to prevent relief valve weeping and system degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Diaphragm:\u003c\/strong\u003e High-grade materials ensure a long-lasting separation between the air charge and system fluid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance Efficient:\u003c\/strong\u003e Pre-pressurized design reduces the need for frequent site monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial hydronic heating, industrial cooling loops, and high-performance boiler systems requiring code-compliant expansion control.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133338189918,"sku":"572006-300","price":1562.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/572006_300_image_ef01e55c-45cf-40d9-9190-4a9088832bd0.png?v=1786104372","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-572006-300-ast-5-asme-pre-pressurized-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}