{"product_id":"armstrong-573100-009-a500-l-expansion-tank","title":"Armstrong 573100-009 A500-L Expansion Tank","description":"\u003cp\u003eReliable pressure management is essential for the longevity and efficiency of your hydronic system, and the \u003cstrong\u003eArmstrong 573100-009\u003c\/strong\u003e A500-L expansion tank provides the critical control required for residential and commercial setups. Designed to accommodate the expansion of water as it heats, this \u003cstrong\u003eA500-L\u003c\/strong\u003e model effectively prevents excessive pressure buildup that can stress components, seals, and piping, ensuring your system operates within safe design parameters.\u003c\/p\u003e\u003cp\u003eThis tank utilizes a pressurized air cushion separated from the system water by a flexible diaphragm. As the temperature rises and the water volume increases, the diaphragm pushes against the air chamber, compressing the air and absorbing the additional volume. This maintains a stable system pressure throughout the heating cycle, preventing frequent relief valve discharge and system water loss.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Regulation:\u003c\/strong\u003e Maintains consistent system pressure during thermal cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Protection:\u003c\/strong\u003e Reduces wear on circulators and seals by managing expansion loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliability:\u003c\/strong\u003e Engineered for durability in high-demand hydronic environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for closed-loop hydronic heating systems, radiant floor heating, and baseboard circulation networks requiring stable expansion management.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133412638814,"sku":"573100-009","price":6912.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/573100_009_image_2b19c8eb-0fa0-4336-965f-08765963c6e7.png?v=1786105522","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-573100-009-a500-l-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}