{"product_id":"armstrong-572006-304-ast-42-asme-pre-pressurized-expansion-tank","title":"Armstrong 572006-304 AST-42 ASME Pre-Pressurized Expansion Tank","description":"\u003cp\u003eEfficient thermal expansion management is critical to the longevity of your commercial hydronic system, and the \u003cb\u003eArmstrong 572006-304 AST-42\u003c\/b\u003e provides the reliable pressure stabilization required for demanding environments. Designed to meet strict ASME safety codes, this pre-pressurized tank effectively absorbs expanded fluid volumes, preventing unnecessary pressure spikes and reducing wear on mechanical components.\u003c\/p\u003e\u003cp\u003eThis unit operates through a flexible internal diaphragm that separates the system fluid from the pre-charged air cushion. When system temperatures rise, the expanding water enters the tank, compressing the air buffer to maintain consistent operational pressure without venting fluid from the system.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePressure Management:\u003c\/b\u003e Engineered for consistent thermal expansion absorption in closed-loop systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eASME Compliance:\u003c\/b\u003e Built to rigorous pressure vessel standards for maximum safety and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDiaphragm Integrity:\u003c\/b\u003e Heavy-duty internal membrane prevents waterlogging and maintains precise charge levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRapid Fulfillment:\u003c\/b\u003e Optimized logistics ensure this critical component ships the same day to minimize system downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for high-efficiency boiler installations, large-scale commercial HVAC cooling loops, and medium-to-large radiant heating distribution networks where precise pressure control is essential for component longevity.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133345398878,"sku":"572006-304","price":2647.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/572006_304_image_93770cfc-0fb5-4935-b488-b3a89f469b2d.png?v=1786104517","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-572006-304-ast-42-asme-pre-pressurized-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}