{"product_id":"armstrong-572018-006-sx-40v-diaphragm-expansion-tank","title":"Armstrong 572018-006 SX-40V Diaphragm Expansion Tank","description":"\u003cp\u003eEfficiently manage thermal expansion in your hydronic heating or cooling system with the \u003cstrong\u003eArmstrong 572018-006\u003c\/strong\u003e diaphragm expansion tank. Designed for the \u003cstrong\u003eSX-40V\u003c\/strong\u003e model series, this component provides the critical storage volume required to absorb fluid expansion as system temperatures fluctuate, ensuring your equipment operates within safe design parameters.\u003c\/p\u003e\u003cp\u003eThe internal diaphragm design creates a reliable barrier between the system water and the pre-charged air cushion. This separation effectively isolates the water from the air, preventing common issues such as waterlogging, corrosion, and the repetitive, unnecessary discharge of system pressure relief valves.\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 charge pressure to reduce operational stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpansion Management:\u003c\/strong\u003e Compensates for liquid volume changes during thermal cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Protection:\u003c\/strong\u003e Minimizes wear on relief valves and automatic make-up water feeders.\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 commercial cooling installations requiring consistent pressure stabilization.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133375840350,"sku":"572018-006","price":670.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/572018_006_image_47b70d31-b50a-47b4-8e55-6c60388809e7.png?v=1786104955","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-572018-006-sx-40v-diaphragm-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}