{"product_id":"armstrong-572018-009-sx-110v-diaphragm-expansion-tank","title":"Armstrong 572018-009 SX-110V Diaphragm Expansion Tank","description":"\u003cp\u003eHydronic heating systems rely on the \u003cstrong\u003eArmstrong 572018-009\u003c\/strong\u003e diaphragm expansion tank to safely manage volumetric changes caused by fluctuating fluid temperatures. By integrating this \u003cstrong\u003eSX-110V\u003c\/strong\u003e model into your loop, you effectively stabilize system pressure, preventing the common fluctuations that lead to premature component wear or nuisance pressure relief valve activations.\u003c\/p\u003e\u003cp\u003eThis vessel utilizes a flexible internal diaphragm that separates the system fluid from a pre-charged air cushion. As water expands during heating cycles, it pushes against the diaphragm, compressing the air cushion and allowing the system to accommodate the increased volume without causing unsafe pressure spikes or requiring excessive make-up water.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Stability:\u003c\/strong\u003e Maintains consistent charge pressure across fluctuating thermal ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid Containment:\u003c\/strong\u003e Prevents system fluid loss through relief equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Protection:\u003c\/strong\u003e Extends the service life of piping, valves, and heat exchangers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Separation:\u003c\/strong\u003e Integrated design minimizes unwanted air accumulation in hydronic circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for residential and commercial closed-loop hydronic heating systems, radiant floor heating, and baseboard circulation networks requiring precise pressure control.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133386784862,"sku":"572018-009","price":1680.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/572018_009_image_c3fffaf4-fb39-48f0-857a-34ebaa907177.png?v=1786105063","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-572018-009-sx-110v-diaphragm-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}