{"product_id":"armstrong-572018-001-diaphragm-expansion-tank-15","title":"Armstrong 572018-001 Diaphragm Expansion Tank 15","description":"\u003cp\u003eOptimizing your hydronic system's fluid management is essential for long-term reliability, and the \u003cstrong\u003eArmstrong 572018-001\u003c\/strong\u003e diaphragm expansion tank provides the perfect solution. Engineered to accommodate fluid volume fluctuations caused by thermal expansion and contraction, this tank ensures your system maintains consistent charge pressure during operational heating and cooling cycles.\u003c\/p\u003e\u003cp\u003eThe unit functions by utilizing an internal flexible diaphragm that separates the system water from the air cushion. As temperatures rise and fluid expands, the diaphragm flexes to absorb the extra volume, preventing nuisance activation of pressure relief valves and minimizing the need for unnecessary water make-up, which keeps system chemistry stable and reduces corrosion.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Regulation:\u003c\/strong\u003e Maintains optimal system charge pressure to prevent unnecessary relief valve discharge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management:\u003c\/strong\u003e Effectively absorbs expanded fluid volume resulting from temperature fluctuations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Longevity:\u003c\/strong\u003e Reduces the frequency of water make-up, helping to minimize oxygen-rich water introduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Rugged diaphragm design ensures consistent performance and long service life.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for residential and light commercial hydronic heating systems, radiant floor heating, and boiler-fed cooling loops where steady system pressure is critical for equipment longevity.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133366435934,"sku":"572018-001","price":254.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/572018_001_image_74aa66d8-3770-470f-9ebb-b35c0bae1dc1.png?v=1786104808","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-572018-001-diaphragm-expansion-tank-15","provider":"National Boiler Supply","version":"1.0","type":"link"}