{"product_id":"66-gal-floor-hyd-exp-tank","title":"66 GAL FLOOR HYD EXP TANK","description":"\u003ch3 data-section-id=\"1gquwrv\" data-start=\"124\" data-end=\"147\"\u003eProduct description\u003c\/h3\u003e\n\u003cp data-start=\"148\" data-end=\"311\"\u003eZilmet ZHT250 Hydronic Expansion Tank\u003cbr data-start=\"185\" data-end=\"188\"\u003eThis is a \u003cstrong data-start=\"198\" data-end=\"236\"\u003e66-gallon diaphragm expansion tank\u003c\/strong\u003e designed to manage thermal expansion in large closed-loop heating systems.\u003c\/p\u003e\n\u003ch3 data-section-id=\"x9uv27\" data-start=\"313\" data-end=\"335\"\u003eKey specifications\u003c\/h3\u003e\n\u003cul data-start=\"336\" data-end=\"721\"\u003e\n\u003cli data-section-id=\"10vvy4w\" data-start=\"336\" data-end=\"398\"\u003e\n\u003cstrong data-start=\"338\" data-end=\"347\"\u003eType:\u003c\/strong\u003e Hydronic expansion tank (boiler\/heating systems)\u003c\/li\u003e\n\u003cli data-section-id=\"it722a\" data-start=\"399\" data-end=\"427\"\u003e\n\u003cstrong data-start=\"401\" data-end=\"414\"\u003eCapacity:\u003c\/strong\u003e 66 gallons\u003c\/li\u003e\n\u003cli data-section-id=\"1fz1aw1\" data-start=\"428\" data-end=\"461\"\u003e\n\u003cstrong data-start=\"430\" data-end=\"450\"\u003eConnection size:\u003c\/strong\u003e 3\/4\" NPT\u003c\/li\u003e\n\u003cli data-section-id=\"um9jrv\" data-start=\"462\" data-end=\"520\"\u003e\n\u003cstrong data-start=\"464\" data-end=\"481\"\u003eMax pressure:\u003c\/strong\u003e ~60–90 PSI (varies by configuration)\u003c\/li\u003e\n\u003cli data-section-id=\"1tczkb3\" data-start=\"521\" data-end=\"551\"\u003e\n\u003cstrong data-start=\"523\" data-end=\"543\"\u003eMax temperature:\u003c\/strong\u003e 210°F\u003c\/li\u003e\n\u003cli data-section-id=\"142bh7p\" data-start=\"552\" data-end=\"625\"\u003e\n\u003cstrong data-start=\"554\" data-end=\"567\"\u003eMaterial:\u003c\/strong\u003e Carbon steel shell with internal rubber diaphragm (SBR)\u003c\/li\u003e\n\u003cli data-section-id=\"1u8w81j\" data-start=\"626\" data-end=\"662\"\u003e\n\u003cstrong data-start=\"628\" data-end=\"642\"\u003ePrecharge:\u003c\/strong\u003e Typically ~12 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"1rv5nk8\" data-start=\"663\" data-end=\"721\"\u003e\n\u003cstrong data-start=\"665\" data-end=\"681\"\u003eOrientation:\u003c\/strong\u003e Vertical floor-mounted tank with base\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1urilu4\" data-start=\"723\" data-end=\"739\"\u003eWhat it does\u003c\/h3\u003e\n\u003cp data-start=\"740\" data-end=\"870\"\u003eIn large hydronic systems (boilers, radiant heating, district heating loops), water expands significantly when heated. The ZHT250:\u003c\/p\u003e\n\u003cul data-start=\"871\" data-end=\"1042\"\u003e\n\u003cli data-section-id=\"1dc6eew\" data-start=\"871\" data-end=\"905\"\u003eabsorbs large volume expansion\u003c\/li\u003e\n\u003cli data-section-id=\"19q3824\" data-start=\"906\" data-end=\"936\"\u003estabilizes system pressure\u003c\/li\u003e\n\u003cli data-section-id=\"13tm28d\" data-start=\"937\" data-end=\"981\"\u003eprevents pressure relief valve discharge\u003c\/li\u003e\n\u003cli data-section-id=\"10vpamp\" data-start=\"982\" data-end=\"1042\"\u003eprotects boilers, pumps, and piping from pressure spikes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"a7xjq3\" data-start=\"1044\" data-end=\"1063\"\u003eWhere it’s used\u003c\/h3\u003e\n\u003cul data-start=\"1064\" data-end=\"1200\"\u003e\n\u003cli data-section-id=\"1myqqdb\" data-start=\"1064\" data-end=\"1092\"\u003eCommercial boiler plants\u003c\/li\u003e\n\u003cli data-section-id=\"193tztb\" data-start=\"1093\" data-end=\"1124\"\u003eLarge multifamily buildings\u003c\/li\u003e\n\u003cli data-section-id=\"1wckmpq\" data-start=\"1125\" data-end=\"1165\"\u003eSchools, industrial hydronic systems\u003c\/li\u003e\n\u003cli data-section-id=\"1shtcdh\" data-start=\"1166\" data-end=\"1200\"\u003eLarge radiant heating networks\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZILMET USA","offers":[{"title":"Default Title","offer_id":52411524907297,"sku":"ZHT250","price":811.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1905\/1041\/files\/download_1_38658af3-5880-4067-b23b-ffe7add77707.webp?v=1777401739","url":"https:\/\/standardvmi.com\/products\/66-gal-floor-hyd-exp-tank","provider":"Standard Plumbing Supply","version":"1.0","type":"link"}