{"product_id":"2-1g-hydronic-expansion-tank","title":"2.1G HYDRONIC EXPANSION TANK","description":"\u003ch3 data-section-id=\"1gquwrv\" data-start=\"96\" data-end=\"119\"\u003eProduct description\u003c\/h3\u003e\n\u003cp data-start=\"120\" data-end=\"316\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eZilmet ZHT8-15 Hydronic Expansion Tank\u003c\/span\u003e\u003c\/span\u003e\u003cbr data-start=\"157\" data-end=\"160\"\u003eThe ZHT8-15 is a compact \u003cstrong data-start=\"185\" data-end=\"224\"\u003e2.1-gallon diaphragm expansion tank\u003c\/strong\u003e designed to absorb pressure changes in hot water heating systems (boilers, hydronic loops).\u003c\/p\u003e\n\u003ch3 data-section-id=\"x9uv27\" data-start=\"318\" data-end=\"340\"\u003eKey specifications\u003c\/h3\u003e\n\u003cul data-start=\"341\" data-end=\"656\"\u003e\n\u003cli data-section-id=\"ujunyr\" data-start=\"341\" data-end=\"395\"\u003e\n\u003cstrong data-start=\"343\" data-end=\"352\"\u003eType:\u003c\/strong\u003e Hydronic (heating system) expansion tank\u003c\/li\u003e\n\u003cli data-section-id=\"yxufa7\" data-start=\"396\" data-end=\"425\"\u003e\n\u003cstrong data-start=\"398\" data-end=\"411\"\u003eCapacity:\u003c\/strong\u003e 2.1 gallons\u003c\/li\u003e\n\u003cli data-section-id=\"1n4yl7k\" data-start=\"426\" data-end=\"454\"\u003e\n\u003cstrong data-start=\"428\" data-end=\"443\"\u003eConnection:\u003c\/strong\u003e 1\/2\" NPT\u003c\/li\u003e\n\u003cli data-section-id=\"11xgute\" data-start=\"455\" data-end=\"507\"\u003e\n\u003cstrong data-start=\"457\" data-end=\"474\"\u003eMax pressure:\u003c\/strong\u003e ~60–75 PSI (varies by listing)\u003c\/li\u003e\n\u003cli data-section-id=\"1tczkb3\" data-start=\"508\" data-end=\"538\"\u003e\n\u003cstrong data-start=\"510\" data-end=\"530\"\u003eMax temperature:\u003c\/strong\u003e 210°F\u003c\/li\u003e\n\u003cli data-section-id=\"1jx8wzm\" data-start=\"539\" data-end=\"603\"\u003e\n\u003cstrong data-start=\"541\" data-end=\"554\"\u003eMaterial:\u003c\/strong\u003e Carbon steel shell with rubber diaphragm (SBR)\u003c\/li\u003e\n\u003cli data-section-id=\"cw2h9b\" data-start=\"604\" data-end=\"656\"\u003e\n\u003cstrong data-start=\"606\" data-end=\"614\"\u003eUse:\u003c\/strong\u003e Non-potable closed-loop heating systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1urilu4\" data-start=\"658\" data-end=\"674\"\u003eWhat it does\u003c\/h3\u003e\n\u003cp data-start=\"675\" data-end=\"734\"\u003eIn a boiler system, water expands when heated. The ZHT8-15:\u003c\/p\u003e\n\u003cul data-start=\"735\" data-end=\"857\"\u003e\n\u003cli data-section-id=\"gn2yhb\" data-start=\"735\" data-end=\"764\"\u003eabsorbs that extra volume\u003c\/li\u003e\n\u003cli data-section-id=\"19q3824\" data-start=\"765\" data-end=\"795\"\u003estabilizes system pressure\u003c\/li\u003e\n\u003cli data-section-id=\"8ltvzy\" data-start=\"796\" data-end=\"857\"\u003eprevents pressure relief valve discharge or system damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"135aw7p\" data-start=\"859\" data-end=\"883\"\u003eTypical applications\u003c\/h3\u003e\n\u003cul data-start=\"884\" data-end=\"1022\"\u003e\n\u003cli data-section-id=\"1o2bqwo\" data-start=\"884\" data-end=\"924\"\u003eResidential hydronic heating systems\u003c\/li\u003e\n\u003cli data-section-id=\"1nusb27\" data-start=\"925\" data-end=\"946\"\u003eBaseboard heating\u003c\/li\u003e\n\u003cli data-section-id=\"3wb1nx\" data-start=\"947\" data-end=\"972\"\u003eRadiant floor heating\u003c\/li\u003e\n\u003cli data-section-id=\"25m6s1\" data-start=\"973\" data-end=\"1022\"\u003eSmall boiler systems (up to ~50,000 BTU setups)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZILMET USA","offers":[{"title":"Default Title","offer_id":52411525333281,"sku":"ZHT8-15","price":62.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1905\/1041\/files\/download_6a1c1c29-e745-4bc7-9fc4-af17cbb4b34e.webp?v=1777394180","url":"https:\/\/standardvmi.com\/products\/2-1g-hydronic-expansion-tank","provider":"Standard Plumbing Supply","version":"1.0","type":"link"}