{"product_id":"neo-pure-thermal-expansion-tank-2-1-gal-3-4-mnpt-open-box","title":"Neo-Pure Thermal Expansion Tank 2.1 gal  3\/4 MNPT OPEN BOX","description":"\u003cp\u003e\u003cb\u003eConsumer Note:\u003c\/b\u003e  All Tanks were set to Factory standard pressure for testing. Through the conducted test, no pressure was lost and no leaks were detected. This tank maintains full functionality with only exterior blemishes. This is a deal you cannot pass up! \u003cb\u003eThis item is selling As Is, no returns will be accepted.\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eneoPure Thermal Expansion Tanks\u003c\/b\u003e are designed for residential water heaters and hot water storage systems to absorb excess water volume created during thermal expansion. By helping maintain stable system pressure, these tanks reduce stress on plumbing components and protect against damaging pressure spikes. Featuring a durable internal diaphragm that separates air and water, they provide reliable, long-lasting performance while helping extend the life of your water heater, fixtures, and appliances.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAbsorbs excess pressure caused by thermal expansion\u003c\/li\u003e\n\u003cli\u003eHelps protect water heaters and plumbing fixtures from premature wear\u003c\/li\u003e\n\u003cli\u003ePrevents pressure buildup within closed water systems\u003c\/li\u003e\n\u003cli\u003eDurable internal diaphragm separates air and water\u003c\/li\u003e\n\u003cli\u003eSupports consistent water pressure and system longevity\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv style=\"font-family: Jost, sans-serif; max-width: 680px; margin-top: 14px; margin-bottom: 14px\"\u003e\n  \u003cdetails style=\"background: #ffffff; border-radius: 25px; overflow: hidden\" ontoggle=\"\n      this.querySelector('.disclosure__toggle path').setAttribute(\n        'd',\n        this.open ? 'M20 16 12.5 8.5 5 16' : 'M20 8.5 12.5 16 5 8.5',\n      )\n    \"\u003e\n    \u003csummary style=\"\n        background: #9fd8cf;\n        padding: 10px 16px;\n        font-size: 17px;\n        font-weight: bold;\n        letter-spacing: 0.03em;\n        cursor: pointer;\n        list-style: none;\n        display: flex;\n        justify-content: space-between;\n        align-items: center;\n      \" onmouseover=\"this.style.background = '#1FC7AE'\" onmouseout=\"this.style.background = '#9fd8cf'\"\u003e\n      Maximum Water Temperature\n      \u003cspan class=\"disclosure__toggle\" style=\"display: inline-block\"\u003e\n        \u003csvg width=\"20\" height=\"20\" viewbox=\"0 -5 24 24\" aria-hidden=\"true\" focusable=\"false\" role=\"presentation\"\u003e\n          \u003cpath d=\"M20 8.5 12.5 16 5 8.5\" stroke=\"currentColor\" stroke-width=\"1.5\" fill=\"none\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e\n      \u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"max-height: 350px; overflow: auto\"\u003e\n      \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; background-color: #ffffff; color: #000000; opacity: 1\"\u003e\n        \u003cthead\u003e\n          \u003ctr\u003e\n          \u003cth style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #deedef; color: #000000; opacity: 1\"\u003eWater Heater Size\/Volume\u003c\/th\u003e\n          \u003cth style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #deedef; color: #000000; opacity: 1\"\u003e130º F\u003c\/th\u003e\n          \u003cth style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #deedef; color: #000000; opacity: 1\"\u003e140º F\u003c\/th\u003e\n          \u003cth style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #deedef; color: #000000; opacity: 1\"\u003e160º F\u003c\/th\u003e\n          \u003cth style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #deedef; color: #000000; opacity: 1\"\u003e180º F\u003c\/th\u003e\n          \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e30 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e40 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e50 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e60 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e80 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-021\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e100 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-090\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e120 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-090\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e150 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-090\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-090\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003e175 GALLONS\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-048\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-090\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-090\u003c\/td\u003e\n          \u003ctd style=\"border: 1px solid #ccc; padding: 6px 8px; text-align: center; vertical-align: middle; background-color: #ffffff; color: #000000; opacity: 1\"\u003eTET-090\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-family:Arial, sans-serif; font-size:14px; margin:5px 0; text-align:left;\"\u003e\n    Sizing based on water heater recovery from 40F, water supply pressure of 60 PSIG, \n    and relief valve set at 150 PSIG. Adjust tank precharge to equal incoming water pressure.\n  \u003c\/p\u003e\n\n\u003cdiv class=\"neoPure Reverse Osmosis Tanks\" style=\"text-align:left; margin-top:0; padding-top:0;\"\u003e \n\n  \u003ctable style=\"width:100%; max-width:1000px; border-collapse:collapse; border-spacing:0; margin-top:0; font-family:Arial, sans-serif; font-size:14px; color:#333; text-align:left;\"\u003e \n\n    \u003ctbody\u003e \n\n      \u003c!-- Image 1 --\u003e \n\n      \u003ctr\u003e \n\n        \u003ctd colspan=\"2\" style=\"padding:0 0 15px 0;\"\u003e \n\n          \u003cimg src=\"https:\/\/assets.freshwatersystems.com\/image\/upload\/s--41E2eEhx--\/pa8skeewclileudr0www\" alt=\"Diagram showing a water heater, boiler, and a thermal expansion tank (TET-021) installed to prevent unsafe pressures and dripping relief valves\" style=\"width:100%; max-width:1000px; height:auto; display:block;\"\u003e \n\n        \u003c\/td\u003e \n\n      \u003c\/tr\u003e \n\n  \n\n      \u003c!-- Image 2 --\u003e \n\n      \u003ctr\u003e \n\n        \u003ctd colspan=\"2\" style=\"padding:15px 0;\"\u003e \n\n          \u003cimg src=\"https:\/\/assets.freshwatersystems.com\/image\/upload\/s--IjDgdWxq--\/ztadoo5k9jek9mfen2yg\" alt=\"Close ups of the bottom and top of the thermal expansion tank next to a water heater. The tank prevents pressure build up\" style=\"width:100%; max-width:1000px; height:auto; display:block;\"\u003e \n\n        \u003c\/td\u003e \n\n      \u003c\/tr\u003e \n\n  \n\n      \u003c!-- Image 3 --\u003e \n\n      \u003ctr\u003e \n\n        \u003ctd colspan=\"2\" style=\"padding:15px 0;\"\u003e \n\n          \u003cimg src=\"https:\/\/assets.freshwatersystems.com\/image\/upload\/s--1YGMSLQV--\/fm16rguioufvtidkktwt\" alt=\"Diagram showing how water enters a water heater and where the thermal expansion tank is in the process\" style=\"width:100%; max-width:1000px; height:auto; display:block;\"\u003e \n\n        \u003c\/td\u003e \n\n      \u003c\/tr\u003e \n\n    \u003c\/tbody\u003e \n\n  \u003c\/table\u003e \n\n\u003c\/div\u003e","brand":"neoPure","offers":[{"title":"Default Title","offer_id":53544859861176,"sku":"TET-021-OB","price":21.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2723\/8896\/files\/rxdtcgt96ok8bmiatc90_c6ba45e8-ca1a-4fd2-a178-2a4a4d3b4e32.jpg?v=1780568571","url":"https:\/\/www.freshwatersystems.com\/products\/neo-pure-thermal-expansion-tank-2-1-gal-3-4-mnpt-open-box","provider":"Fresh Water Systems","version":"1.0","type":"link"}