{"product_id":"therm-x-span-t-12-thermal-expansion-tank-4-4-gal","title":"Therm-X-Span T-12 Thermal Expansion Tank 4.4 gal","description":"The Therm-X-Span T-12 Thermal Expansion Tank is a pre-pressurized diaphragm expansion tank. The tank is installed on the cold water supply line to the water heater to control pressure build up caused by thermal expansion. Installing the T-12 will virtually eliminate relief valves spills, protect plumbing fixtures and extend the life of your water heater.\u003cbr\u003e  \u003cb\u003e\u003cbr\u003e\u003c\/b\u003e  \u003cb\u003eSpecifications:\u003c\/b\u003e  \u003cul\u003e\n\u003cli\u003eDiaphragm Material: Butyl Rubber\/EPDM\u003c\/li\u003e\n\u003cli\u003eFactory Pre-Charge: 40 psig\u003c\/li\u003e\n\u003cli\u003eMax Operating Temperature: 200°F\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psig\u003c\/li\u003e\n\u003cli\u003eSystem Connection: 3\/4\" NPTM Brass\u003c\/li\u003e\n\u003c\/ul\u003eInstall the expansion tank on the cold water supply line to the water heater at a point between the water heater and backflow preventer or other one-way device.\u003cbr\u003e  \u003cbr\u003e  \u003cb\u003eNote:\u003c\/b\u003e Be sure to measure the system water pressure using a water pressure gauge, and make sure that the air pressure in the thermal expansion tank is the same as the system pressure. The thermal expansion tank is pre-charged to 40 psi. Verify the charge of the tank using a tank pressure gauge.\u003ccenter\u003e\u003cimg src=\"http:\/\/assets.freshwatersystems.com\/image\/upload\/s--BI_jFY1e--\/soq67reahseo6zksx0qn.jpg\"\u003e\u003c\/center\u003e","brand":"Amtrol","offers":[{"title":"Default Title","offer_id":13250355494955,"sku":"T-12","price":65.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2723\/8896\/files\/jvdtfhbdhcwzjt9mq9fs_249f3e3f-522b-498b-a528-e35866e4f2af.jpg?v=1792656090","url":"https:\/\/freshwitersystems.com\/products\/therm-x-span-t-12-thermal-expansion-tank-4-4-gal","provider":"Fresh Water Systems","version":"1.0","type":"link"}