{"product_id":"water-worker-4-4-gallon-water-heater-expansion-tank","title":"Water Worker 4.4 Gallon Water Heater Expansion Tank","description":"Water Worker 4.4 Gallon Water Heater Expansion Tank is a diaphragm-type pre-pressurized expansion tank designed specifically for potable hot water systems. It effectively controls water pressure build-up and eliminates relief valve spillage caused by thermal expansion when water is heated. Featuring a 3\/4\" male pipe thread connection, this tank requires no maintenance and meets code requirements in many counties and states. It is compatible with models G5, G5L, G12, and G12L, with a maximum allowable working temperature of 200°F. The standard factory precharge is set at 40 PSIG, while the relief valve must be set at 150 PSIG, ensuring the maximum pressure is maintained at least 10% below the relief valve setting. This model is listed with IAPMO and SBCCI and is NSF listed for the liner only, guaranteeing high standards of quality and safety.\n\nModel Number: G12L","brand":"Water Worker","offers":[{"title":"Default Title","offer_id":46631344636067,"sku":"406139","price":91.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/2469\/7763\/files\/5f5b69c7217f767221acb4600e7469bff3b26c1b_406139_1_H.png?v=1776299217","url":"https:\/\/www.hartvillehardware.com\/products\/water-worker-4-4-gallon-water-heater-expansion-tank","provider":"Hartville Hardware","version":"1.0","type":"link"}