{"product_id":"wilkins-xt-35-water-thermal-expansion-tank-90-gal","title":"Wilkins XT-35 | Water Thermal Expansion Tank, 9.0 Gal","description":"\u003cp\u003e\nThe Wilkins XT-35 is a 35-liter water thermal expansion tank designed to protect potable water systems from pressure increases caused by thermal expansion in water heaters.\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eKey Specifications:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Volume \u0026amp; Acceptance Volume:\u003c\/strong\u003e 9.0 gal capacity, 4.25 gal acceptance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Supply Pressure:\u003c\/strong\u003e 80 PSI maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-charge Pressure:\u003c\/strong\u003e 40 PSI factory setting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotable Certifications:\u003c\/strong\u003e NSF\/ANSI 61 \u0026amp; 372\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e 3\/4 Inches NPT threaded\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eOther Related Variants:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eXT-8:\u003c\/strong\u003e 8 liter (2.1 gal) capacity version\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXT-18:\u003c\/strong\u003e 18 liter (4.8 gal) capacity version\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eMaterials:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCarbon steel outer shell\u003c\/li\u003e\n\u003cli\u003eEpoxy finish coating\u003c\/li\u003e\n\u003cli\u003eStainless steel connection\u003c\/li\u003e\n\u003cli\u003ePolypropylene liner\u003c\/li\u003e\n\u003cli\u003eButyl rubber diaphragm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTypical Installation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003e\nLocal codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted on the cold water supply and at least 18 inches from the cold water inlet to the heater. Pre-charge should be adjusted to match incoming water pressure with no water pressure in tank. Maximum allowable pre-charge in this expansion tank is 80 PSI. A properly sized pressure relief valve set at a maximum of 150 PSI must also be installed in the system. For installations that have a supply pressure above 80 PSI, a properly sized pressure reducing valve should be installed on the system.\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eStandards Compliance:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; border-left: 4px solid #1d85af; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003e\nIAPMO Listed; Water Quality Association Certified to NSF\/ANSI\/CAN 61 \u0026amp; NSF\/ANSI 372; ANSI B1.20.1\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eFeatures \u0026amp; Benefits:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Expansion Protection:\u003c\/strong\u003e Absorbs excess pressure when water heats, preventing relief valve discharge and system damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Carbon steel shell with polypropylene liner prevents water contact with metal, extending service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNSF Certified Safety:\u003c\/strong\u003e Meets NSF\/ANSI 61 and 372 standards for safe drinking water contact and lead-free compliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Pre-charge:\u003c\/strong\u003e Factory 40 PSI setting can be adjusted on-site to match system pressure requirements up to 80 PSI.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What size water heater does the Zurn XT-35 support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Based on the sizing chart, the Zurn XT-35 is suitable for water heaters ranging from 100 to 200+ gallons at 80 PSI supply pressure, or 60 to 200+ gallons at lower pressures, assuming a 100°F temperature rise.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I adjust the pre-charge pressure on this tank?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The tank includes a standard tire valve (0.301\"-32 charging valve connection) that allows you to adjust the pre-charge pressure using a standard air pump. Adjust only when no water pressure is in the tank, and set to match your incoming water pressure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can the Wilkins XT-35 be used with high-temperature water systems?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, while certified to NSF 61 for domestic hot water, the XT-35 is suitable for temperatures up to 200°F. However, it is not suitable for use on fire sprinkler systems as required by NFPA 13 or 13D.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cdiv id=\"W3TucRPBpqQA9ARvwg6ni-content\"\u003e\n\u003cp\u003e\n\u003cspan\u003e\n\u003cstrong\u003eNOTICE:\u003c\/strong\u003e\nDo not use with water that is unsafe or of unknown quality without adequate\ndisinfection either before or after the system.\n\u003c\/span\u003e\n\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\n\u003ci\u003e\n\"Hydrate Everyone, Everywhere!\" BottleFillingStations.com |\n\u003ca rel=\"noopener\" href=\"https:\/\/bottlefillingstations.com\/pages\/contact-us\" target=\"_blank\"\u003e\nContact us\n\u003c\/a\u003e\n\u003c\/i\u003e\n\u003c\/p\u003e","brand":"Zurn Wilkins","offers":[{"title":"Default Title","offer_id":42983793459263,"sku":"XT-35","price":524.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/XT-35_AF.jpg?v=1772854879","url":"https:\/\/bottlefillingstations.com\/products\/wilkins-xt-35-water-thermal-expansion-tank-90-gal","provider":"BottleFillingStations.com","version":"1.0","type":"link"}