Zurn Wilkins XT-35 – 9 Gallon XT Thermal Expansion Tank

The Zurn Wilkins XT-35 is a 9-gallon diaphragm-style expansion tank designed to protect residential potable water systems from thermal expansion pressure. Installed between a backflow preventer or pressure-reducing valve and a water heater, it safely absorbs excess pressure as heated water expands.

A polypropylene-lined chamber and Butyl rubber diaphragm maintain system stability by allowing water to enter and flex the diaphragm into a pre-charged air chamber. This durable design ensures long-term performance and easy field maintenance.

Features

• Field-adjustable pre-charge for convenient service
• Epoxy-coated carbon steel shell for long-lasting durability
• Butyl rubber diaphragm with a polypropylene liner
• Corrosion-resistant stainless steel connection
• Designed specifically for residential thermal expansion protection
• Compliant with low-lead regulations

Certifications

• IAPMO Listed
• WQA Certified to NSF/ANSI 61 & 372

Applications

• Residential potable water systems
• Installations between backflow preventers or PRVs and water heaters
• Thermal expansion pressure control

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