Amtrol invented the thermal expansion tank to control pressure build-up in closed, potable water systems. This prevents the water heater pressure relief valve from opening, saves energy and eliminates a potential safety hazard. All Therm-X-Trol expansion tanks are made in the USA in our ISO 9001:2015 certified facility.

Features

• Patent Pending Antimicrobial Liner Neutralizes Bacteria on Contact.
• Patented Turbulator Water Circulation Device.
• Patented InSight Indicator Cap Tank Service Alert.
• Strongest Tank Design Featuring Deep Drawn Steel and Multi-Dome Construction.
• Thickest Diaphragm – Heavy Duty Butyl.
• Projection Welded Air Stem to Help Eliminate Leaks.
• Stainless Steel System Connection.

Specs