Amtrol 392197 Thermal Expansion Tank 150 Psi

Product Description

The AMTROL 392197 is a thermal expansion tank designed to absorb the pressure increases that occur as water heats and expands in closed plumbing systems. Rated to 150 psi, it protects water heaters, boilers, and associated plumbing components from damaging overpressure conditions. The tank uses a pre-pressurized bladder or diaphragm to separate the air charge from the system water, maintaining consistent system pressure without waterlogging. Plumbers and mechanical contractors install this type of tank on residential and light commercial potable water and hydronic heating systems where a backflow preventer or pressure-reducing valve creates a closed system condition.

The AMTROL 392197 is suited for closed domestic hot water supply systems and hydronic heating applications where thermal expansion must be managed to meet plumbing code requirements. It is part of the Therm-X-Trol product line, which is a recognized category of expansion tanks used in both new construction and retrofit installations. This tank is appropriate for systems where local codes require an approved expansion control device downstream of a check valve or pressure-reducing valve.

Key Features

• Rated to 150 psi maximum working pressure
• Pre-pressurized design maintains consistent system pressure
• Bladder or diaphragm construction isolates air charge from potable or system water
• Suitable for closed domestic hot water and hydronic heating systems
• Part of the AMTROL Therm-X-Trol expansion tank series

Compatibility

Designed as an OEM-style replacement or direct installation expansion tank for closed residential and light commercial hot water supply and hydronic heating systems requiring thermal expansion control up to 150 psi.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off the water supply and relieve system pressure before installing or replacing the expansion tank. Verify the tank pre-charge air pressure matches the system static pressure before connecting. Do not exceed the 150 psi maximum working pressure rating of the tank.

Technical Specifications

• Maximum Working Pressure: 150 psi
• UPC: 642031579959

Standard Information

• Brand: AMTROL
• Manufacturer Part Number: 392197