928-016

The Amtrol ET-30 is a high-quality thermal expansion tank designed for use in closed-loop hydronic heating and cooling systems. This essential boiler component is engineered to control pressure by absorbing the expanded volume of water that results from heating, preventing system damage and unnecessary pressure relief valve discharge. Featuring a heavy-duty diaphragm that separates the air cushion from the system water, it maintains proper system pressure and helps prevent corrosion and waterlogging. This expansion tank is a reliable solution for residential and light commercial boiler applications, ensuring quiet operation and extending the overall lifespan of your heating system.
Type: Hydronic Expansion Tank
Size: Medium / 4.4 Gallon Capacity
Dimensions: 11 inches × 11 inches × 15 inches
Application: Used in closed-loop hydronic heating systems, residential boilers, and pressurized water systems to manage thermal expansion.
Specifications: Factory pre-charged at 12 PSI; Maximum working pressure of 100 PSI; Carbon steel shell construction with a durable diaphragm; 1/2-inch NPTM connection.