- 4.4 Gallon Pre-Charged Hydronic Expansion Tank.
- Designed for closed loop hydronic heating systems using baseboards or radiators.
- Features a heavy duty diaphragm that flexes against an air cushion to maintain a safe operating pressure.
- Maximum temperature is 240 degrees Fahrenheit and the maximum working pressure is 100 psi.
- Pre-charged at 12 psi and has a 1/2 in. NPTM connection.