Pre-Charged Non-Potable Water Expansion Tank

To absorb the increased water volume created when a hot water boiler is heated . look to this Watts water expansion tank. Made for non-potable water systems and closed-loop heating systems . the pre-charged steel tank has the equivalent capacity of 2.1 gal. With a maximum working pressure of 60 psi . it maintains the system pressure below the relief setting of the relief valve.