The stainless steel expansion tank is suitable for use in sanitary cold/hot water systems and is compatible with nearly all domestic waterworks, solar and pressure maintenance systems, as well as garden pumps.

This 50-liter stainless steel pressure tank comes with an EPDM membrane. The tank is designed for a maximum pressure of 5.4 bar and is delivered in a horizontal configuration with a mounting plate for a domestic waterworks system. The manufacturer tests the container for tightness at a water pressure of up to 5.4 bar.

The membrane tank has a connection size of 32.89–33.25 mm (formerly 1 inch). Additionally, the pressure tank features an integrated valve (similar to a car tire valve) to control and regulate the counter-pressure for the membrane.

These pressure vessels are welded from quality steel sheets according to UNI-EN standards and are equipped with a heat- and aging-resistant EPDM membrane. The EPDM membrane is easily replaceable.

Regarding the pre-pressure in the membrane tank: The pre-pressure should be approximately 0.1–0.2 bar below the pump's switching pressure and must be checked regularly. Failure to do so may result in damage to the EPDM membrane of the pressure membrane tank. A more precise calculation can be derived from the formula "Pump switching pressure x 0.9". For example: If the switching pressure on the pressure switch of the domestic waterworks is set to 1.5 bar: 1.5 bar x 0.9 = 1.3–1.4 bar.

Important: The tank pressure should only be inflated or released when the pressure in the water system has been relieved. Caution: Always relieve air and water pressure before opening a membrane tank!.