The expansion tank eliminates the pulsating operation of the pump and supplies a constant flow of water in the required quantity. The internal pressurized diaphragm provides a smooth, surge-free flow of water.
It extends the life of the pump and boiler and cuts water consumption. The A20 can be dismantled for diaphragm repair and checks.
It is precharged at 0.9 bars (13 psi) but it can be charged with the special valve with a normal compressor so it can be adapted to all pumps.
