Distributor for regulation of e.g. drinking water supplies has a main throughflow housing and a backflow preventer and an external backflow preventer with a middle chamber that has an exit valve

摘要

The distributor has a main throughflow housing (1) and a backflow preventer (12,24) and an external backflow preventer (60)with a middle chamber (9) that has an exit valve (12,14) which is dependent on the pressure difference between the inlet (6) and the middle chamber. The rear flow prevention section (52) gas a membrane (24) which moves freely from the flow of water and moves relative to the pressure difference between the middle chamber and the inlet and outlet.