Mouth spray apparatus

摘要

The mouth spray apparatus is with a piston pump system and has an expansion zone (13) with elastic expansion within the water feed at the pressure side. The expansion zone is restricted (15), in the relaxed start setting. A non-return valve is downstream, behind the expansion zone (13). The restriction (15), at the start setting with a small volume, is coupled to the operating mechanism (17), to reduce the water flow cross section and give a synchronised operation. The mouth spray has a grip with a nozzle, to direct the pumped water stream.