Positive-displacement pump - has pressure limitation valve with discharge side opening into discharge channel directed towards regulator piston

摘要

The pump has a pressure limitation valve (24). The discharge side of the valve opens into a discharge channel (25) directed towards a regulator piston (7). When the valve responds, the regulating flow moves the piston in the closing direction. The channel of the valve is directed towards the regulator piston of an output regulator valve (8). The pressure limitation valve is located equiaxially to the drive shaft (3) of the pump. The channel is pref. at right angles to the valve. The regulator piston floats in the intake channel (26). ADVANTAGE - Drive momentum and oil heating during reaction of pressure limitation valve are reduced.