Fluid throttle valve with control plunger - has plunger enclosed by fluid deflector at radial drilling

摘要

The fluid throttle valve has a control plunger forming a seal in a housing and varying the cross-section between the inlet and the outlet. An axial drilling and a number of radial ones in the plunger work with further radial drillings in the housing, so as to connect a pressure chamber either with an unpressurised return pipe or a pressure source. Where a radial drilling (10) in the plunger connects to the pressure chamber (15), the plunger (2) is enclosed by a coaxial assembly (12,13,14) deflecting and/or dividing the inflowing or outflowing fluid.