[144] One-way flow control valve (1)
The one-way flow control
valve is a combination of an orifice or throttle valve and a
non-return valve. In the closed direction shown of the non-return
valve, the volumetric flow passes via the variable throttle gap,
which creates a considerable resistance.
Speed reduction can be achieved by using a one-way flow control valve in conjunction with a pressure relief valve or a variable-delivery pump. The pressure rises upstream of the flow control valve until the PRV opens and routes part of the flow to the tank.