Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components

pilot-operated pressure reducing valve

Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

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The pilot operated pressure reducing valves are built and operate on principles similar to the compound relief valves, described earlier in Section 6.15.

PILOT-OPERATED PRESSURE REDUCING VALVE

The pilot operated pressure reducing valves are built and operate on principles similar to the compound relief valves, described earlier in Section 6.15.

1. Analysis of KW Power Loss Across the Pressure Relief Valve

The kW power loss across the pressure relief valve (also for the unloading valve) can be determined by using the relation :


where P = Valve pressure setting in kPa, and

Q = Outlet flow rate in m3/s.

Note

It should be noted that there are no valves available for increasing the system pressure. As discussed above, it is possible only to have a valve which will reduce the system pressure.

Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components : Tag: : Hydraulic Actuators and Control Components - Hydraulics and Pneumatics - pilot-operated pressure reducing valve

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Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components


Hydraulic Actuators: The Transmitter - Introduction, Learning Objectives

linear actuators (or hydraulic cylinders) - What are Linear Actuators?, Types,

single-acting cylinders

double-acting cylinders - What are Double-Acting Cylinders?, Construction, Operation

cylinder cushioning - What is Meant by Cylinder Cushion ?, Construction and Operation,

special hydraulic cylinders telescopic cylinder - What is a Telescopic Cylinder?, Construction and Operation, Working of a Two-Stage Double-Acting Telescopic Cylinder

Tandem Cylinders - What is a Tandem Cylinder?, Construction and Operation, Dual Linear Actuator

double-rod and rodless cylinders - Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

cylinder mountings - Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

rotary actuators (or hydraulic motors) - Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

gear motors - Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

vane motors - Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

piston motors - Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

limited-rotation hydraulic motors - What are Limited-Rotation Hydraulic Motors?, Vane Type Limited-Rotation Motors

hydraulic motor performance - Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

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