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

flow control valves

Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

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Flow control valves are used to control the flow rate and hence to control the actuator speed.

FLOW CONTROL VALVES

• Flow control valves are used to control the flow rate and hence to control the actuator speed.

• The flow control valves use the following basic general symbols :

Orifice - Flow control valves unaffected by viscosity.

Throttle - Constitute resistance in a hydraulic system.

Rectangle - Indicates flow control valve.

Diagonal arrow - Indicates that the valve is adjustable.

• Table 7.5 presents the various standard symbols used for flow control valves. 

Table 7.5. Graphic symbols used for flow control valves



Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components : Tag: : Hydraulic Actuators and Control Components - Hydraulics and Pneumatics - flow control valves

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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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