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

pressure-limiting valves (or relief valves)

Hydraulic Actuators and Control Components - Hydraulics and Pneumatics

The pressure-limiting valve, also known as the relief valve, is the protector of the hydraulic circuit.

PRESSURE-LIMITING VALVES (OR RELIEF VALVES)

1. What is a Pressure-Limiting Valve ?

The pressure-limiting valve, also known as the relief valve, is the protector of the hydraulic circuit.

A relief valve limits the maximum pressure that can be applied to the part of the system to which it is connected.

In other words, a relief valve protects a system from excessive fluid pressure over and above the design pressure limit.

Normally the pressure relief valve is located in between the pump and the actuator. Thus the relief valve protects the pump, the electric motor, and also other components of the circuit.

1. Types of Relief Valves

The two important types of pressure relief valves are :

1. Direct-acting or simple pressure relief valve, and

2. Pilot-operated or compound pressure relief valve.

Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components : Tag: : Hydraulic Actuators and Control Components - Hydraulics and Pneumatics - pressure-limiting valves (or relief valves)


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Hydraulics and Pneumatics

ME3492 4th semester Mechanical Dept | 2021 Regulation | 4th Semester Mechanical Dept 2021 Regulation