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Valves 2

Media Type -

CBTs / CD-ROMs

Summary -

This unit is designed to familiarize trainees with the functions performed by various types of valves in hydraulic systems. After completing this unit, trainees should be able to describe how valves control flow rate, flow direction, and pressure in a hydraulic system. They should be able to describe the basic operation of a pressure-compensated flow control valve, a temperature-compensated flow control valve, various types of flow control circuits, a pressure reducing valve, a relief valve, a sequence valve, and a counterbalance valve.

Subject(s) -

Hydraulics Training

Description -

O B J E C T I V E S

Flow and Directional Control

Describe what a non-adjustable orifice is and what it does.
List three factors that affect throttled flow through a valve.
Describe how a pressure-compensated flow control valve works.
Describe how a temperature-compensated flow control valve works.
Identify three different flow control circuits.
Describe a bleed-off circuit and how it is used.
Describe a meter-in circuit and how it is used.
Describe a meter-out circuit and how it is used.
Explain how a directional control sliding spool valve controls fluid direction in a hydraulic system.

Pressure Control

Explain what a pressure reducing valve does and how it works.
Explain what a relief valve does and how it works.
Explain what a sequence valve does and how it works.
Explain what a counterbalance valve does and how it works.

S U B J E C T S

Flow and Directional Control

Flow Control Valves
Flow Control Circuits
Directional Control

Pressure Control

Pressure Reduction and Relief
Sequencing and Counterbalancing