Title: Assignment: Lab 5 - Pressure Control Circuits
Course: Canvas Practice Course

LAP 5 - Pressure Control Circuits

Introduction:

This LAP will introduce two more in this family: sequence valves and pressure reducing valves. Both of these valves are commonly used.

Objectives:

- Describe the function of a pressure sequence valve and give an application.
- Describe the operation of a direct-acting sequence valve and give its schematic symbol.
- Describe the function of a bypass check valve in sequence valve circuit.
- Describe the operation of an integral check valve and give its schematic symbol.
- Describe the function of a two-sequence valve control circuit.
- Explain why a sequence valve is externally drained.
- Describe the function of a pressure reducing valve and give its schematic symbol.
- Describe the operation of a direct-acting PRV and give its schematic symbol.
- Describe the function of a PRV's bypass check valve
- Explain why a PRV is externally drained.

Materials and equipment:

1 ea. 85-BH Basic Hydraulic Training System

1 ea. 85-HPS Hydraulic Power Unit

1 ea. LAP 5 Book

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