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H&P test 4


In a hydraulic or pneumatic system a control valve ____ from the compressor to the load directs and regulates fluid
What is the different between an infinite position valve and a finite position valve? Infinite: Finite: An infinite position valve can be anywhere between open and closed and can be used to modulate flow A finite position valve can be on or off and is used to allow flow or block flow
Describe the following ports p t a b r p- pressure supply t- tank a- to load b- from load r- exhaust/tank
Draw a 4-way 3 position valve [x][==][||]
Label the ports in question 4 a b [x][==][||] p r
draw a solenoid [/]
Name 3 types of control valves poppet valve spool valve rotary valve
What are two common voltages used to operate solenoids? 24v dc 120v ac
What is the purpose of a pilot operated valve? Using a small valve to operate a large hard to move valve
Draw a check valve -<o-
What is a shuttle valve? A type of valve which allows fluid to flow through it from one of two sources
What is a LVDT? Linear variable differential transformer
What is the purpose of a needle valve? Sets restricted flow to a valve
Created by: yo2sls