Pressure Control Valves Flashcards
What are the 4 valves discussed in this chapter?
1) Relief valve
2) Sequence valve
3) Counterbalance valve
4) Pressure reducing valve
Which valve is designed to allow one operation to happen before another?
Sequence valve
Which 2 valves have the pilot on the pressure side of the valve?
1) Sequence valve
2) Relief valve
What purpose does a bypass check serve in a sequence valve?
It allows the cylinder to retract
Which 3 valves are normally non-passing?
1) Counterbalance
2) Relief valve
3) Sequence valve
Which valve counteracts heavy weight on a cylinder?
Counterbalance valve
Which valve limits system pressure?
Relief valve
What PSI is preferred when setting a relief valve?
200 PSI over system pressure
When setting a relief valve where do you attach the hose and pressure gauge?
1
What is the point at which a relief valve begins to open and flow back to tank?
Cracking pressure
Which valve reduces pressure downstream from the valve?
Pressure reducing valve
Which valve in this chapter is the only valve that is normally passing?
Pressure reducing valve
Which 2 valves have pilots on the downstream side of the valve?
1) Counterbalance valve
2) Pressure reducing valve
Which valve has a bleed to tank?
Sequence valve
How do you set a Counterbalance valve?
Turn handle counterclockwise until cylinder stops. Then turn one more half turn.
