Dnkslskf Flashcards
What are the two classifications of selector valves?
Open center
Closed center
What is the purpose of a selector valve?
To route hydraulic fluid along a couple of paths
What are the types of selector valves?
Plug or rotor Poppet Radial Spool Solenoid and piston
What is the purpose of a check valve?
To allow unrestricted flow in one direction, but restricted flow in the other
What is the purpose of a sequence valve?
To allow fluid flow to a component only at a particular time
What is the purpose of a hydraulic fuse ?
It shuts off flow due to an excess rate of flow due to an abnormal
Condition
What is the purpose of a line disconnect?
To prevent loss of fluid due to an abnormal condition
What is the purpose of a relief valve?
To relieve excess pressure
What does a bypass
Valve do?
Allows fluid flow to bypass a component in the event of an abnormal
Condition
Order the pressure settings of the valves
Thermal System relief Component relief Component bypass Pressure regulator
What is the purpose of an accumulator?
To gain the benefits of compressibility
So hydraulic fluid can be stored under a usable pressure
What are the special purposes of an accumulator?
To aid the pump by increasing fluid flow during high demand
To act as a shock absorber to dampen rapid changes in pressure
What is precharge?
1/2 1/3 system pressure
what are the types of accumulators?
Bladder
Diaphragm
Piston
What are the two ways to check precharge
High pressure gauge
System pressure gauge in cockpit
