Lesson 5: Hydraulic Valves Flashcards
What are the 2 types of valves?
Flow and Pressure
This type of valve selects the route of flow
Flow Valve
Purpose of SELECTOR valves?
determines the direction of fluid flow
Poppet, rotary, spool, are all types of what?
Selector Valve
If fluid does not pass through the valve when OFF what type is it?
Closed Centre
Poppet selector valves are controlled by what?
CAMS
This type of selector valve has a cylinder inside that rotates
ROTARY
This selector valve uses a piston and is used for flight controls/landing gear/autopilot
SPOOL
What are the 2 types of check valves?
Inline Integral
Purpose of restrictors?
reduce fluid flow by reducing passage area
This type of valve is similar to a check valve but follows a series of events
Sequence Valve
Similar to pressure activated sequence valves except that they are used to ensure essential systems are given priority over non-essential systems
Priority Valves
Purpose of quick disconnect valves?
maintenance suction lines
Purpose of FUSES
prevent loss of fluid DOWNSTREAM
2 types of fuses?
Pressure drop Volume
2 ways of resetting a fuse?
manually bleed off self reset