403 - Chapter 8 Flashcards
1
Q
Fluid direction is controlled by:
A
Poppet (piston or ball)
Rotary Spool
Sliding Spool
2
Q
DCV are classified by:
A
Type of internal valving element Methods of actuation Number of flow paths Size Connections
3
Q
Check Valves
A
In-line check valve
Right angle check valve
Restictive check valve
Pilot operated check valve
4
Q
Two types of Pilot operated check valves:
A
Pilot-to-Open
Pilot-to-Close
5
Q
Spool Positions
A
Spring Centered
Spring Offset
Detented
6
Q
Spool Center Conditions
A
Closed Center
Open Center
Float Center
Tandem Center
7
Q
Types of Actuators
A
Manual or Lever Mechanical Pneumatic Hydraulic Electrical Solenoid
