1. A check valve is a/an:

  1. directional control valve
  2. counterbalance valve
  3. reducing valve

2. Pilot-operated check valves have ___________flow in one direction.

  1. increased
  2. controlled
  3. decreased

3. Pre-fill valves have ___________ flow at low pressure drop.

  1. higher
  2. less
  3. the same

4. Pre-fill valves are used to:

  1. make small cylinders move faster
  2. give large cylinders more force
  3. fill and empty large cylinders quickly

5. A plain check valve can be used as:

  1. pilot-operated relief valves
  2. direct-acting relief valves
  3. either type relief valve

6. A 2-way valve has:

  1. one working port
  2. two working ports
  3. three working ports

7. A 2-way valve can have:

  1. two positions
  2. three positions
  3. four positions

8. One 3-way valve can power a double acting cylinder in both directions.

  1. True
  2. False

9. A 4-way valve has:

  1. two working ports
  2. three working ports
  3. four working ports

10. A 5-way valve is normally used in:

  1. air circuits
  2. hydraulic circuits
  3. both air and hydraulic circuits

11. Direct solenoid-operated valves:

  1. are only DC current activated
  2. are only AC current activated
  3. operate off either AC or DC current

12. Solenoid pilot-operated valves must have at least___________pilot pressure minimum.

  1. 25 to 50 psi
  2. 50 to 75 psi
  3. 75 to 100 psi

13. The X port on a solenoid pilot-operated valve is for external___________.

  1. drain
  2. pilot pressure
  3. either drain or pilot pressure

14. The Y port on a solenoid pilot-operated valve is for external:

  1. drain
  2. pilot pressure
  3. either drain or pilot pressure

15. Stroke limiters on the working spool of a solenoid pilot-operated valve can:

  1. slow spool travel
  2. speed up spool travel
  3. control actuator speed

16. A D10-size valve can flow up to:

  1. 80 gpm
  2. 90 gpm
  3. 100 gpm

17. This symbol is for a:
  1. hydraulic solenoid pilot operator
  2. pneumatic solenoid pilot operator
  3. direct-acting operator


18. An open crossover (transition) valve blocks flow as it changes position.

  1. True
  2. False

19. Pneumatic directional control valves:

  1. are always subplate mounted
  2. are always in-line mounted
  3. may be subplate or in-line mounted

20. A series bar manifold can have as many as:

  1. one station
  2. two stations
  3. three stations