403 - Chapter 8

Question 1

Fluid direction is controlled by:

Answer 1

Poppet (piston or ball)
Rotary Spool
Sliding Spool

Question 2

DCV are classified by:

Answer 2

Type of internal valving element
Methods of actuation
Number of flow paths
Size
Connections

Question 3

Check Valves

Answer 3

In-line check valve
Right angle check valve
Restictive check valve
Pilot operated check valve

Question 4

Two types of Pilot operated check valves:

Answer 4

Pilot-to-Open

Pilot-to-Close

Question 5

Spool Positions

Answer 5

Spring Centered
Spring Offset
Detented

Question 6

Spool Center Conditions

Answer 6

Closed Center
Open Center
Float Center
Tandem Center

Question 7

Types of Actuators

Answer 7

Manual or Lever
Mechanical
Pneumatic
Hydraulic
Electrical
Solenoid