Eaton Ch 8

Question 1

Directional valves control the ______ of fluid flow

Direction
Pressure
Blocking
Reducing

Answer 1

Direction

Question 2

Directional valves that shift to definite positions are sometimes referred to as ____\ positioning valves

Course
Finite
Six way
Vacuum

Answer 2

Finite

Question 3

A simple_______ valve permits fluid flow in one direction and blocks flow in the reverse direction

Spool
Compound
Check
Vacuum

Answer 3

Check

Question 4

Check valves containing heavier Springs than nominal 5 psi are often used as simple______ valves

Relief
Globe
Radial
Spool

Answer 4

Relief

Question 5

Directional valves are used to reverse a cylinder or motor are usually_____ ______ valves

One way
Two-way
Three-way
Four-way

Answer 5

Four-way

Question 6

Directional control valves maybe shifted____

Mechanically
Electrically
Hydraulically
All of the above

Answer 6

All of the above

Question 7

A solenoid operated spring offset valve has___ finite positions

One
Two
Four
Six

Answer 7

Two

Question 8

An integral part of a prefill valve that prevents hydraulic shock is a ____ ____

Decompression valve
Pilot choke
Adjustable orifice
Stroke limiter

Answer 8

Decompression valve 

Question 9

Pilot pressure for a solenoid controlled pilot operated directional valve may be supplied _______

Internally
Externally
Manually
Both A and B

Answer 9

Both A and B 

Question 10

The device that can be added to a solenoid controlled pilot operated valve to control the rate of Main spool shift is called a[n]

Open choke
Pilot Choke
Valve controller
Oil controller

Answer 10

Pilot choke 

Question 11

When large valves spools are shifted hydraulically, pilot pistons are sometimes used to obtain_______ shift times

Faster
Slower
Medium
All of the above

Answer 11

Faster 

Question 12

The adjustable orifice deceleration valve provides an external adjustment to utilize full spool travel, regardless of ____ _____ through the valve
Pressure rate
Power rate
Flow rate
All of the above

Answer 12

Flow rate

Question 13

A simple, kind of flow control that restricts the distance a spool can shift is
Spool option
Spool stop
Stroke, limiter
Stroke Choke

Answer 13

Stroke limiter

Question 14

Line mounted directional spool valves are more frequently found in _____ applications

Industrial
European
ISO
Mobile

Answer 14

Mobile

Question 15

Is the graphic symbol for a two position four way control valve

True
False 

Answer 15

False 

Question 16

At which flow rate does a tapered plunger design valve loose control?
Low
High
Free
Reverse

Answer 16

Low

Question 17

The type of valve that allows load creep is a _____ _____ valve

Window orifice
Tapered plunger
Rotary cap
Free interlock

Answer 17

?? Window orifice??
Pg 208 para 8-10

Question 18

A valve that slows a drill head from fast advance to feed speed is a _____ valve

Rotary
Limiter
Deceleration
Two stage

Answer 18

Deceleration

Question 19

Valves that use atmospheric pressure to push large volumes of fluid through them are ___ valves

Direct-acting
Return
Neutral
Prefill

Answer 19

Prefill

Question 20

Which of the following is not an actuator category?
Electrical
Directional
Pneumatic
Manual

Answer 20

Directional