Chapter 10 Flashcards
1
Q
- Pressure reducing valves are always drained
A
Externally
2
Q
- If the vent connection of a relief valve is opened to tank, the pump is said to be
A
Unloaded
3
Q
- If operations take place in a certain order, they’re done in
A
Sequence
4
Q
- A sequence valve should contain a
A
Check valve
5
Q
- A back pressure valve is normally
A
Open
6
Q
- If flow from secondary to primary is required, the unloading valve control pressure should be _____ above the spring setting
A
150 psi
7
Q
- When used to support a load, the valve functions as a
A
Counterbalance valve
8
Q
- Pressure in the outlet part of an internally drained sequence valve adds to the _____ setting
A
Spring
9
Q
- Pressure reducing valves with internal check valves permit ____ free flow
A
Reverse
10
Q
- When the unloading valve is _____ operated, the spring force and pressure in the primary part are independent of each other
A
remotely
11
Q
- A brake valve is used to prevent
A
Both A and C
12
Q
- When a load is being accelerated, pressure is maximum at the motor
A
Inlet
13
Q
- A back pressure valve can also be used as a _____ valve
A
Unloading
14
Q
- A relief valve is normally
A
Closed
15
Q
- The point at which a relief valve first opens is called its _____ pressure
A
Cracking
