Chapter 8 & 9 Flashcards
1
Q
A DCV has a minimum of ____ ways?
A
2
2
Q
In it’s resting state a two way DCV is either?
A
Normally passing
Normally non-passing
3
Q
3 ways to retract a single acting cylinder
A
1) Pressure
2) Exhaust
3) Working port
4
Q
What is any restriction to flow?
A
Orifice
5
Q
What are the 2 types of orifices?
A
1) Adjustable
2) Fixed
6
Q
A _______ is an adjustable orifice
A
Flow control
7
Q
A common flow control used as an adjustable orifice is a _______.
A
Needle valve
8
Q
Flow control with bypass check valve is used to ______ & ______.
A
Meter in and meter out
9
Q
What are 4 ways to control a DCV?
A
1) Mechanical
2) Selenoid
3) Manual
4) Pilot pressure
