Chapter 1.4: Types of Flow Control Valve

Question 1

what is the function of selector valve?

Answer 1

control the direction of movement of hydraulic actuator

provide simultaneous flow of hydraulic fluid both in & out of unit

Question 2

what does a check valve do?

Answer 2

allows fluid flow in one direction but prevents flow from the opposite

Question 3

what does an orifice check valve do?

Answer 3

allows full fluid flow in one direction but restricts flow from the opposite

Question 4

what does a sequence valve do?

Answer 4

control the sequence of operation of 2 different components

Question 5

types of sequence valves

Answer 5

mechanical and pressure controlled

Question 6

what does a priority valve do?

Answer 6

gives priority to the primary hydraulic subsystems over secondary systems when system pressure is low

Question 7

what does a shuttle valve do?

Answer 7

when there is more than one source to supply the fluid to operate components

Question 8

what does a hydraulic fuse do?

Answer 8

safety device that detects sudden increase in flow that passes through the fuse

once detected, it will close to stop leakage from upstream system

Question 9

2 types of selector valves

Answer 9

open & close centered