Training Applications for the Electrical Controls Industry
Fluid Power Test 4
Hydraulic Control Valves
Fluid Power Review - Section 4
00:00:00
Question 1: The valves used to control the flow of fluid between a hydraulic pump or air compressor and the actuating device can be grouped into three classifications. They are:
flow control valves
directional control valves
pressure control valves
by-pass valves
Question 2: Directional control valves are used to route the flow of fluid and to start and stop the flow without affecting the flow rate.
True
False
Question 3: Directional control valves that start or stop the flow of fluid have 2-way action. This may include ______________, ___________ or _____________..
needle valves
shut off valves
shuttle valves
check valves
Question 4: The action of a poppet is a simple 4-way action, open and close, or in some cases a 3-way action of opening one orifice and closing another.
True
False
Question 5: Needle valves, unlike flow control valves will meter flow in both directions.
True
False
Question 6: The function of pressure control valves is to limit the minimum pressure in either a pump line or a branch circuit line.
True
False
Question 7: The symbol shown here is a _____________.
flow control valves
check valve
pressure relief valve
by-pass valves
Question 8: The symbol shown here is a _____________.
gate valve
check valve
pressure relief valve
by-pass valve
Question 9: When the use of a pressure activated device such as a pressure switch is needed to activate another process, _______________ control is used.
meter-out
complex relay system
meter-in
a PLC
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That's not quite right! Correct answer to this question is:
flow control valves
directional control valves
pressure control valves
That’s Right!
That's not quite right! It is Truethat the directional control valves are used to route the flow of fluid and to start and stop the flow without affecting the flow rate.
That’s right!
That's not quite right! The answer is ...
shut off valves
shuttle valves
check valves
That’s right!
That's not quite right! It is False A poppet is 1 way.
That’s right!
That's not quite right! Correct answer to this question is: True
That’s right!
That's not quite right! It is False. A pressure control valve limits maximum pressure, not minimum.
That’s right!
That's not quite right! The answer was
check valve
That’s right!
That's not quite right! The answer is ...
gate valve
That’s right!
That's not quite right! If you will remember back in section 3 where we covered this, the answer is
meter-in
That’s right!
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