Millwright Level 3 Pneumatics -study notes for
pneumatic test | Questions with 100% Correct
Answers | Verified | Latest Update 2026
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Terms in this set (109)
How does a regulator in a pneumatic increases orfice size to increase air flow
system respond to a decrease of
downstream air pressure?
Which type of directional control two-way valve
valve is an on-off valve in a
pneumatic system?
Where should the air intake be in the coolest place possible
located?
what is an air receivers purpose? to compensate for fluctuations in demand, and to
dampen pulsations.
what things must every air receiver Gauge, drain, and pressure relief valve
have?
what must the pressure relief valve must be no higher then the lowest maximum
be set at? pressure rating of any part in the system.
how should safety relief valves be vertically, usually on top, to prevent dirt and sludge
mounted, and why? from blocking them.
, what are the three types of the grid(dead end) system, decentralized
commonly used pipe systems? system(unit system) and Loop system
what is the preferred or the loop system
recommended piping system?
Describe the Grid(dead end) system its the simplest, only requires one compressor,
of piping. starts with a large diameter supply line that
gradually decreases. one drawback is that systems
at the end of the circuit could face air starvation
when upstream demand is heavy.
Describe the decentralized system composed of two or more compressors each with
their own grid. grids may or may not be
interconnected. advantage is each compressor is
close to its point of use which means there is less
pressure drop and more uniform supply pressure.
Describe the loop system of piping? Two or more compressors feed into the same loop
allowing compressed air to flow in either direction.
ensures equal air distribution throughout the plant.
Flared fittings are not used where? where vibration is present.
what normally open valve is installed excess flow valve
on hoses to prevent whipping in the
event of fitting or hose failure?
what are two methods of sealing a packed bore - o-rings are fixed in grooves in the
pneumatic DCV (Directional control body through which the spool slides.
valves)? Packed spool - o-rings are fixed in the spool.
pneumatic test | Questions with 100% Correct
Answers | Verified | Latest Update 2026
Save
Terms in this set (109)
How does a regulator in a pneumatic increases orfice size to increase air flow
system respond to a decrease of
downstream air pressure?
Which type of directional control two-way valve
valve is an on-off valve in a
pneumatic system?
Where should the air intake be in the coolest place possible
located?
what is an air receivers purpose? to compensate for fluctuations in demand, and to
dampen pulsations.
what things must every air receiver Gauge, drain, and pressure relief valve
have?
what must the pressure relief valve must be no higher then the lowest maximum
be set at? pressure rating of any part in the system.
how should safety relief valves be vertically, usually on top, to prevent dirt and sludge
mounted, and why? from blocking them.
, what are the three types of the grid(dead end) system, decentralized
commonly used pipe systems? system(unit system) and Loop system
what is the preferred or the loop system
recommended piping system?
Describe the Grid(dead end) system its the simplest, only requires one compressor,
of piping. starts with a large diameter supply line that
gradually decreases. one drawback is that systems
at the end of the circuit could face air starvation
when upstream demand is heavy.
Describe the decentralized system composed of two or more compressors each with
their own grid. grids may or may not be
interconnected. advantage is each compressor is
close to its point of use which means there is less
pressure drop and more uniform supply pressure.
Describe the loop system of piping? Two or more compressors feed into the same loop
allowing compressed air to flow in either direction.
ensures equal air distribution throughout the plant.
Flared fittings are not used where? where vibration is present.
what normally open valve is installed excess flow valve
on hoses to prevent whipping in the
event of fitting or hose failure?
what are two methods of sealing a packed bore - o-rings are fixed in grooves in the
pneumatic DCV (Directional control body through which the spool slides.
valves)? Packed spool - o-rings are fixed in the spool.
