Post on 04-Apr-2018
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Pneumatic Schematics
Using Graphic Symbols to
Illustrate Basic Circuit Designs
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3/2 Solenoid
Valve
Regulator
Pneumatic Components
Single Acting Pull Type Cylinder
and Speed Valve
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Pneumatic Component
Symbols
3/2 Solenoid
Valve
Regulator
Single Acting Pull Type
Cylinder and Speed Valve
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The Symbols Can Be Arranged to
Illustrate Complete Circuits
Double Acting
Cylinder
HPA
Storage
Bottle
Regulator4/2 Valve
HP Gage
LP Gage
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A B
PEA EB
5/2 Solenoid Valve
Note: The center portwith the brass One
Touch Fitting is the
supply or pressure
port.
5/2 Solenoid ValveSymbol
Solenoid
Valve Body
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5/3 Solenoid ValveUsed on Double Acting Cylinders
The Solenoid Operates Like a Linear Pneumatic Motor
1.) Wire coil (red) is energized
2.) The electromagnetic field,
draws the iron armature (blue)
into the solenoid
3.) The valve spool (green)
moves with the iron
armatureSolenoid
Valve Spool
Springs return
valve spool to
rest position
AB
PEB EA
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A B
PEA EB
5/2 Solenoid ValveUsed on Double Acting Cylinders
5 Ports, 2 Positions
The 2 Dark Blocks Represent the
Two Possible Valve Positions
Solenoid
At Rest
Position
Solenoid
Energized
Position
B Pressurized : A Exhausted (rest)
A Pressurized : B Exhausted (energized)
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A B
PEA EB
5/2 Solenoid ValveUsed on Double Acting Cylinders
5 Ports, 2 Positions
Return Spring Symbol
Indicates the At Rest Position
Actuator Symbol with a
Diagonal Line Indicates
Solenoid Operation
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A B
PEA EB
5/2 Solenoid ValveUsed on Double Acting Cylinders
5 Ports, 2 Positions
Letters A and B Indicate the
Output Port Connections for
the Pneumatic Actuators
(Cylinders)
The Arrow Symbols
Indicate the Direction of
Gas Flow Through the
Valve
EA and EB
are ExhaustPorts. P is the
Gas Supply
Port
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Hopefully the Hieroglyphics of
Pneumatics are More Understandable
Double Acting
Cylinder
HPA
Storage
Bottle
Regulator4/2 Valve
HP Gage
LP Gage
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Watch the 2 Position Valve and
Double Acting Cylinder
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EAEB P
AB
A B
PEA EB
5/2 Valve
5 Ports 2 Positions
5/3 Valve5 Ports 3 Positions
Can You Explain the Difference?
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Pictorial Drawing of a 5/3 Valve and
Double Acting Cylinder
PEB EA
ABNote: At Rest, Ports A and
B are Exhausted P is
Closed
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Mini Pneumatic CircuitsPressurized Storage Bottle
Regulator
3/2
Valves
Pneumatic Cylinders
with Speed Valves
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Pneumatic Schematics
The Best Way to Learn Them, Is
to Draw Them.Try It.