Pneumatic Schematics Using Graphic Symbols to Illustrate Basic Circuit Designs

Pneumatic SchematicsUsing Graphic Symbols to

Illustrate Basic Circuit Designs

3/2 Solenoid Valve

Regulator

Pneumatic Components

Single Acting Pull Type Cylinder and Speed Valve

Pneumatic Component

Symbols

3/2 Solenoid Valve

Regulator

Single Acting Pull Type Cylinder and Speed Valve

The Symbols Can Be Arranged to Illustrate Complete Circuits

Double Acting Cylinder

HPA Storage Bottle

Regulator4/2 Valve

HP Gage

LP Gage

A B

PEA EB

5/2 Solenoid ValveNote: The center port with the brass One Touch Fitting is the supply or pressure port.

5/2 Solenoid ValveSymbol

Solenoid

Valve Body

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

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)

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

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 Exhaust

Ports. P is the Gas Supply

Port

Hopefully the Hieroglyphics of Pneumatics are More Understandable

Double Acting Cylinder

HPA Storage Bottle

Regulator4/2 Valve

HP Gage

LP Gage

Watch the 2 Position Valve and Double Acting Cylinder

EAEB P

AB

A B

PEA EB

5/2 Valve5 Ports 2 Positions

5/3 Valve5 Ports 3 Positions

Can You Explain the Difference?

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

Mini Pneumatic CircuitsPressurized Storage Bottle

Regulator

3/2 Valves

Pneumatic Cylinders with Speed Valves

Pneumatic SchematicsThe Best Way to Learn Them,

Is to Draw Them….Try It.