pneumatic symbols
DESCRIPTION
Pneumatic Symbols. For system diagrams and component identification. Standards. Actuators. Contents. Basic symbols. Valve symbol structure. Functional elements. Valve functions. Flowlines. Three position valves. Connections. Operators. Conditioners and plant. Port marking. - PowerPoint PPT PresentationTRANSCRIPT
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Pneumatic Symbols
For system diagrams and component identification
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Contents Standards Actuators
Click the section to advance directly to it
Basic symbols Functional elements Flowlines Connections Conditioners and plant Pressure regulators Relief valves
Valve symbol structure Valve functions Three position valves Operators Port marking Function components Symbol Library
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Graphic Symbols Standards Pneumatic symbols conform to and are devised
from the International Standard ISO 1219-1 1991 This covers graphical symbols for Fluid Power
Systems and Components Port markings for fluid power valves are not
covered by the ISO standard. These are taken from the recommendations of CETOP RP 68 P
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Basic Symbols
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Shapes These shapes and lines in the relative
proportions shown, make up a set of basic symbols from which fluid power symbols and circuits are constructed
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Basic Symbols (shapes) Symbol sets can be drawn to any size but their
scale and relative proportions are determined by a basic dimension of your choice “l”
Circles l energy conversion units
l3/4 measuring instrument
l1/3 mechanical link
l1/3 roller
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Basic Symbols (shapes)
Square at 45o
conditioning apparatusconnections to corners
Square control componentconnections perpendicular to sides
Rectangle cylinders and valves
l
l
l
> l
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Basic Symbols (shapes)
certain control methods, length between limits to suit
Rectangles
cushion
continuedpiston
max 2 l
min 1 l 1/2 l
l
1/4 l
1/4 l
1/2 l
1/2 l
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Basic Symbols
rotary actuator, motor or pump with limited angle of rotation
Semi-circle
mechanical connectionpiston rod, lever, shaft
Double line
Capsule pressurised reservoir air receiver, auxiliary gas bottle
l
1/5 l
2 ll
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Basic Symbols
Line Working line, pilot supply,return, electrical
Chain Enclosure of two or morefunctions in one unit
Dashed Pilot control, bleed, filter
Line Electrical line
1
2
3
12 10
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Functional Elements
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Functional Elements
Long sloping indicatesadjustability
Arrow1/3 l
size to suitSpring
Triangle Direction and nature of fluid,open pneumatic or filled hydraulic
1/4 l 1/2 l
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Functional Elements
Straight or slopingpath and flow direction, or motion
Arrows
Size to suitRestriction
Tee Closed path or port
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Functional Elements
90o angleSeating
rotary motionCurved arrows
clockwise from right hand endShaft rotationanti-clockwise from right hand endboth
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Functional Elements
Indication or controlsize to suit
Temperature
Operator Opposed solenoid windings
Prime mover M MElectric motor
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Flowlines and Connections
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Flowlines
not connectedCrossing
Junction Single
Hose usually connectingparts with relative movement
Flexibleline
Junction Four way junction
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Connections
ContinuousAir bleed
Air exhaust No means of connection
Temporary by probe
With means of connection
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Connections
Both to exhaustCoupling quick release
Coupling quick release self sealing
Source sealed
Coupling quick release self sealing
Both sealed
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Connections
Rotary connection one line
Rotary connection two lines
Rotary connection three lines
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Conditioners and Pressure Producing Plant
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Conditioners Water separator with manual drain
Water separator with automatic drain
Filter with manual drain
Filter with automatic drain
Lubricator
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Conditioners Dryer
Cooler with and without coolant flow lines
Heater
Combined heater / cooler
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Plant Compressor and electric
motor
Air receiver
Isolating valve
Air inlet filter
M
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Pressure Control
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Pressure regulators A pressure regulator symbol represents a normal state with the spring holding the
regulator valve open to connect the supply to the outlet.
The dotted line represents the feedback, this opposes the spring and can vary the flow through the valve from full flow, through shut off, to exhaust. The symbol is usually drawn in only this one state. The flow path can be imagined to hinge at the right hand end to first shut off the supply then connect to the exhaust.
Adjustable Regulator with pressure gauge simplified
Adjustable Regulator simplified
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Filter Regulator Lubricator
FRL Combined unit
FRL Simplified symbol
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Pressure relief valves A pressure relief valve symbol represents a normal state with the spring holding
the valve closed.
Adjustable relief valve simplified
The dotted line represents feed-forward, this opposes the spring and can be imagined to lift the flow path. When the pressure reaches an excess value the flow path will line up with the ports and flow air to relief.
Preset relief valve simplified
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Actuators
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Actuators Cylinders symbols can be
any length over “l” The piston and rod can be
shown in the retracted, extended or any intermediate position
“l”
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Single acting Single acting sprung instroked
Single acting sprung outstroked
Single acting sprung instroked magnetic *
Single acting sprung outstroked magnetic *
* ISO 1219-1 provides no example for magnetic cylinders
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Single acting without spring Single acting normally instroked external force
returns
Single acting normally outstroked external force returns
Single acting normally instroked magnetic external force returns
Single acting normally outstroked magnetic external force returns
Note: the hardware is usually double acting cylinders applied as single acting
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Double acting Double acting adjustable cushions
Double acting through rod
Double acting magnetic *
Double acting rodless *
* ISO 1219-1 provides no example for magnetic or rodless cylinders
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Rotary actuators Semi rotary double acting
Rotary motor single direction of rotation
Rotary motor bi-directional
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Simplified cylinder symbols Single acting load returns
Single acting spring returns
Double acting non cushioned
Double acting adjustable cushions
Double acting through rod
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Valve symbol structure
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Valve symbol structure The function of a valve is given by a pair of
numerals separated by a stroke, e.g. 3/2.. The first numeral indicates the number of main
ports. These are inlets, outlets and exhausts but excludes signal ports and external pilot feeds.
The second numeral indicates the number of states the valve can achieve.
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Valve symbol structure A 3/2 valve therefore has 3 ports (normally these
are inlet, outlet and exhaust) and 2 states (the normal state and the operated state)
The boxes are two pictures of the same valve
normaloperated
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Valve symbol structure A valve symbol shows the pictures for each of
the valve states joined end to end
normaloperated
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Valve symbol structure A valve symbol shows the pictures for each of
the valve states joined end to end
normaloperated
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Valve symbol structure The port connections are shown to only one of
the diagrams to indicate the prevailing state
normal
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Valve symbol structure The operator for a particular state is illustrated
against that state
Operated state produced bypushing a button
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Valve symbol structure The operator for a particular state is illustrated
against that state
Operated state produced bypushing a button
Normal state produced bya spring
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Valve symbol structure The operator for a particular state is illustrated
against that state
Operated state produced bypushing a button
Normal state produced bya spring
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Valve symbol structure The valve symbol can be visualised as moving to
align one state or another with the port connections
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Valve symbol structure The valve symbol can be visualised as moving to
align one state or another with the port connections
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Valve symbol structure The valve symbol can be visualised as moving to
align one state or another with the port connections
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Valve symbol structure A 5/2 valve symbol is constructed in a similar way. A
picture of the valve flow paths for each of the two states is shown by the two boxes. The 5 ports are normally an inlet, 2 outlets and 2 exhausts
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Valve symbol structure The full symbol is then made by joining the two
boxes and adding operators. The connections are shown against only the prevailing state
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Valve symbol structure The full symbol is then made by joining the two
boxes and adding operators. The connections are shown against only the prevailing state
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Valve symbol structure The full symbol is then made by joining the two
boxes and adding operators. The connections are shown against only the prevailing state
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Valve symbol structure The recommended spacing of the connections
1/4 l
1/4 l
1/2 l
1 l
1 /4 l
1/2 l
1/4 l
1/2 l
1/4 l
1/4 l
1/2 l
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Valve symbol structure The boxes can be joined at either end but the operator
must be drawn against the state that it produces. The boxes can also be flipped
A variety of symbol patterns are possible
normallyclosed
normallyopen
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Valve symbol structure The boxes can be joined at either end but the operator
must be drawn against the state that it produces. The boxes can also be flipped
A variety of symbol patterns can be produced
Reverse connected
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Valve functions
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Valve functions
Function 2/2
Function 3/2
Normal position
Basic valves beforeoperators are added
Examples, push button operatedwith spring return
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Valve functions
Function 2/2
Function 3/2
Operated position
Basic valves beforeoperators are added
Examples, push button operatedwith spring return
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Valve functions
Function 5/2
Function 4/2
Normal position
Basic valves beforeoperators are added
Examples, push button operatedwith spring return
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Valve functions
Function 5/2
Function 4/2
Operated position
Basic valves beforeoperators are added
Examples, push button operatedwith spring return
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Valve functions 5/3 Three position valves have a normal central
position that is set by springs or with a manual control such as a lever
The flow pattern in the centre position varies with the type. Three types will be considered
1, All ports sealed 2, Outlets to exhaust, supply sealed 3, Supply to both outlets, exhausts sealed
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Valves 5/3 All valves types shown in the normal position
Type 1. All ports sealed
Type 2. Outlets to exhaust
Type 3. Supply to outlets
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Valves 5/3 All valves types shown in the first operated position
Type 1. All ports sealed
Type 2. Outlets to exhaust
Type 3. Supply to outlets
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Valves 5/3 All valves types shown in the normal position
Type 1. All ports sealed
Type 2. Outlets to exhaust
Type 3. Supply to outlets
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Valves 5/3 All valves types shown in the second operated position
Type 1. All ports sealed
Type 2. Outlets to exhaust
Type 3. Supply to outlets
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Valves 5/3 All valves types shown in the normal position
Type 1. All ports sealed
Type 2. Outlets to exhaust
Type 3. Supply to outlets
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Operators
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Operators
General manual
Push button
Pull button
Push/pull button
Lever
Pedal
Treadle
Manual
Rotary knob
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OperatorsMechanical
Plunger
Spring normally as a return
Roller
Uni-direction or one way trip
Pressure
Pilot pressure
Differential pressure
Detent in 3 positions
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Operators
Solenoid direct
Solenoid pilot
Solenoid pilotwith manual overrideand integral pilot supply
Solenoid pilotwith manual override and external pilot supply
Electrical
When no integral or external pilot supply is shown it is assumed to be integral
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Port markings
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Port Markings
1
212 10
1
24
5 3
14 12
1
2
3
12 10
To CETOP RP68P
1
2 4
3
14 12
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Port Markings
1
212 10
1
24
5 3
14 12
1
2
3
12 10
1
2 4
3
14 12
To CETOP RP68P
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Port Markings
1
212 10
1
24
5 3
14 12
1
2
3
12 10
1
2 4
3
14 12
To CETOP RP68P
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Port Markings
1
212 10
1
24
5 3
14 12
1
2
3
12 10
1
2 4
3
14 12
To CETOP RP68P
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Port Markings
1
212 10
1
24
5 3
14 12
1
2
3
12 10
1
2 4
3
14 12
To CETOP RP68P
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Function components
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Function components Non-return valve simplified
Flow regulator uni-directional
Flow regulator bi-directional simplified
Note: The output can exhaust back and is not trapped
Two pressure ‘AND’ simplified
Shuttle valve ‘OR’ simplified
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Function components Quick exhaust valve with silencer simplified
Silencer
Pressure to electric switch preset
Pressure to electric switch adjustable
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Symbol Library
Actuators
Solenoid Valves
Valves
Air Line
Click the section arrow to go to it
Function Components
Vacuum
Electrical and electronic
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Symbol Library
Actuators
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Single acting cylinders
Sprung in
Sprung out
Magnetic sprung in
Magnetic sprung out
Magnetic sprung in non-rotating rod
Magnetic sprung out non-rotating rod
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Single acting cylinders
Sprung in adjustable cushion
Sprung out adjustable cushion
Magnetic sprung in adjustable cushion
Magnetic sprung out adjustable cushion
![Page 83: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/83.jpg)
Single acting cylinders
Sprung in adjustable cushion non-rotating rod
Sprung out adjustable cushion non-rotating rod
Magnetic sprung in adjustable cushion non-rotating rod
Magnetic sprung out adjustable cushion non-rotating rod
![Page 84: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/84.jpg)
Single acting bellows
Bellows single convolution
Bellows double convolution
Bellows triple convolution
![Page 85: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/85.jpg)
Double acting cylinders
Non-magnetic
Non-magnetic adjustable cushioned
Non-magnetic rod bellows
Magnetic hydraulic
Magnetic adjustable cushioned
Magnetic adjustable cushioned rod bellows
Magnetic
![Page 86: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/86.jpg)
Double acting cylinders
Non-rotating rod
Active brake
Passive brake
Magnetic non-rotating rod
Magnetic active brake
Magnetic passive brake
Guided rod magnetic
![Page 87: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/87.jpg)
Double acting cylinders
Non-magnetic through rod
Non-magnetic adjustable cushioned through rod
Magnetic through rod
Magnetic adjustable cushioned through rod
![Page 88: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/88.jpg)
Double acting cylinders
Three position adjustable cushions (equal strokes)
Three position adjustable cushions magnetic (equal strokes)
Four position adjustable cushions (unequal strokes)
Four position adjustable cushions magnetic (unequal strokes)
![Page 89: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/89.jpg)
Other actuators
With electronic analogue output of piston position
Slide unit
Semi-rotary actuator
Rotary motor bi-directional and non-reversible
![Page 90: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/90.jpg)
Rodless cylinders Cushioned Cushioned
magnetic
Cushioned passive brake
Cushioned magnetic passive brake
Cushioned active brake
Cushioned magnetic active brake
![Page 91: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/91.jpg)
Rodless cylinders Twin stroke
cushioned
Twin stroke cushioned magnetic
Twin stroke air through carriage
Twin stroke air through carriage magnetic
![Page 92: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/92.jpg)
Shock absorbers Self
adjusting
Adjustable
![Page 93: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/93.jpg)
End
![Page 94: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/94.jpg)
Symbol Library
Air Line Equipment
![Page 95: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/95.jpg)
Combination units
FRL with shut off valve and pressure gauge
Lubro-control unit
Filter and lubricator
![Page 96: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/96.jpg)
Combination units
Breathing air set
Filter regulator
Filter regulator with gauge
![Page 97: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/97.jpg)
Filters
Filter with manual drain
Filter with automatic drain
Filter with automatic drain and pressure drop indicator
![Page 98: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/98.jpg)
Pressure regulators
Pre-set relieving
Adjustable relieving
Adjustable relieving with pressure gauge
Pre-set relieving with pressure gauge
![Page 99: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/99.jpg)
Pressure regulators
Pilot operated
Pilot operated regulator controlled from pilot regulator
Pilot regulator with independent feedback
![Page 100: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/100.jpg)
Pressure regulators
Precision dual stage (11-818)
Proportional pressure valve 1
2
3
![Page 101: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/101.jpg)
Lubricator
Lubricator
![Page 102: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/102.jpg)
Pressure relief valves
Preset, no means of connection to exhaust
Adjustable, no means of connection to exhaust
Preset, tapped exhaust port
Pilot operated
Adjustable, tapped exhaust port
![Page 103: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/103.jpg)
Other components
Silencer
Water separator automatic drain
Filter silencer
![Page 104: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/104.jpg)
End
![Page 105: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/105.jpg)
Symbol Library
Electrical and Electronic
![Page 106: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/106.jpg)
Sensors
Reed switch 2 wire
Reed switch changeover
Reed switch 3 wire with led indicator (emulating current sinking npn device)
Reed switch 3 wire with led indicator (emulating current sourcing pnp device)
Reed switch 2 wire with led indicator
blue
brown +V
Load 0V
brown +V
blue black
0V 0V Load
Load
brown +Vblue 0V
Load0V black
brown +Vblue 0V
Load+V black
brown +V
blue Load 0V
Loads must be additionally suppressed
![Page 107: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/107.jpg)
Sensors
Solid state magnetic sensor pnp (current sourcing)
Solid state magnetic sensor plug in cable pnp (current sourcing)
Solid state magnetic sensor plug in cable npn (current sinking)
Solid state magnetic sensor npn (current sinking)
Solid state magnetic sensor with pulse extension
brown +Vblue 0V
blackpnp
Load 0V
13
4pnp
brown +Vblue 0V
black Load 0V
1
brown +V
blacknpn
Load +V
blue 0V
3
4npn
brown +Vblack Load +V
blue 0V
black Load 0V
brown +Vblue 0V
Loads must be additionally suppressed
![Page 108: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/108.jpg)
Sensors
Reed switch 2 wire with led indicator and plug in cable
Reed switch 2 wire with led indicator and plug in cable
1
+ brown
blue
1
4
brown +V
black Load 0V
Load 0V
Loads must be additionally suppressed
![Page 109: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/109.jpg)
Electrical Symbols
![Page 110: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/110.jpg)
Electrical symbols Direct current ( DC )
Alternating current ( AC )
AC or DC
Positive and negative polarity
Line to earth
Line to chassis
Cell
Battery 12 Vor
![Page 111: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/111.jpg)
Electrical Components
Relay contact General manual switch contact
Push button contact
Pull button contact
Twist switch contact
Roller switch contact
Delay to operate
Delay to reset
Normallyopen
Normallyclosed
Normallyopen
Normallyclosed
![Page 112: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/112.jpg)
Electrical Components Relay coil
Relay coil delay to operate contacts
Relay coil delay to reset contacts
Solenoid valve coil
![Page 113: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/113.jpg)
Electrical Components
Supply and return
Proximity switch
Touch sensitive switch
Pressure switch
Bell
Buzzer
Microphone
Loudspeaker
P
24V
0V
![Page 114: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/114.jpg)
Electronic Component Symbols
![Page 115: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/115.jpg)
Electronic Components Opto-isolator
Windings inductor inductor with core variable inductor transformer
Capacitors capacitor polarised
capacitor variable capacitor pre-set capacitor
Diodes diode zener diode light emitting diode
or
V
Resistors Resistor Variable Potentiometer Pre-set pot Voltage dependent Light dependent
![Page 116: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/116.jpg)
Electronic Components Thyristor
Photo-transistor
Triac
NPN Transistor
PNP Transistor
Fuse
Wires connected
Wires crossing
Double junction
or
or
![Page 117: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/117.jpg)
Electronic Components Conductors in
a cable
Meters for amps, volts, ohms & watts
Conductors twisted
Plug and socket
Coaxial plug and socket
Motors dc & ac
Generator
Lamp steady & flashing
Operational amplifier
MM
A
W
V
G
![Page 118: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/118.jpg)
End
![Page 119: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/119.jpg)
Symbol Library
Function Fittings and Components
![Page 120: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/120.jpg)
Function fittings
Blocking fitting1
212
1
2
1
2
Pressure reducing fitting
Pneumatic sensor fitting
![Page 121: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/121.jpg)
Function components
Air fuse
Non return valve
Non return valve
![Page 122: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/122.jpg)
Function components
bi-directional flow regulator
Exhaust flow regulator with and without silencer
Shuttle valve ‘OR’
Silencers
Two pressure valve ‘AND’ (will exhaust either signal back)
![Page 123: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/123.jpg)
Function components
Uni-directional flow regulator
Rotating joint
Quick exhaust valve with and without silencer
Pressure indicator
Pressure drop indicator
![Page 124: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/124.jpg)
Quick release couplings
Both sealed
Source sealed
Both to exhaust
made released
![Page 125: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/125.jpg)
End
![Page 126: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/126.jpg)
Symbol Library
Solenoid Valves
![Page 127: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/127.jpg)
Solenoid valves
Direct solenoid actuated spring return 2/2 NC
Direct solenoid actuated spring return 3/2 NC
Direct solenoid actuated spring return 3/2 NO
with man override on the solenoid
2
12 210
21012
210
12
13
1
2
3
1012
1
2
3
12 10
13
12 10
![Page 128: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/128.jpg)
Solenoid valves
Pilot solenoid actuated spring return 3/2 NC
Pilot solenoid actuated spring return 3/2 NO
Pilot solenoid actuated pilot solenoid return 1
2
3
12 10
1
2
3
1012
1
2
3
12 10
1
2
3
12 10
1
2
3
12 10
1
2
3
12 10
with man override on the solenoid
![Page 129: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/129.jpg)
Solenoid valves
1
24
5 3
14 12 Pilot solenoid actuated spring return, 5/2
Pilot solenoid actuated spring return and manual override, 5/2
Pilot solenoid actuated pilot solenoid return, 5/2
Pilot solenoid actuated pilot solenoid return and manual override, 5/2
1
24
5 3
14 12
1
24
5 3
14 12
1
24
5 3
14 12
![Page 130: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/130.jpg)
Solenoid valves
24 Pilot solenoid actuated
spring return, 5/2
Pilot solenoid actuated spring return and manual override, 5/2
Pilot solenoid actuated and returned, 5/2
Pilot solenoid actuated and returned with manual overrides, 5/2
15 3
14 12
1
24
5 3
14 12
24
15 3
14 12
1
24
5 3
14 12
Reverse piped
![Page 131: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/131.jpg)
Solenoid valves
Double pilot solenoid actuated spring to centre all ports sealed reverse piped
1
2
3
1012
1
24
5 3
14 12
Priority pilot solenoid actuated differential air return, 3/2
Priority pilot solenoid actuated differential air return, 5/2
1
24
5 3
14 12
![Page 132: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/132.jpg)
Solenoid valves Priority pilot solenoid
actuated differential air return, 3/2
Priority pilot solenoid actuated air spring return, 5/2
1
2
3
1012
24
15 3
14 12
1
2
3
1012
1
24
5 3
14 12 Priority pilot solenoid actuated differential air return, 5/2
Priority pilot solenoid actuated air spring return, 3/2
![Page 133: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/133.jpg)
Solenoid valves
Pilot solenoid actuated spring return, manual override, 5/2 with integral flow regulators
Double pilot solenoid actuated, manual override, 5/2 with integral flow regulators
1
24
5 3
14 12
1
24
5 3
14 12
![Page 134: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/134.jpg)
Solenoid valves
Double pilot solenoid actuated, spring to centre all ports sealed, 5/3 with integral flow regulators
Double pilot solenoid actuated, spring to centre supply port sealed, 5/3 with integral flow regulators
Double pilot solenoid actuated, spring to centre supply to outlets, 5/3 with integral flow regulators
1
24
5 3
14 12
1
24
5 3
14 12
1
24
5 3
14 12
![Page 135: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/135.jpg)
Proportional solenoid valves
Proportional flow to electrical signal
Proportional pressure to electrical signal
24
15 3
1
2
3
![Page 136: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/136.jpg)
Safety related valves
Monitored dump valve1
2
3
1012
Soft start valve
1
2
3
12
10
![Page 137: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/137.jpg)
End
![Page 138: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/138.jpg)
Symbol Library
Valves
![Page 139: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/139.jpg)
Valves un-tapped exhaust Plunger actuated spring
return 3/2
Rotary knob actuated detented 3/2
Key actuated detented 3/2
1
2
3
12 10
1
2
3
12 10
1
2
3
12 10
1
2
3
12 10
1
2
3
12 10
Push button actuated spring return 3/2
Roller actuated spring return 3/2
Toggle actuated detented 3/2
1
2
3
12 10
![Page 140: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/140.jpg)
Valves integral bleed supply Plunger / bleed actuated
air return 3/2
Antenna / bleed actuated air return 3/2
One way trip / bleed actuated air return 3/2
Roller / bleed actuated air return 3/2
Low pressure / bleed actuated air return 3/2
212 10
13
212 10
13
212 10
13
212 10
13
212 10
13
![Page 141: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/141.jpg)
Valves external bleed supply Plunger / bleed actuated
air return 3/2
Antenna / bleed actuated air return 3/2
2
One way trip / bleed actuated air return 3/2
Roller / bleed actuated air return 3/2
Low pressure / bleed actuated air return 3/2
212 10
31
212 10
31
12 10
31
212 10
31
212 10
31
![Page 142: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/142.jpg)
Pilot actuated valves
Pilot actuated spring return 2/2
Pilot actuated spring return 3/2
Differential pilot actuated 3/2
1
2
3
12 10
21012
1
12 210
1
NC NO
2
13
12 10
1
2
3
12 102
13
12 10 Double pilot actuated 3/2
2
13
12 10
1
2
3
12 10
![Page 143: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/143.jpg)
Pilot actuated valves
Pressure or vacuum actuated spring return 2/2 (diaphragm valve)
Low pressure pilot actuated spring return 3/2
Low pressure pilot actuated and returned, 3/2
NC NO
Low pressure pilot actuated pilot return, 3/2
1
2
3
1210
2
13
1210
2
13
12 10
1
2
3
12 10
2
13
12 10
1
2
3
12 102
13
12 10
1
2
3
12 10
![Page 144: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/144.jpg)
Pilot actuated valves
Remote pressure bleed actuated spring return, NC, 3/2
Remote pressure bleed actuated spring return, NO, 3/2
Remote pressure bleed actuated spring return, 5/2
1
2
3
12 1012 2
10
1
12 210
1 1
24
5 3
14 12
2
13
12 1012 2
10
1
![Page 145: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/145.jpg)
Pilot actuated valves
Pilot actuated spring return, 4/2
Pilot actuated spring return, 5/2
Double pilot actuated 5/2
24 Differential pilot actuated 5/2
1
2 4
3
14 12
15 3
14 12
1
24
5 3
14 12
1
24
5 3
14 12
![Page 146: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/146.jpg)
Pilot actuated valves
Pressure or vacuum actuated spring return, 5/2 (diaphragm valve)
Low pressure pilot actuated spring return, 5/2
Low pressure pilot actuated and returned, 5/2
Low pressure pilot actuated pilot return, 5/2
1
24
5 3
1412
1
24
5 3
14 12
1
24
5 3
14 12
1
24
5 3
14 12
![Page 147: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/147.jpg)
Pilot actuated valves
Double pilot actuated spring to centre all ports sealed
Double pilot actuated spring to centre supply port sealed
Double pilot actuated spring to centre supply to outlets
1
24
5 3
1
24
5 3
1
24
5 3
![Page 148: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/148.jpg)
Mechanically actuated valves
Plunger actuated spring return 2/2
Plunger actuated spring return 3/2
Plunger actuated air reset 3/2
NC NO
2
13
12 10
12 210
1
1
2
3
12 10
21012
1
1
2
3
12 102
13
12 10
![Page 149: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/149.jpg)
Mechanically actuated valves
Plunger actuated spring return, 4/2
Plunger actuated spring return, 5/2
Plunger actuated air reset 5/2
1
24
5 3
14 12
1
2 4
3
14 12
1
24
5 3
14 12
![Page 150: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/150.jpg)
Mechanically actuated valves
Roller actuated spring return 2/2
Roller actuated spring return 3/2
Roller actuated air reset 3/2
2
NC NO
2
13
12 10
13
12 10
2
13
12 10
1
2
3
12 10
12 210
1
21012
1
![Page 151: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/151.jpg)
Mechanically actuated valves
Roller actuated spring return, 4/2
Roller actuated spring return, 5/2
Roller actuated air reset 5/2
1
24
5 3
14 12
1
2 4
3
14 12
1
24
5 3
14 12
![Page 152: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/152.jpg)
Mechanically actuated valves
One way trip actuated spring return 2/2
One way trip actuated spring return 3/2
One way trip actuated air reset 3/2
NC NO
1
2
3
12 102
13
12 10
12 210
1
21012
1
1
2
3
12 102
13
12 10
![Page 153: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/153.jpg)
Mechanically actuated valves
One way trip actuated spring return, 4/2
One way trip actuated spring return, 5/2
One way trip actuated air reset 5/2
1
24
5 3
14 12
1
2 4
3
14 12
1
24
5 3
14 12
![Page 154: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/154.jpg)
Manually actuated valves
Push button actuated spring return 2/2
Push button actuated spring return 3/2
Push button actuated air reset 3/2
NC NO
21012
1
12 210
1
2
13
12 10
1
2
3
12 10
1
2
3
12 102
13
12 10
![Page 155: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/155.jpg)
Manually actuated valves
Push button actuated spring return, 4/2
Push button actuated spring return, 5/2
Push button actuated air reset 5/2
1
24
5 3
14 12
1
2 4
3
14 12
1
24
5 3
14 12
![Page 156: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/156.jpg)
Manually actuated valves
Lever actuated spring return 2/2
Lever actuated spring return 3/2
Lever actuated air reset 3/2
NC NO
12
210
1
2
1312
10
1
2
312
10
210
121
1
2
312
1012
2
13
10
![Page 157: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/157.jpg)
Manually actuated valves
Lever actuated spring return, 4/2
Lever actuated spring return, 5/2
Lever actuated air reset 5/2 1
24
5 314
12
1
24
5 314
12
1
2 4
314
12
![Page 158: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/158.jpg)
Manually actuated valves
Lever actuated lever return, variable throttling, 4/2
Lever actuated lever return, variable throttling, detented, 4/2
Rotary knob actuated and returned, variable throttling, 4/2
14
2 4
1 3
12
142 4
1 3
12
2 412
1 3
14
![Page 159: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/159.jpg)
Manually actuated valves
Lever actuated spring to centre all ports sealed
Lever actuated spring to centre supply port sealed
Lever actuated spring to centre supply to outlets
1
24
5 3
1
24
5 3
1
24
5 3
14 12
14 12
14 12
![Page 160: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/160.jpg)
Manually actuated valves
Lever actuated, detented, all ports sealed centre
Lever actuated, detented, supply port sealed centre
Lever actuated, detented, supply to outlets centre 1
24
5 3
14
12
1
24
5 3
14
12
1
24
5 3
14
12
![Page 161: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/161.jpg)
Manually actuated valvesNC NO
Pedal actuated spring return 3/2
Treadle actuated detented 3/2
1
2
3
12
10
2
13
12
10
1
2
3
1210
2
13
1210
![Page 162: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/162.jpg)
Manually actuated valves
Pedal actuated spring return, 4/2
Pedal actuated spring return, 5/2
Treadle actuated detented 5/2
1
2 4
3
1412
1
24
5 3
1412
1
24
5 3
1412
![Page 163: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/163.jpg)
Manually actuated valves
Treadle actuated spring to centre all ports sealed
Treadle actuated spring to centre supply port sealed
1
24
5 3
14 12
1
24
5 3
14 12
![Page 164: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/164.jpg)
Manually actuated valves
Treadle actuated, detented, all ports sealed centre
Treadle actuated, detented, supply port sealed centre
1
24
5 3
1
24
5 3
14
12
14
12
![Page 165: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/165.jpg)
Manually actuated valves
Push button actuated rotary manual return 3/2
Push button actuated key return 3/2
Push actuated pull or air returned 3/2
1
2
3
12 10
1
2
3
12 10 Push actuated pull returned 3/2
1
2
3
12 10
1
2
3
12 10
![Page 166: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/166.jpg)
Safety related valves
Monitored dump valve1
2
3
1012
Emergency stop valve
Soft start valve
1
2
3
12
10
1
2
3
12 10
![Page 167: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/167.jpg)
Special purpose valves
Impulse generator 1
2
3
![Page 168: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/168.jpg)
End
![Page 169: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/169.jpg)
Symbol Library
Vacuum Equipment
![Page 170: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/170.jpg)
Vacuum equipment
Vacuum generator
Vacuum cups
Vacuum switch pneumatic 1
2
3
2
13
NONC
![Page 171: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/171.jpg)
Vacuum equipment
Vacuum switch electric, normally open and normally closed
Vacuum transducer with analog and switched outputs npn
Vacuum transducer with analog and switched outputs pnp
V dcAnalog outSwitch out 0 V
+V dc supply (brown)Analog out (white)Switch out (black)0 V (blue) Load
+V dc supply (brown)Analog out (white)Switch out (black)0 V (blue) Load
V dcAnalog outSwitch out 0 V
![Page 172: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/172.jpg)
Vacuum equipment
Vacuum filter
Vacuum silencer
Vacuum gauge
![Page 173: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/173.jpg)
End
![Page 174: Pneumatic Symbols](https://reader033.vdocuments.us/reader033/viewer/2022050621/56815d82550346895dcb8f26/html5/thumbnails/174.jpg)
End