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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.

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pneumatic symbols
Pneumatic Symbols

For system diagrams and component identification

contents
Standards

Actuators

Contents
  • Basic symbols
  • Valve symbol structure
  • Functional elements
  • Valve functions
  • Flowlines
  • Three position valves
  • Connections
  • Operators
  • Conditioners and plant
  • Port marking
  • Pressure regulators
  • Function components
  • Relief valves
  • Symbol Library

Click the section to advance directly to it

graphic symbols standards
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
shapes
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
basic symbols shapes

Circles

energy conversion units

l

l

measuring instrument

3/4

mechanical link

l

1/3

roller

l

1/3

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”
basic symbols shapes1

l

Square

control component

connections perpendicular to sides

l

conditioning apparatus

connections to corners

Square at

45o

> l

l

Rectangle

cylinders and valves

Basic Symbols (shapes)
basic symbols shapes2

1/4l

Rectangles

piston

l

continued

1/4l

cushion

1/2l

min 1 l

certain control methods, length between limits to suit

1/2l

1/2l

max 2l

Basic Symbols (shapes)
basic symbols

rotary actuator, motor or pump with limited angle of rotation

l

Semi-circle

2l

pressurised reservoir air receiver, auxiliary gas bottle

Capsule

l

mechanical connection

piston rod, lever, shaft

Double line

1/5 l

Basic Symbols
basic symbols1

2

12

10

Working line, pilot supply,

return, electrical

Line

3

1

Dashed

Pilot control, bleed, filter

Chain

Enclosure of two or more

functions in one unit

Line

Electrical line

Basic Symbols
functional elements

1/2l

1/4l

Triangle

Direction and nature of fluid,

open pneumatic or filled

hydraulic

Spring

size to suit

Arrow

Long sloping indicates

adjustability

1/3l

Functional Elements
functional elements1

Arrows

Straight or sloping

path and flow direction, or motion

Tee

Closed path or port

Restriction

Size to suit

Functional Elements
functional elements2

Curved arrows

rotary motion

Shaft rotation

clockwise from right hand end

anti-clockwise from right hand end

both

Seating

90o angle

Functional Elements
functional elements3

Temperature

Indication or control

size to suit

Operator

Opposed solenoid windings

M

Prime mover

Electric motor

M

Functional Elements
flowlines

Junction

Single

Junction

Four way junction

not connected

Crossing

Hose usually connecting

parts with relative movement

Flexible

line

Flowlines
connections

Air bleed

Continuous

Temporary by probe

Air exhaust

No means of connection

With means of connection

Connections
connections1

Coupling quick release

Both to exhaust

Coupling quick release self sealing

Source sealed

Coupling quick release self sealing

Both sealed

Connections
connections2

Rotary connection one line

Rotary connection two lines

Rotary connection three lines

Connections
conditioners

Water separator with automatic drain

  • Filter with manual drain
  • Filter with automatic drain
  • Lubricator
Conditioners
  • Water separator with manual drain
plant

M

  • Air receiver
  • Isolating valve
  • Air inlet filter
Plant
  • Compressor and electric motor
pressure regulators
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 simplified
  • Adjustable Regulator with pressure gauge simplified
pressure relief valves
Pressure relief valves
  • A pressure relief valve symbol represents a normal state with the spring holding the valve closed.
  • 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.
  • Adjustable relief valve simplified
  • Preset relief valve simplified
actuators

“l”

Actuators
  • Cylinders symbols can be any length over “l”
  • The piston and rod can be shown in the retracted, extended or any intermediate position
single acting

Single acting sprung outstroked

  • Single acting sprung instroked magnetic *
  • Single acting sprung outstroked magnetic *

* ISO 1219-1 provides no example for magnetic cylinders

Single acting
  • Single acting sprung instroked
single acting without spring
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

double acting
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

rotary actuators
Rotary actuators
  • Semi rotary double acting
  • Rotary motor single direction of rotation
  • Rotary motor bi-directional
simplified cylinder symbols
Simplified cylinder symbols
  • Single acting load returns
  • Single acting spring returns
  • Double acting non cushioned
  • Double acting adjustable cushions
  • Double acting through rod
valve symbol structure
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.
valve symbol structure1
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

operated

normal

valve symbol structure2
Valve symbol structure
  • A valve symbol shows the pictures for each of the valve states joined end to end

operated

normal

valve symbol structure3
Valve symbol structure
  • A valve symbol shows the pictures for each of the valve states joined end to end

operated

normal

valve symbol structure4
Valve symbol structure
  • The port connections are shown to only one of the diagrams to indicate the prevailing state

normal

valve symbol structure5
Valve symbol structure
  • The operator for a particular state is illustrated against that state

Operated state

produced by

pushing a button

valve symbol structure6
Valve symbol structure
  • The operator for a particular state is illustrated against that state

Operated state

produced by

pushing a button

Normal state

produced by

a spring

valve symbol structure7
Valve symbol structure
  • The operator for a particular state is illustrated against that state

Operated state

produced by

pushing a button

Normal state

produced by

a spring

valve symbol structure8
Valve symbol structure
  • The valve symbol can be visualised as moving to align one state or another with the port connections
valve symbol structure9
Valve symbol structure
  • The valve symbol can be visualised as moving to align one state or another with the port connections
valve symbol structure10
Valve symbol structure
  • The valve symbol can be visualised as moving to align one state or another with the port connections
valve symbol structure11
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
valve symbol structure12
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
valve symbol structure13
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
valve symbol structure14
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
valve symbol structure15

1 /4l

1/4l

1/4l

1l

1/4l

1/2l

1/4l

1/2l

1/2l

1/2l

1/4l

Valve symbol structure
  • The recommended spacing of the connections
valve symbol structure16
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

normally

closed

normally

open

valve symbol structure17
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

valve functions1
Valve functions

Basic valves before

operators are added

Examples, push button operated

with spring return

Normal position

Function 2/2

Function 3/2

valve functions2
Valve functions

Basic valves before

operators are added

Examples, push button operated

with spring return

Operated position

Function 2/2

Function 3/2

valve functions3
Valve functions

Basic valves before

operators are added

Examples, push button operated

with spring return

Normal position

Function 4/2

Function 5/2

valve functions4
Valve functions

Basic valves before

operators are added

Examples, push button operated

with spring return

Operated position

Function 4/2

Function 5/2

valve functions 5 3
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
valves 5 3
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
valves 5 31
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
valves 5 32
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
valves 5 33
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
valves 5 34
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
operators1
Operators

Manual

General manual

Lever

Push button

Pedal

Pull button

Treadle

Push/pull button

Rotary knob

operators2
Operators

Mechanical

Plunger

Pressure

Spring normally as a return

Pilot pressure

Roller

Differential pressure

Uni-direction or one way trip

Detent in 3 positions

operators3
Operators

Electrical

Solenoid direct

Solenoid pilot

with manual override and external pilot supply

Solenoid pilot

When no integral or external pilot supply is shown it is assumed to be integral

Solenoid pilot

with manual override

and integral pilot supply

port markings1

2

12

10

3

1

Port Markings

To CETOP RP68P

2

12

10

1

2

4

4

2

14

12

14

12

1

3

1

5

3

port markings2
Port Markings

To CETOP RP68P

2

2

12

10

12

10

3

1

1

2

4

4

2

14

12

14

12

1

3

1

5

3

port markings3

2

12

10

3

1

Port Markings

To CETOP RP68P

2

12

10

1

2

4

4

2

14

12

14

12

1

3

1

5

3

port markings4

2

12

10

3

1

Port Markings

To CETOP RP68P

2

12

10

1

2

4

4

2

14

12

14

12

1

3

1

5

3

port markings5

2

12

10

3

1

Port Markings

To CETOP RP68P

2

12

10

1

2

4

4

2

14

12

14

12

1

3

1

5

3

function components1
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
function components2
Function components
  • Quick exhaust valve with silencer simplified
  • Silencer
  • Pressure to electric switch preset
  • Pressure to electric switch adjustable
symbol library
ActuatorsSymbol Library
  • Function Components
  • Solenoid Valves
  • Vacuum
  • Valves
  • Electrical and electronic
  • Air Line

Click the section arrow to go to it

single acting cylinders
Single acting cylinders
  • Magnetic sprung in non-rotating rod
  • Sprung out
  • Magnetic sprung out non-rotating rod
  • Magnetic sprung in
  • Magnetic sprung out

Sprung in

single acting cylinders1
Single acting cylinders
  • Sprung out adjustable cushion
  • Magnetic sprung in adjustable cushion
  • Magnetic sprung out adjustable cushion

Sprung in adjustable cushion

single acting cylinders2
Single acting cylinders
  • Sprung out adjustable cushion non-rotating rod
  • Magnetic sprung in adjustable cushion non-rotating rod
  • Magnetic sprung out adjustable cushion non-rotating rod

Sprung in adjustable cushion non-rotating rod

single acting bellows
Single acting bellows
  • Bellows double convolution
  • Bellows triple convolution

Bellows single convolution

double acting cylinders
Double acting cylinders
  • Magnetic hydraulic
  • Non-magnetic
  • Non-magnetic adjustable cushioned
  • Magnetic adjustable cushioned
  • Non-magnetic rod bellows
  • Magnetic adjustable cushioned rod bellows
  • Magnetic
double acting cylinders1
Double acting cylinders
  • Non-rotating rod
  • Magnetic non-rotating rod
  • Active brake
  • Magnetic active brake
  • Passive brake
  • Magnetic passive brake
  • Guided rod magnetic
double acting cylinders2
Double acting cylinders
  • Non-magnetic through rod
  • Non-magnetic adjustable cushioned through rod
  • Magnetic through rod
  • Magnetic adjustable cushioned through rod
double acting cylinders3
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)
other actuators
Other actuators
  • With electronic analogue output of piston position
  • Slide unit
  • Semi-rotary actuator
  • Rotary motor bi-directional and non-reversible
rodless cylinders
Rodless cylinders
  • Cushioned magnetic
  • Cushioned
  • Cushioned magnetic passive brake
  • Cushioned passive brake
  • Cushioned magnetic active brake
  • Cushioned active brake
rodless cylinders1
Rodless cylinders
  • Twin stroke air through carriage
  • Twin stroke cushioned
  • Twin stroke cushioned magnetic
  • Twin stroke air through carriage magnetic
shock absorbers
Shock absorbers
  • Self adjusting
  • Adjustable
symbol library2

Symbol Library

Air Line Equipment

combination units
Combination units
  • FRL with shut off valve and pressure gauge
  • Lubro-control unit
  • Filter and lubricator
combination units1
Combination units
  • Breathing air set
  • Filter regulator
  • Filter regulator with gauge
filters
Filters
  • Filter with manual drain
  • Filter with automatic drain
  • Filter with automatic drain and pressure drop indicator
pressure regulators1
Pressure regulators
  • Pre-set relieving
  • Pre-set relieving with pressure gauge
  • Adjustable relieving
  • Adjustable relieving with pressure gauge
pressure regulators2
Pressure regulators
  • Pilot operated
  • Pilot regulator with independent feedback
  • Pilot operated regulator controlled from pilot regulator
pressure regulators3

2

3

1

Pressure regulators
  • Precision dual stage (11-818)
  • Proportional pressure valve
lubricator
Lubricator
  • Lubricator
pressure relief valves1
Pressure relief valves
  • Preset, no means of connection to exhaust
  • Preset, tapped exhaust port
  • Adjustable, no means of connection to exhaust
  • Adjustable, tapped exhaust port
  • Pilot operated
other components
Other components
  • Silencer
  • Filter silencer
  • Water separator automatic drain
symbol library3

Symbol Library

Electrical and Electronic

sensors

brown +V

Load

black

0V

Load

blue

0V

Load

brown +V

brown +V

blue 0V

Load

black

0V

blue 0V

brown +V

Load

black

+V

brown +V

blue

0V

Load

Sensors

Loads must be additionally suppressed

blue

0V

  • Reed switch 2 wire
  • Reed switch changeover
  • Reed switch 3 wire with led indicator (emulating current sourcing pnp device)
  • Reed switch 3 wire with led indicator (emulating current sinking npn device)
  • Reed switch 2 wire with led indicator
sensors1

brown +V

blue 0V

pnp

black

0V

Load

1

brown +V

3

blue 0V

pnp

4

black

0V

Load

blue 0V

brown +V

npn

black

+V

Load

blue 0V

3

brown +V

npn

4

black

+V

Load

brown +V

blue 0V

Sensors

Loads must be additionally suppressed

  • Solid state magnetic sensor pnp (current sourcing)
  • Solid state magnetic sensor plug in cable pnp (current sourcing)
  • Solid state magnetic sensor npn (current sinking)

1

  • Solid state magnetic sensor plug in cable npn (current sinking)
  • Solid state magnetic sensor with pulse extension

black

0V

Load

sensors2

0V

Load

0V

Load

Sensors

Loads must be additionally suppressed

1

brown +V

4

black

  • 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

electrical symbols1
Direct current ( DC )

or

12 V

Electrical symbols
  • Line to earth
  • Alternating current ( AC )
  • Line to chassis
  • AC or DC
  • Cell
  • Positive and negative polarity
  • Battery
electrical components
Relay contact

General manual switch contact

Normally

open

Normally

closed

Normally

open

Normally

closed

Electrical Components
  • Push button contact
  • Roller switch contact
  • Delay to operate
  • Pull button contact
  • Twist switch contact
  • Delay to reset
electrical components1
Relay coilElectrical Components
  • Relay coil delay to operate contacts
  • Relay coil delay to reset contacts
  • Solenoid valve coil
electrical components2
Supply and return

P

24V

0V

Electrical Components
  • Proximity switch
  • Bell
  • Touch sensitive switch
  • Buzzer
  • Pressure switch
  • Microphone
  • Loudspeaker
electronic components
Opto-isolator

Resistors

Resistor

Variable

Potentiometer

Pre-set pot

Voltage dependent

Light dependent

or

Electronic Components
  • Windings
    • inductor
    • inductor with core
    • variable inductor
    • transformer

V

  • Capacitors
    • capacitor
    • polarised capacitor
    • variable capacitor
    • pre-set capacitor
  • Diodes
    • diode
    • zener diode
    • light emitting diode
electronic components1
Thyristor

Photo-transistor

or

or

Electronic Components
  • Fuse
  • Triac
  • Wires connected
  • NPN Transistor
  • Wires crossing
  • PNP Transistor
  • Double junction
electronic components2
Conductors in a cable

Meters for amps, volts, ohms & watts

A

V

W

Electronic Components
  • Motors dc & ac

M

M

  • Conductors twisted
  • Generator

G

  • Plug and socket
  • Lamp steady & flashing
  • Coaxial plug and socket
  • Operational amplifier
symbol library4

Symbol Library

Function Fittings and Components

function fittings

2

12

1

2

1

1

2

Function fittings
  • Blocking fitting
  • Pressure reducing fitting
  • Pneumatic sensor fitting
function components3
Function components
  • Air fuse
  • Non return valve
  • Non return valve
function components4
Function components
  • bi-directional flow regulator
  • Exhaust flow regulator with and without silencer
  • Silencers
  • Shuttle valve ‘OR’
  • Two pressure valve ‘AND’ (will exhaust either signal back)
function components5
Function components
  • Uni-directional flow regulator
  • Quick exhaust valve with and without silencer
  • Rotating joint
  • Pressure indicator
  • Pressure drop indicator
quick release couplings
Quick release couplings

released

made

  • Both to exhaust
  • Source sealed
  • Both sealed
symbol library5

Symbol Library

Solenoid Valves

solenoid valves

2

12

2

12

10

10

12

2

12

10

10

3

1

3

1

2

12

2

12

10

10

3

1

3

1

Solenoid valves

with man override

on the solenoid

  • Direct solenoid actuated spring return 2/2 NC

2

  • Direct solenoid actuated spring return 3/2 NC
  • Direct solenoid actuated spring return 3/2 NO
solenoid valves1

2

2

12

10

12

10

3

1

3

1

2

2

12

10

12

10

3

1

3

1

2

2

12

10

12

10

3

1

3

1

Solenoid valves

with man override

on the solenoid

  • Pilot solenoid actuated spring return 3/2 NC
  • Pilot solenoid actuated spring return 3/2 NO
  • Pilot solenoid actuated pilot solenoid return
solenoid valves2

4

2

14

12

5

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

Solenoid valves
  • 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
solenoid valves3

14

12

5

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

14

12

5

1

3

Solenoid valves

Reverse piped

4

2

  • Pilot solenoid actuated spring return, 5/2
  • Pilot solenoid actuated spring return and manual override, 5/2
  • Pilot solenoid actuated and returned, 5/2

4

2

  • Pilot solenoid actuated and returned with manual overrides, 5/2
solenoid valves4

14

12

4

2

5

1

3

2

12

10

3

1

4

2

14

12

5

1

3

Solenoid valves
  • Double pilot solenoid actuated spring to centre all ports sealed reverse piped
  • Priority pilot solenoid actuated differential air return, 3/2
  • Priority pilot solenoid actuated differential air return, 5/2
solenoid valves5

2

12

10

3

1

4

2

14

12

5

1

3

2

12

10

3

1

4

2

14

12

5

1

3

Solenoid valves
  • Priority pilot solenoid actuated differential air return, 3/2
  • Priority pilot solenoid actuated differential air return, 5/2
  • Priority pilot solenoid actuated air spring return, 3/2
  • Priority pilot solenoid actuated air spring return, 5/2
solenoid valves6

4

2

14

12

5

1

3

4

2

14

12

5

1

3

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
solenoid valves7

14

12

4

2

5

1

3

14

12

4

2

5

1

3

14

12

4

2

5

1

3

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
proportional solenoid valves

4

2

5

1

3

2

3

1

Proportional solenoid valves
  • Proportional flow to electrical signal
  • Proportional pressure to electrical signal
safety related valves

12

2

10

3

1

2

12

10

3

1

Safety related valves
  • Monitored dump valve
  • Soft start valve
valves un tapped exhaust

2

12

10

3

1

Valves un-tapped exhaust

2

12

10

  • Plunger actuated spring return 3/2

3

1

2

  • Roller actuated spring return 3/2

12

10

3

1

  • Push button actuated spring return 3/2

2

  • Toggle actuated detented 3/2

12

10

3

1

2

  • Rotary knob actuated detented 3/2

12

10

3

1

2

12

10

  • Key actuated detented 3/2

3

1

valves integral bleed supply

2

12

10

3

2

1

12

10

3

1

2

12

10

3

1

2

12

10

3

1

2

12

10

3

1

Valves integral bleed supply
  • Plunger / bleed actuated air return 3/2
  • Roller / bleed actuated air return 3/2
  • One way trip / bleed actuated air return 3/2
  • Low pressure / bleed actuated air return 3/2
  • Antenna / bleed actuated air return 3/2
valves external bleed supply

2

12

10

3

1

12

10

3

2

1

12

10

3

1

12

10

3

2

1

12

10

3

1

Valves external bleed supply
  • Plunger / bleed actuated air return 3/2

2

  • Roller / bleed actuated air return 3/2
  • One way trip / bleed actuated air return 3/2

2

  • Low pressure / bleed actuated air return 3/2
  • Antenna / bleed actuated air return 3/2
pilot actuated valves

2

12

10

3

1

Pilot actuated valves

NC

NO

2

12

2

12

10

10

  • Pilot actuated spring return 2/2

1

1

2

2

  • Pilot actuated spring return 3/2

12

12

10

10

3

1

3

1

2

2

  • Double pilot actuated 3/2

12

12

10

10

3

1

3

1

2

  • Differential pilot actuated 3/2

12

10

3

1

pilot actuated valves1

12

2

12

2

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

Pilot actuated valves

NC

NO

  • Pressure or vacuum actuated spring return 2/2 (diaphragm valve)
  • Low pressure pilot actuated spring return 3/2
  • Low pressure pilot actuated pilot return, 3/2
  • Low pressure pilot actuated and returned, 3/2
pilot actuated valves2

12

2

2

12

10

10

3

1

1

12

2

2

12

10

10

3

1

1

4

2

12

2

14

12

10

1

5

1

3

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
pilot actuated valves3

2

4

14

12

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

14

12

5

1

3

Pilot actuated valves
  • Pilot actuated spring return, 4/2
  • Pilot actuated spring return, 5/2
  • Double pilot actuated 5/2

4

2

  • Differential pilot actuated 5/2
pilot actuated valves4

4

2

14

12

5

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

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 pilot return, 5/2
  • Low pressure pilot actuated and returned, 5/2
pilot actuated valves5

4

2

5

1

3

Pilot actuated valves
  • Double pilot actuated spring to centre all ports sealed

4

2

  • Double pilot actuated spring to centre supply port sealed

5

1

3

4

2

  • Double pilot actuated spring to centre supply to outlets

5

1

3

mechanically actuated valves

2

12

2

12

10

10

1

1

2

12

12

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

Mechanically actuated valves

NC

NO

  • Plunger actuated spring return 2/2

2

  • Plunger actuated spring return 3/2
  • Plunger actuated air reset 3/2
mechanically actuated valves1

2

4

14

12

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

Mechanically actuated valves
  • Plunger actuated spring return, 4/2
  • Plunger actuated spring return, 5/2
  • Plunger actuated air reset 5/2
mechanically actuated valves2

2

12

2

12

10

10

1

1

12

12

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

Mechanically actuated valves

NC

NO

  • Roller actuated spring return 2/2

2

2

  • Roller actuated spring return 3/2
  • Roller actuated air reset 3/2
mechanically actuated valves3

2

4

14

12

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

Mechanically actuated valves
  • Roller actuated spring return, 4/2
  • Roller actuated spring return, 5/2
  • Roller actuated air reset 5/2
mechanically actuated valves4

2

12

2

12

10

10

1

1

2

2

12

12

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

Mechanically actuated valves

NC

NO

  • One way trip actuated spring return 2/2
  • One way trip actuated spring return 3/2
  • One way trip actuated air reset 3/2
mechanically actuated valves5

1

Mechanically actuated valves

2

4

14

12

  • One way trip actuated spring return, 4/2

1

3

4

2

14

12

  • One way trip actuated spring return, 5/2

5

3

4

2

14

12

  • One way trip actuated air reset 5/2

5

1

3

manually actuated valves

2

12

2

12

10

10

1

1

2

2

12

12

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

Manually actuated valves

NC

NO

  • Push button actuated spring return 2/2
  • Push button actuated spring return 3/2
  • Push button actuated air reset 3/2
manually actuated valves1

2

4

14

12

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

Manually actuated valves
  • Push button actuated spring return, 4/2
  • Push button actuated spring return, 5/2
  • Push button actuated air reset 5/2
manually actuated valves2

2

2

10

10

12

12

1

1

2

2

10

10

12

12

3

1

3

1

2

2

10

10

12

12

3

1

3

1

Manually actuated valves

NC

NO

  • Lever actuated spring return 2/2
  • Lever actuated spring return 3/2
  • Lever actuated air reset 3/2
manually actuated valves3

2

4

12

14

1

3

4

2

12

14

5

1

3

Manually actuated valves
  • Lever actuated spring return, 4/2
  • Lever actuated spring return, 5/2

4

2

12

  • Lever actuated air reset 5/2

14

5

1

3

manually actuated valves4

2

4

12

14

1

3

2

4

12

14

1

3

2

4

14

12

1

3

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
manually actuated valves5

14

12

14

12

14

12

Manually actuated valves

4

2

  • Lever actuated spring to centre all ports sealed

5

1

3

4

2

  • Lever actuated spring to centre supply port sealed

5

1

3

4

2

  • Lever actuated spring to centre supply to outlets

5

1

3

manually actuated valves6

14

4

2

12

5

1

3

14

4

2

12

5

1

3

14

4

2

12

5

1

3

Manually actuated valves
  • Lever actuated, detented, all ports sealed centre
  • Lever actuated, detented, supply port sealed centre
  • Lever actuated, detented, supply to outlets centre
manually actuated valves7

2

12

12

10

10

3

1

3

1

2

2

12

12

10

10

3

1

3

1

Manually actuated valves

NC

NO

2

  • Pedal actuated spring return 3/2
  • Treadle actuated detented 3/2
manually actuated valves8

2

4

14

12

1

3

4

2

14

12

5

1

3

4

2

14

12

5

1

3

Manually actuated valves
  • Pedal actuated spring return, 4/2
  • Pedal actuated spring return, 5/2
  • Treadle actuated detented 5/2
manually actuated valves9

14

12

4

2

5

1

3

14

12

4

2

5

1

3

Manually actuated valves
  • Treadle actuated spring to centre all ports sealed
  • Treadle actuated spring to centre supply port sealed
manually actuated valves10

14

12

14

12

Manually actuated valves

4

2

  • Treadle actuated, detented, all ports sealed centre

5

1

3

4

2

  • Treadle actuated, detented, supply port sealed centre

5

1

3

manually actuated valves11

2

12

10

3

1

2

12

10

3

1

2

12

10

3

1

Manually actuated valves
  • Push button actuated rotary manual return 3/2

2

  • Push button actuated key return 3/2

12

10

3

1

  • Push actuated pull returned 3/2
  • Push actuated pull or air returned 3/2
safety related valves1

12

2

10

3

1

2

12

10

3

1

2

12

10

3

1

Safety related valves
  • Monitored dump valve
  • Emergency stop valve
  • Soft start valve
special purpose valves

2

3

1

Special purpose valves
  • Impulse generator
symbol library7

Symbol Library

Vacuum Equipment

vacuum equipment

2

2

3

1

3

1

Vacuum equipment
  • Vacuum generator
  • Vacuum cups

NC

NO

  • Vacuum switch pneumatic
vacuum equipment1

V dc

Analog out

Switch out

0 V

V dc

Analog out

Switch out

0 V

Vacuum equipment
  • Vacuum switch electric, normally open and normally closed

+V dc supply (brown)

Analog out (white)

Switch out (black)

0 V (blue)

  • Vacuum transducer with analog and switched outputs npn

Load

+V dc supply (brown)

Analog out (white)

Switch out (black)

0 V (blue)

  • Vacuum transducer with analog and switched outputs pnp

Load

vacuum equipment2
Vacuum equipment
  • Vacuum filter
  • Vacuum silencer
  • Vacuum gauge
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