chapter10 pneumatics symbols

8/10/2019 Chapter10 Pneumatics Symbols

1/177

Pneumatic Symbols

For system diagrams and component

identification


2/177

Contents

Standards Actuators

Click the section to advance directly to it

Basic symbols

Functional elements

Flow lines

Connections Conditioners and plant

Pressure regulators

Relief valves

Valve symbol structure

Valve functions

Three position valves

Operators Port marking

Function components

Symbol Library


3/177

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 Systemsand 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


4/177

Basic Symbols


5/177

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


6/177

Basic Symbols (shapes) Symbol sets can be drawn to any size but their scale and

relative proportions are determined by a basic dimensionof your choice l

Circles l energy conversion units

l3/4 measuring instrument

l1/3 mechanical link

l1/3 roller


7/177

Basic Symbols (shapes)

Square at

45o

conditioning apparatus

connections to corners

Square control componentconnections

perpendicular to sides

Rectangle cylinders and valves

l

l

l

> l


8/177

Basic Symbols (shapes)

certain controlmethods, length

between limits to

suit

Rectangles

cushion

continued

piston

max 2l

min 1l

1/2l

l

1/4l

1/4l

1/2

l

1/2l


9/177

Basic Symbols

rotary actuator, motor

or pump with limited

angle of rotation

Semi-circle

mechanical connection

piston rod, lever, shaftDouble line

Capsule pressurised reservoirair receiver, auxiliary

gas bottle

l

1/5l

2

l

l


10/177

Basic Symbols

Line Working line, pilot supply,return, electrical

Chain Enclosure of two or more

functions in one unit

Dashed Pilot control, bleed, filter

Line Electrical line

1

2

3

12 10


11/177


12/177

Functional Elements


13/177

Functional Elements

Long sloping indicates

adjustabilityArrow

1/3l

size to suitSpring

Triangle Direction and nature of fluid,open pneumatic or filled

hydraulic

1/4l1/2l


14/177

Functional Elements

Straight or sloping

path and flow

direction, or motion

Arrows

Size to suitRestriction

Tee Closed path or port


15/177

Functional Elements

90oangleSeating

rotary motionCurved arrows

clockwise from right hand endShaft rotation

anti-clockwise from right hand end

both


16/177

Functional Elements

Indication or control

size to suitTemperature

Operator Opposed solenoidwindings

Prime mover M MElectric motor


17/177

Flowlines and Connections


18/177

Flowlines

not connectedCrossing

Junction Single

Hose usually connecting

parts with relative movementFlexible

line

JunctionFour way junction


19/177

Connections

ContinuousAir bleed

Air exhaust No means ofconnection

Temporary by probe

With means of

connection


20/177

Connections

Both to exhaustCoupling quick

release

Coupling quick

release self sealing

Source sealed

Coupling quickrelease self sealing

Both sealed


21/177

Connections

Rotary connection one

line

Rotary connection two

lines

Rotary connectionthree lines


22/177

Conditioners and PressureProducing Plant


23/177

Conditioners Water separator with manual drain

Water separator with

automatic drain

Filter with manual drain

Filter with automatic drain

Lubricator


24/177

Conditioners Dryer

Cooler with and withoutcoolant flow lines

Heater

Combined heater / cooler


25/177

Plant Compressor and electric motor

Air receiver

Isolating valve

Air inlet filter

M


26/177

Pressure Control


27/177

Pressure regulators A pressure regulator symbol represents a normalstate with the spring holding the regulator valve

open to connect the supply to the outlet. The dotted line represents the feedback, this opposes thespring and can vary the flow through the valve from full

flow, through shut off, to exhaust. The symbol is usuallydrawn 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


28/177

Filter Regulator Lubricator

FRL Combined unit

FRL Simplified symbol


29/177

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 flowpath will line up with the ports and flow air to relief.

Preset relief valve

simplified


30/177


31/177

Actuators


32/177

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


33/177

Single acting Single acting sprung

instroked

Single acting sprung

outstroked

Single acting sprung

instroked magnetic*

Single acting sprungoutstroked magnetic *

* ISO 1219-1 provides no example for magnetic cylinders


34/177

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 outstrokedmagnetic external force returns

Note: the hardware is usually double acting cylinders applied as single acting


35/177

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


36/177

Rotary actuators

Semi rotary double

acting

Rotary motor single

direction of rotation

Rotary motor bi-

directional


37/177

Simplified cylinder symbols

Single acting load returns

Single acting spring

returns

Double acting non

cushioned

Double acting adjustable

cushions

Double acting

through rod


38/177


39/177

Valve symbol structure


40/177

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.


41/177

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 operatedstate)

The boxes are two pictures of the same

valve

normaloperated


42/177

Valve symbol structure A valve symbol shows the pictures for each

of the valve states joined end to end

normaloperated


43/177

Valve symbol structure A valve symbol shows the pictures for each

of the valve states joined end to end

normaloperated


44/177

Valve symbol structure The port connections are shown to only one

of the diagrams to indicate the prevailing

state

normal


45/177

Valve symbol structure The operator for a particular state is

illustrated against that state

Operated state

produced by

pushing a button


46/177



Operated state

produced by

pushing a button

Normal state

produced by

a spring


47/177



Operated state

produced by

pushing a button

Normal state

produced by

a spring


48/177

Valve symbol structure The valve symbol can be visualised as

moving to align one state or another with

the port connections


49/177





50/177





51/177

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 bythe two boxes. The 5 ports are normally an

inlet, 2 outlets and 2 exhausts


52/177

Valve symbol structure The full symbol is then made by joining the

two boxes and adding operators. The

connections are shown against only theprevailing state


53/177





54/177





55/177


56/177

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 beflipped

A variety of symbol patterns are possible

normallyclosed

normallyopen


57/177

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 beflipped

A variety of symbol patterns can be

produced

Reverse connected


58/177

Valve functions


59/177

Valve functions

Function 2/2

Function 3/2

Normal position

Basic valves beforeoperators are added

Examples, push button operatedwith spring return


60/177

Valve functions

Function 2/2

Function 3/2

Operated position




61/177

Valve functions

Function 5/2

Function 4/2

Normal position




62/177

Valve functions

Function 5/2

Function 4/2

Operated position




63/177

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 Su l to both outlets exhausts sealed


64/177

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


65/177

Valves 5/3

All valves types shown in the first operated position





66/177

Valves 5/3

All valves types shown in the normal position





67/177

Valves 5/3

All valves types shown in the second operated position





68/177


69/177

Operators


70/177

OperatorsGeneral manual

Push button

Pull button

Push/pull button

Lever

Pedal

Treadle

Manual

Rotary knob


71/177

OperatorsMechanicalPlunger

Spring normallyas a return

Roller

Uni-direction

or one way trip

Pressure

Pilot pressure

Differential pressure

Detent in 3 positions


72/177

OperatorsSolenoid

direct

Solenoid pilot

Solenoid pilot

with manual override

and integral pilotsupply

Solenoid pilot

with manual

override and

external pilot

supply

Electrical

When no integral

or external pilot

supply is shown it

is assumed to beintegral


73/177

Port markings


74/177

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


75/177

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


76/177


77/177

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


78/177

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


79/177

Function components


80/177

Function components Non-return valvesimplified 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


81/177

Function components Quick exhaust valvewith silencersimplified Silencer

Pressure to electric

switch preset

Pressure to electric

switch adjustable


82/177

Symbol Library Actuators

Solenoid Valves

Valves

Air Line

Click the section arrow to go to it

Function Components

Vacuum

Electrical and

electronic


83/177

Symbol Library

Actuators


84/177

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


85/177


Sprung in

adjustable

cushion

Sprung out

adjustable cushion

Magnetic sprung in

adjustable cushion

Magnetic sprung out

adjustable cushion


86/177


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


87/177

Single acting bellows

Bellows single

convolution Bellows doubleconvolution

Bellows triple

convolution


88/177

Double acting cylinders Non-magnetic

Non-magnetic

adjustable

cushioned

Non-magnetic

rod bellows

Magnetic

hydraulic

Magnetic

adjustable

cushioned

Magnetic

adjustable

cushionedrod bellows

Magnetic


89/177

Double acting cylinders Non-rotating rod

Active

brake

Passive

brake

Magnetic

non-

rotating rod

Magnetic

active brake

Magnetic

passive

brake

Guided

rod

magnetic


90/177

Double acting cylinders Non-magnetic throughrod

Non-magnetic adjustable

cushioned through rod

Magnetic

through rod

Magnetic adjustable

cushioned through rod


91/177

Double acting cylinders Three position adjustablecushions (equal strokes)

Three position adjustable

cushions magnetic (equalstrokes)

Four position adjustable

cushions (unequal

strokes)

Four position adjustable

cushions magnetic

(unequal strokes)


92/177

Other actuators With electronic analogueoutput of piston position

Slide unit

Semi-rotary actuator

Rotary motor bi-directional

and non-reversible


93/177

Rodless cylinders Cushioned Cushioned

magnetic

Cushioned

passive

brake

Cushioned

magnetic

passive brake

Cushioned

active brake

Cushioned

magneticactive brake


94/177

Rodless cylinders Twinstroke

cushioned

Twin stroke

cushioned

magnetic

Twin strokeair through

carriage

Twin stroke

air through

carriage

magnetic


95/177

Shock absorbers Selfadjusting

Adjustable


96/177

End


97/177

Symbol Library

Air Line Equipment


98/177

Combination units

FRL with shut off

valve and pressuregauge Lubro-control unit

Filter and lubricator


99/177

Combination units

Breathing air set

Filter regulator

Filter regulator with

gauge


100/177


101/177

Pressure regulators

Pre-set relieving

Adjustable relieving

Adjustable relieving withpressure gauge

Pre-set relieving with

pressure gauge


102/177

Pressure regulators

Pilot operated

Pilot operated regulator

controlled from pilot

regulator

Pilot regulator with

independent feedback


103/177

Pressure regulators

Precision dual stage

(11-818) Proportional pressure

valve1

2

3


104/177

Lubricator

Lubricator


105/177

Pressure relief valves

Preset, no means of

connection to exhaust

Adjustable, no means of

connection to exhaust

Preset, tapped exhaust

port

Pilot operated

Adjustable, tappedexhaust port


106/177

Other components

Silencer

Water separator

automatic drain

Filter silencer


107/177

End


108/177

Symbol Library

Electrical and Electronic


109/177

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

Load0V

brown +V

blue

black

0V

0VLoad

Load

brown +V

blue 0V

Load0Vblack

brown +V

blue 0V

Load+Vblack

brown +V

blueLoad

0V

Loads must be additionally suppressed


110/177

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 pulseextension

brown +Vblue 0V

blackpnp

Load 0V

1

3

4pnp

brown +V

blue 0V

black Load 0V

1

brown +V

blacknpn

Load +V

blue 0V

3

4npn

brown +V

black Load +V

blue 0V

blackLoad 0V

brown +V

blue 0V



111/177

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

blackLoad 0V

Load 0V



112/177

Electrical Symbols


113/177

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


114/177


115/177


116/177

Electrical Components

Supply andreturn

Proximity switch

Touch sensitive

switch

Pressure switch

Bell

Buzzer

Microphone

Loudspeaker

P

24V

0V


117/177


118/177

Electronic Components Opto-isolator Windings

inductor

inductor with core

variable inductor

transformer

Capacitors

capacitor

polarisedcapacitor

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


119/177

Electronic Components Thyristor

Photo-

transistor

Triac

NPN Transistor

PNP Transistor

Fuse

Wires connected

Wires crossing

Double junction

or

or


120/177

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


121/177

End


122/177

Symbol Library

Function Fittings and Components


123/177

Function fittings Blocking fitting

1

212

1

2

1

2

Pressure reducingfitting

Pneumatic sensorfitting


124/177

Function components Air fuse

Non return valve

Non return valve


125/177

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)


126/177

Function components Uni-directionalflow regulator

Rotating joint

Quick exhaust

valve with and

without silencer

Pressure indicator

Pressure drop

indicator


127/177

Quick release couplings

Both sealed

Source sealed

Both to exhaust

made released


128/177


129/177

Symbol Library

Solenoid Valves


130/177

Solenoid valves

Direct solenoid

actuated spring return2/2 NC

Direct solenoid actuated

spring return 3/2 NC

Direct solenoid actuatedspring return 3/2 NO

with man override

on the solenoid

2

12 210

21012

21012

13

1

2

3

1012

1

2

3

12 10

13

12 10


131/177


132/177

Solenoid valves1

24

5 3

14 12

Pilot solenoid

actuated spring return,

5/2

Pilot solenoid actuated

spring return and manualoverride, 5/2


pilot solenoid return, 5/2

Pilot solenoid actuatedpilot 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


133/177

Solenoid valves24

Pilot solenoid


5/2


spring return and manualoverride, 5/2


and returned, 5/2

Pilot solenoid actuatedand 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


134/177

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 solenoidactuated differential air

return, 3/2

Priority pilot solenoid

actuated differential air

return, 5/2

1

24

5 3

14 12


135/177


136/177

Solenoid valves Pilot solenoid


manual override, 5/2with integral flow

regulators

Double pilot solenoidactuated, manual

override, 5/2 with integral

flow regulators

1

24

5 3

14 12

1

24

5 3

14 12


137/177

Solenoid valves Double pilot solenoid

actuated, spring to

centre all ports sealed,

5/3 with integral flow

regulators

Double pilot solenoidactuated, spring to centre

supply port sealed, 5/3 with

integral flow regulators

Double pilot solenoid

actuated, spring to centresupply 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


138/177

Proportional solenoid valves Proportional flow to

electrical signal

Proportional pressure toelectrical signal

24

15 3

1

2

3


139/177

Safety related valves Monitored dump

valve

1

2

3

1012

Soft start valve

1

2

3

12

10


140/177

End


141/177

Symbol Library

Valves


142/177

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


143/177


144/177

Valves external bleed supply Plunger / bleed

actuated air return 3/2

Antenna / bleed actuated

air return 3/2

2

One way trip / bleed


Roller / bleed actuated air

return 3/2

Low pressure / bleed


2

12 10

3

1

212 10

3

1

12 10

3

1

212 10

3

1

212 10

3

1


145/177

Pilot actuated valves Pilot actuated spring

return 2/2 Pilot actuated springreturn 3/2

Differential pilot actuated3/2

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


146/177

Pilot actuated valves Pressure or vacuum

actuated spring

return 2/2(diaphragm valve)

Low pressure pilot

actuated spring

return 3/2

Low pressure pilotactuated 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


147/177

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 10

12 2

10

1

12 210

1 1

24

5 3

14 12

2

13

12 1012 2

10

1


148/177

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


149/177


150/177

Pilot actuated valves Double pilot actuated

spring to centre all

ports sealed

Double pilot actuatedspring to centre supply

port sealed

Double pilot actuated

spring to centre supply tooutlets

1

24

5 3

1

24

5 3

1

24

5 3


151/177

Mechanically actuated valves

Plunger actuated

spring return 2/2 Plunger actuated springreturn 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


152/177

Mechanically actuated valves Plunger actuated

spring return, 4/2

Plunger actuated springreturn, 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


153/177


Roller actuated spring

return 2/2 Roller actuated springreturn 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


154/177

Mechanically actuated valves Roller actuated spring

return, 4/2

Roller actuated springreturn, 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


155/177


One way trip actuated

spring return 2/2 One way trip actuatedspring 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


156/177

Mechanically actuated valves One way trip actuated

spring return, 4/2

One way trip actuatedspring 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


157/177

Manually actuated valves


spring return 2/2 Push button actuatedspring 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


158/177

Manually actuated valves Push button actuated

spring return, 4/2

Push button actuatedspring 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


159/177


Lever actuated spring

return 2/2 Lever actuated springreturn 3/2

Lever actuated air reset

3/2

NC NO

12

210

1

2

1312

10

1

2

312

10

210

12

1

1

2

312

10

12

2

13

10


160/177

Manually actuated valves Lever actuated spring

return, 4/2

Lever actuated springreturn, 5/2

Lever actuated air reset

5/2 1

24

5 3

14

12

1

24

5 314

12

1

2 4

314

12


161/177

Manually actuated valves Lever actuated lever

return, variable

throttling, 4/2

Lever actuated leverreturn, variable throttling,

detented, 4/2

Rotary knob actuated and

returned, variablethrottling, 4/2

14

2 4

1 3

12

14

2 4

1 3

12

2 4

12

1 3

14


162/177

Manually actuated valves Lever actuated spring

to centre all ports

sealed

Lever actuated spring tocentre 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


163/177


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


164/177

Manually actuated valvesNC NO Pedal actuated spring

return 3/2

Treadle actuated detented3/2

1

2

3

12

10

2

13

12

10

1

2

3

12 10

2

13

12 10


165/177


Pedal actuated spring

return, 4/2

Pedal actuated springreturn, 5/2

Treadle actuated detented

5/2

1

2 4

3

14 12

1

24

5 3

1412

1

24

5 3

1412


166/177


Treadle actuated

spring to centre all

ports sealed Treadle actuated spring to

centre supply port sealed1

24

5 3

14 12

1

24

5 3

14 12

ll d l


167/177


Treadle actuated,

detented, all ports

sealed centre Treadle actuated,

detented, supply port

sealed centre1

24

5 3

1

24

5 3

14

12

14

12

ll d l


168/177



rotary manual return

3/2

Push button actuated key

return 3/2

Push actuated pull or air

returned 3/21

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

S f l d l


169/177

Safety related valves

Monitored dump

valve

1

2

3

1012

Emergency stop valve

Soft start valve

1

2

3

12

10

1

2

3

12 10

S i l l


170/177

Special purpose valves Impulse generator

1

2

3


171/177

End


172/177

Symbol Library

Vacuum Equipment

V i t


173/177

Vacuum equipment

Vacuum generator

Vacuum cups

Vacuum switch

pneumatic1

2

3

2

13

NONC

V i t


174/177

Vacuum equipment

Vacuum switch

electric, normally

open and normally

closed

Vacuum transducer withanalog and switched

outputs npn

Vacuum transducer with

analog and switched

outputs pnp

V dc

Analog out

Switch 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 dc

Analog out

Switch out

0 V

V i t


175/177

Vacuum equipment

Vacuum filter

Vacuum silencer

Vacuum gauge


176/177

End


177/177

End

chapter10 pneumatics symbols

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