Pneumatic Symbols

2 0 0 6 Symb ol

PNEUMATIC SYMBOLS

D es cr ip tio n

DIRECTLY OPERATED SOLENOID VALVES - SINGLE SOLENOID

Sym bol

D es c rip tio n

ELECTROPNEUMATICALLY OPERATED VALVES - DOUBLE SOLENOID

3/2 N.C., mechanical spring return

3/2 with manual override

3/2 N.C., mechanical spring return with manual override

2/2 with manual override

3/2 N.O., mechanical spring return

electropneumatic return, 5/2 double solenoid, with manual override

3/2 N.O., mechanical spring return with manual override

PNEUMATICALLY OPERATED VALVES - SINGLE AIR-PILOT

2/2 N.C., mechanical spring return

3/2 N.C. mechanical spring return

2/2 N.C., mechanical spring return with manual override

3/2 N.O. mechanical spring return

2/2 N.O., mechanical spring return

2/2 N.C. mechanical spring return

2/2 N.O., mechanical spring return with manual override

2/2 N.O. mechanical spring return

3/2 N.C., mechanical spring return quick exhaust 

3/2 N.C. pneumatic spring return

ELECTROPNEUMATICALLY OPERATED VALVES - SINGLE SOLENOID

mechanical spring return, 5/2 single solenoid

3/2 N.C, mechanical spring return with manual override

5/2 pneumatic spring return,

mechanical spring return 2/2 N.C., with manual override

5/3 centre closed mechanical spring return

3/2 N.O., mechanical spring return with manual override

5/3 centre open mechanical spring return

2/2 N.O., mechanical spring return with manual override

5/3 pressure centre mechanical spring return

3/2 N.C., pneumatic spring return with manual override

PNEUMATICALLY OPERATED VALVES - DOUBLE AIR-PILOT

2/2 N.C., pneumatic spring return with manual override

3/2 N.C. pneumatic return

3/2 N.O., pneumatic spring return with manual override

2/2 N.C. pneumatic return

2/2 N.O., pneumatic spring return with manual override

3/2 N.C. differential pneumatic return

5/2, mechanical spring return with manual override

2/2 N.C. differential pneumatic return

5/2, pneumatic spring return with manual override

2/2 N.O. differential pneumatic return

5/3 centre closed, electropneumatic return with manual override

5/2 pneumatic return

5/3 centre open, electropneumatic return with manual override

5/2 differentiel pneumatic return

5/3 pressure centre, electropneumatic return with manual manual override override

MANUALLY OPERATED RETURN VALVES - SPRING RETURN 3/2 N.C. button operated mechanical spring return

Symbol

Description

Symbol

Description

3/2 N.O. button operated mechanical spring return

5/2

2/2 N.C. button operated mechanical spring return

3/2

2/2 N.O. button operated mechanical spring return

MECHANICALLY OPERATED VALVES - SPRING RETURN

5/2 button operated mechanical spring return

3/2 N.C. plunger operated mechanical spring return

3/2 N.C. lever operated mechanical spring return

3/2 N.O. plunger operated mechanical spring return

3/2 N.O. lever operated mechanical spring return

5/2 plunger operated mechanical spring return

2/2 N.C. lever operated mechanical spring return

3/2 N.C. roller operated mechanical spring return

2/2 N.O. lever operated mechanical spring return

3/2 N.O. roller operated mechanical spring return

5/2 lever operated, mechanical spring return

5/2 roller operated mechanical spring return

5/3 centre closed, lever operated mechanical spring return

3/2 N.C. unidirectional, roller operated mechanical spring return

5/3 centre open, lever operated mechanical spring return

3/2 N.O. unidirectional, roller operated mechanical spring return

5/3 pressure centre, lever operated mechanical spring return

5/2 unidirectional, roller operated mechanical spring return

3/2 N.C. pedal operated mechanical spring return 5/2 pedal operated mechanical spring return

MANUALLY OPERATED VALVES - DETENTED

MANUAL/MECHANICALLY OPERATED SENSITIVE VALVES - SPRING RETURN 3/2 N.O. lever operated, pneum. assisted mechanical spring return 3/2 N.C. lever operated, pneum. assisted mechanical spring return

3/2 N.C. push-pull button operated

5/2 lever operated, pneum. assisted mechanical spring return

2/2 N.C. push-pull button operated

5/2 plunger operated, pneum. assisted mechanical spring return

5/2 push-pull button operated

5/2 roller operated, pneum. assisted mechanical spring return

3/2 N.C. lever operated lever return

MANUAL/MECHANICALLY OPERATED SENSITIVE VALVES - DETENTED

2/2 N.C. lever operated lever return

5/2, plunger operated, pneum. assisted plunger return

5/2 lever operated lever return

5/2 roller operated, pneum. assisted roller return

5/3 centre closed, lever operated lever return

LOGIC VALVES

5/3 centre open, lever operated lever return

"AND" pneumatic symbol

5/3 pressure centre, lever operated lever return

"AND" logical symbol

5/2, pedal operated pedal return

"OR" pneumatic symbol

PNEUMATIC SYMBOLS

2 0 0 6 Symbol

Description

Symbol

Description

"OR" logical symbol

Rear spring Single-acting cylinder

"NOT" pneumatic symbol

Rear spring magnetic Single-acting cylinder

"NOT" logical symbol

Through-rod Single-acting cylinder

"YES" pneumatic symbol

Through-rod, magnetic Single-acting cylinder

"YES" logical symbol "memory" pneumatic symbol “memory” logical symbol

AUTOMATIC VALVES

CYLINDERS -

DOUBLE-ACTING

Double-acting cylinder non-adjustable cushioning Double-acting cylinder non-adjustable cushioning, magnetic Double-acting cylinder adjustable cushioning Double-acting cylinder adjustable cushioning, magnetic

Non return valves

Double-acting cylinder Through-rod, non-adjustable cushioning

Quick exhaust valves

Double-acting cylinder Through-rod, magnetic non-adjustable cushioning

Bidirectional flow control valve

Double-acting cylinder Through-rod, adjustable cushioning

Unidirectional flow control valve

Double-acting cylinder, Through-rod adjustable cushioning, magnetic

Silencer

Rodless cylinder adjustable cushioning, magnetic

AIR PREPARATION Filter with drain Pressure regulator RELIEVING Lubricator

Rotary cylinder double acting

PRESSURE SWITCH, INDICATOR AND AMPLIFIER N.C. adjustable pressure switch

Soft Start / dump valve pneumatically operated

Soft Start / dump valve electrically operated

CYLINDERS -

ROTARY CYLINDERS

SINGLE-ACTING

Front spring Single-acting cylinder Front spring magnetic Single-acting cylinder

N.O. adjustable pressure switch pressure switch changover contact 

Pneumatic pressure indicator

Pneumatic amplifier