List of components (fluid technology)

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List of circuit symbols : Circuit symbols for circuit diagrams in hydraulics and circuit diagrams in pneumatics .

Circuit symbols for fluid technology (hydraulics and pneumatics)

The symbols of fluid power are standardized in the (book of tables) ISO 1219: 2012.

Currents

The direction of fluid flows in hydraulics and pneumatics is generally indicated by arrows in the corresponding fluid elements, lines or valves .

Storage

Icon gas bottle.svg Storage tank, gas bottle or container
Symbol Gas bottle with Gas tightener.svg Gas pressure accumulator with bladder
Icon Air reservoir.svg Air tank
Symbol Pressure-Air reservoir.svg Compressed air tank
Symbol Liquid reservoir (connected to Atmosphere) .svg (Liquid) container
Communication with atmosphere
Symbol Liquid reservoir (connected to Atmosphere; Fitting over the fluid level) .svg (Liquid) container
communication with atmosphere; Pipe connection above the liquid level
Symbol Liquid reservoir (connected to Atmosphere; Fitting under the fluid level) .svg (Liquid) container
communication with atmosphere; Pipe connection below the liquid level

Pumps, compressor

Symbol Hydro pump.svg hydraulic pump
Symbol Pneumatics pump.svg Pneumatic pump
Icon Compressor.svg Compressor or Compressor
Symbol Hydro pump (firm direction of rotation) .svg Hydraulic pump with fixed direction of rotation (right or left)

Engines

Symbol Pneumatic motor.svg Pneumatic motor
Symbol Hydro motor.svg Hydraulic motor


Transfer, processing

Conditioner (maintenance unit)

Symbol Fluid-Filter.svg filter
Symbol Fluid-Filter with Contamination indicator.svg Filter with contamination indicator
Symbol Fluid-Separator with manual drainage.svg Separator with manual drainage
Symbol Fluid-Separator with automatic drainage.svg Separator with automatic drainage
Symbol Fluid-Oiler.svg Oiler
for oiling parts that are supplied by compressed air
Fluid-Air dryer.svg symbol Air dryer
z. B. by means of chemicals or short-term temperature and pressure changes
Symbol Fluid-Conditioning unit.svg
Symbol Fluid-Conditioning unit (detailed view) .svg 		Maintenance unit
filter, separator, pressure reducing valve, pressure gauge, oiler
Icon Fluid-Coolly.svg Cooler
without specifying the direction of flow of the coolant
Symbol Fluid-Coolly (with indication of the cooling agent flow direction) .svg Cooler
indicating the direction of flow of the coolant
Symbol Fluid-Heater.svg heater
Fluid-Temperature regulator.svg symbol Temperature
regulator supply or removal of heat
Symbol Muffler.svg silencer

Valves ( actuators )

Directional control valves

Symbol Ski selector valve (two switching positions) .svg Directional valve with two switching positions,
general symbol
Symbol Ski selector valve (three switching positions) .svg Directional valve with three switching positions,
general symbol
Symbol Ski selector valve (three switching positions; four connections) .svg Directional valve with three switching positions and four connections,
general symbol
Symbol Ski selector valve (intermediate positions; two end positions) .svg Directional valve with intermediate positions and two end positions, also called proportional valve ,
general symbol
Symbol One flow path.svg A flow path (the connections are connected and the medium can flow through)
Symbol Two closed connections.svg Locked position (the connections are closed, the medium cannot flow through)
Icon Two flow paths.svgSymbol Two flow paths (diagonally) .svg Two flow paths
Symbol Two flow paths and a closed connection.svg Two flow paths and one blocked connection
Symbol Two flow paths with connection.svg Two flow paths with connection
Icon Flow path in shunt link circuit.svg A bypass flow path

Shut-off valves

Check valve.svg icon check valve
Symbol Check valve (spring-tensioned) .svg Check valve
spring loaded
Symbol Steered check valve (control prevents closing) .svg Controlled non-return valve
closing is prevented when activated
Symbol Steered check valve (control prevents opening) .svg Controlled non-return valve
opening is prevented when activated
Shuttle valve.svg symbol Shuttle valve ; OR valve
Quick exhaust valve.svg icon Quick exhaust valve
Symbol Two pressure valve.svg Two-pressure valve
Stop valve.svg symbol Shut-off valve

Pressure valves

Symbol Pressure relief valve.svg Adjustable pressure relief valve
Symbol Sequence valve (adjustable) .svg Sequence valve
adjustable
Symbol Sequence valve (with discharge opening) .svg Sequence valve
with drain opening
Symbol Pressure control valve (adjustable) .svg Adjustable pressure control
valve
Symbol Pressure control valve (adjustable; with discharge opening) .svg Adjustable pressure control
valve; with drainage opening

Flow valves

Throttle valve.svg icon Throttle valve
cross section constant
Orifice valve.svg icon Orifice valve
cross section constant
Flow control valve.svg symbol Measuring orifice
cross-section adjustable
Symbol Throttle valve (cross section setable) .svg Throttle valve
cross section adjustable
Symbol Throttle valve (cross section setable by Hand) .svg Throttle valve
cross-section adjustable by manual operation
Symbol Retract resistor check valve.svg One-way flow control valve

Types of actuation (of valves)

Symbol Manual operation on Vent.svg Muscle strength exercise (general)
Symbol Manual operation with pressure and pull button on Vent.svg Muscle power
actuation with push and pull button
Symbol Manual operation with pressure button on Vent.svg Muscle power actuation
with push button
Symbol Manual operation with pull button on Vent.svg Muscle power
actuation with pull button
Icon Lever on Vent.svg lever
Symbol Pedal on Vent.svg pedal
Symbol Pedal with two operation directions on Vent.svg Pedal
with two directions of actuation
Symbol Electrical manipulation with magnetic coil on Vent.svg Electric actuation
with magnetic coil. When voltage is applied to the coil, the valve block moves in the direction of the upper end of the slash symbolizing the coil, and the passage of the square that has been moved to the center becomes active. Here the block moves to the right and the passage of the left square would be active.
Symbol Electrical manipulation with electric motor on Vent.svg Electric operation
with an electric motor
Symbol Pressure manipulation on Vent.svg Pressure actuation
direct; general
Symbol Gas Pressure manipulation on Vent.svg Pressure actuation
direct; by compressed air
Symbol Fluid Pressure manipulation on Vent.svg Pressure actuation
direct; through liquid
Icon Tappet on Vent.svg Plunger
Symbol Roller shaft on Vent.svg Roller tappet
Symbol Roller lever on Vent.svg Roller lever
Symbol Spring on Vent.svg feather
Symbol Pressure manipulation on Vent (indirectly; pneumatically actuated preliminary) .svg Indirect pressure
actuation with pneumatically actuated preliminary stage
Symbol parallel manipulation (pushbutton or electrical magnet) on Valve.svg Parallel operation
z. B. actuation by push button or pneumatic preliminary stage
Symbol Series manipulation (electrical magnet operates pressure control valve) on Valve.svg Series actuation
z. B. electric solenoid actuates pressure valve which actuates the main valve

Actuators / cylinders ( working links )

Symbol Cylinder (simple working; Return stroke spring) .svg Single acting cylinder
with return stroke spring
Symbol cylinder (double working) .svg Cylinder
double acting
Symbol cylinder (double working; simple) .svg Double acting cylinder
, simplified representation
Symbol cylinder (double working; bilateral piston rod) .svg Cylinder (synchronous cylinder)
double-acting with double-sided piston rod
Symbol Cylinder (absorption of the piston) .svg Cylinder
double acting piston-sided loss
Symbol Cylinder (adjustable absorption of the piston) .svg Double-acting cylinder
with adjustable cushioning on the piston side
Symbol cylinder (reciprocal absorption) .svg Double-acting cylinder
with cushioning on both sides
Telescopic cylinder, single-acting Telescopic cylinder
single acting
Telescopic cylinder, double-acting Telescopic cylinder
double acting
Pneumatic Muscle Icon.JPG Pneumatic muscle

Measuring and display devices ( measuring elements )

Symbol manometer.svg Manometer , pressure gauge
Symbol differential pressure measuring instrument.svg Differential pressure meter
Fluid-Temperature gauge.svg symbol Temperature meter ( thermometer )
Symbol Liquid level measurer.svg Liquid level meter
Flow rate measuring instrument.svg symbol Volume flow meter
Symbol Flow rate indicator.svg Volume flow indicator
Symbol Number of revolutions measuring instrument.svg Tachometer
Torque measuring instrument.svg symbol Torque meter

See also

Web links

Commons : ISO 1219  - collection of images, videos and audio files
  • D&C Scheme Editor - free program for creating circuit diagrams and maintaining the components