List of components (fluid technology)
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
Storage tank, gas bottle or container | |
Gas pressure accumulator with bladder | |
Air tank | |
Compressed air tank | |
(Liquid) container Communication with atmosphere |
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(Liquid) container communication with atmosphere; Pipe connection above the liquid level |
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(Liquid) container communication with atmosphere; Pipe connection below the liquid level |
Pumps, compressor
hydraulic pump | |
Pneumatic pump | |
Compressor or Compressor | |
Hydraulic pump with fixed direction of rotation (right or left) |
Engines
Pneumatic motor | |
Hydraulic motor |
Transfer, processing
Conditioner (maintenance unit)
filter | |
Filter with contamination indicator | |
Separator with manual drainage | |
Separator with automatic drainage | |
Oiler for oiling parts that are supplied by compressed air |
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Air dryer z. B. by means of chemicals or short-term temperature and pressure changes |
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Maintenance unit filter, separator, pressure reducing valve, pressure gauge, oiler |
Cooler without specifying the direction of flow of the coolant |
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Cooler indicating the direction of flow of the coolant |
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heater | |
Temperature regulator supply or removal of heat |
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silencer |
Valves ( actuators )
Directional control valves
Directional valve with two switching positions, general symbol |
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Directional valve with three switching positions, general symbol |
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Directional valve with three switching positions and four connections, general symbol |
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Directional valve with intermediate positions and two end positions, also called proportional valve , general symbol |
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A flow path (the connections are connected and the medium can flow through) | |
Locked position (the connections are closed, the medium cannot flow through) | |
Two flow paths | |
Two flow paths and one blocked connection | |
Two flow paths with connection | |
A bypass flow path | |
Shut-off valves
check valve | |
Check valve spring loaded |
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Controlled non-return valve closing is prevented when activated |
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Controlled non-return valve opening is prevented when activated |
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Shuttle valve ; OR valve | |
Quick exhaust valve | |
Two-pressure valve | |
Shut-off valve |
Pressure valves
Adjustable pressure relief valve |
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Sequence valve adjustable |
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Sequence valve with drain opening |
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Adjustable pressure control valve |
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Adjustable pressure control valve; with drainage opening |
Flow valves
Throttle valve cross section constant |
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Orifice valve cross section constant |
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Measuring orifice cross-section adjustable |
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Throttle valve cross section adjustable |
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Throttle valve cross-section adjustable by manual operation |
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One-way flow control valve |
Types of actuation (of valves)
Muscle strength exercise (general) | |
Muscle power actuation with push and pull button |
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Muscle power actuation with push button |
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Muscle power actuation with pull button |
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lever | |
pedal | |
Pedal with two directions of actuation |
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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. |
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Electric operation with an electric motor |
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Pressure actuation direct; general |
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Pressure actuation direct; by compressed air |
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Pressure actuation direct; through liquid |
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Plunger | |
Roller tappet | |
Roller lever | |
feather | |
Indirect pressure actuation with pneumatically actuated preliminary stage |
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Parallel operation z. B. actuation by push button or pneumatic preliminary stage |
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Series actuation z. B. electric solenoid actuates pressure valve which actuates the main valve |
Actuators / cylinders ( working links )
Single acting cylinder with return stroke spring |
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Cylinder double acting |
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Double acting cylinder , simplified representation |
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Cylinder (synchronous cylinder) double-acting with double-sided piston rod |
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Cylinder double acting piston-sided loss |
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Double-acting cylinder with adjustable cushioning on the piston side |
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Double-acting cylinder with cushioning on both sides |
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Telescopic cylinder single acting |
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Telescopic cylinder double acting |
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Pneumatic muscle |
Measuring and display devices ( measuring elements )
Manometer , pressure gauge | |
Differential pressure meter | |
Temperature meter ( thermometer ) | |
Liquid level meter | |
Volume flow meter | |
Volume flow indicator | |
Tachometer | |
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