
2/2 Valve; 2 Ports, 2 Positions |

3/2 Valve; 3 Ports, 2 Positions |

4/2 Valve; 4 Ports, 2
Positions |

4/3 Valve; 4 Ports, 3 Positions |

5/2 Valve; 5 Ports, 2 Positions |

5/3 Valve; 5 Ports, 3
Positions |

Accumulator |

Air
Dryer |

Air Motor (One Directional
Flow) |

Air Motor (Two Directional
Flows) |

Check Valve (Spring Loaded) |

Compressor |

Cylinder (Spring Return) |

Cylinder Double Acting
(Double
Rod) |

Cylinder Double Acting
(Single Fixed
Cushion)
|

Cylinder Double Acting
(Two Adjustable
Cushions) |

Differential Pressure |

Direction of Flow |

Exhaust Line or Control Line |

Filter (no Drain) |

Filter (Automatic Drain) |

Filter (Manual Drain) |

Fixed Restriction |

Flexible Line |

Flow Control Valve |

Flow Gauge |

Lever |

Lines Connected |

Lines Crossing |

Lubricator |

Muscular Control |

One Bypass Flow Path and
Two Closed
Ports |

One Flow Path |

Pedal or Treadle |

Pilot Pressure (External) |

Pilot Pressure (Internal) |

Plugged Port |

Plunger or Position Indicator
Pin |

Pneumatic |

Pressure Actuated Electric
Switch |

Pressure Gauge |

Pressure Regulator
(Adjustable,
Non-Relieving) |

Pressure Regulator
(Adjustable,
Self-Relieving) |

Pressure Regulator
(Remote Pilot
Operated) |

Pushbutton |

Quick Acting Coupling |

Roller |

Roller (One-Way) |

Shuttle Valve |

Silencer |

Single Square |

Solenoid and Pilot;
Manual Override and
Pilot |

Solenoid (Single Winding) |

Spring |

Two Closed Ports |

Two Distinct Positions and
One Transitory
(Center) Position |

Two Flow Paths |

Two Flow Paths and One Closed
Port |

Two Flow Paths with Cross
Connection |

Vacuum Pump |

Variable Restriction |

Working Line |
|