ISO Hydraulic Basic Directional Valves Schematic Symbols

ISO Hydraulic Schematic Symbols
Hydraulic and Pneumatic Knowledge

The following are ISO hydraulic directional valve symbols commonly used on technical schematics.

Description ISO Schematic Symbol
Hydraulic Two - Way Valve Hydraulic Two - Way Valve

Hydraulic Three - Way Valve Hydraulic Three - Way Valve

Hydraulic Two - Way Valve Hydraulic Two - Way Valve

Hydraulic Two-Extreme Position, Without Fixed Position Valve Hydraulic Two-Extreme Position, Without Fixed Position Valve

Hydraulic Two-Extreme Position and Between (OSP) Hydraulic Two-Extreme Position and Between (OSP)

Hydraulic 2/2 Valve Hydraulic 2/2 Valve

Hydraulic 3/2 Valve Hydraulic 3/2 Valve

Hydraulic 4/3 Valve Hydraulic 4/3 Valve

Hydraulic Directional Valve with Transient Intermittent Position Hydraulic Directional Valve with Transient Intermittent Position

Hydraulic Directional Valve with Mechanical Feed Back Hydraulic Directional Valve with Mechanical Feed Back