ISO Hydraulic Basic Directional Valves Schematic Symbols

ISO Hydraulic Schematic Symbols
Hydraulic and Pneumatic Knowledge
Fluid Power Equipment

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

Description ISO Schematic Symbol
Hydraulic Two - Way Valve

Hydraulic Three - Way Valve

Hydraulic Two - Way Valve

Hydraulic Two-Extreme Position, Without Fixed Position Valve

Hydraulic Two-Extreme Position and Between (OSP)

Hydraulic 2/2 Valve

Hydraulic 3/2 Valve

Hydraulic 4/3 Valve

Hydraulic Directional Valve with Transient Intermittent Position

Hydraulic Directional Valve with Mechanical Feed Back

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