ISO Hydraulic Mechanical and Direction Control Schematic Symbols

ISO Hydraulic Schematic Symbols
Hydraulic and Pneumatic Knowledge

The following are ISO hydraulic basic mechanical, spring, viscosity valves, flow direction, etc. symbols commonly used on technical drawings.

Description ISO Schematic Symbol
Spring Spring

Viscosity Dependant Throttling Viscosity Dependant Throttling

Non-Viscosity Dependant Throttling Non-Viscosity Dependant Throttling

Hydraulic Flow Direction Hydraulic Flow DirectionHydraulic Flow DirectionHydraulic Flow DirectionHydraulic Flow Direction

Direction of Rotation Direction of Rotation

Variable Setting Device Variable Setting DeviceVariable Setting Device