type of operation, e.g. electrical, pneumatical or manual. Directional control valves are often characterised by two numbers: the number of main ports followed by the number of switching positions.

Air valves allow metered flow of fluid in one or both directions. Many of them allow for free flow in one direction and reduced or metered flow in the reverse direction. They are used in pneumatic ...

The 187 Series and 281 Series high-pressure directional-flow controls provide restricted flow in one direction and free flow in the other The 187 Series and 281 Series high-pressure directional-flow ...

Hydraulic circuits are comprised of cylinders, valves, pumps, and are connected via hydraulic pipes and tubes. The complexity of these components are difficult to represent fully so hydraulic symbol ...