Combination valves

The combined functions of various elements can produce a new function.
An example is the time delay valve which is the combination of a
one-way flow control valve, a reservoir and a 3/2-way directional control
valve.
Depending on the setting of the throttling screw, a greater or lesser
amount of air flows per unit of time into the air reservoir. When the necessary
control pressure has built up, the valve switches to through flow.
This switching position is maintained for as long as the control signal is
applied.
Other combinational valves include the
- Two-hand start unit
- Pulse generator
- Stepper modules
- Memory modules