Discharge Valves  :-

For Industrial Central Vacuum Systems

The Selection of the type of discharge valve is dependent on the job it is expected to do.
Below is a listing of the most common vac system discharge decives with basic criteria for their selection.

Slide Gate Valves for  Batch Discharge

These valves are used for batch discharging  material from a vessel.  Material collects untila high level is reached, the system is shut down, then discharged manually.

Click the link to read about the VORTEX clear action pneumatic gate valve.  There are manual gate valves and many other special application batch discharge valves available.

Some materials bridge too easily ( like carbon black, paper fibers, wood chips), and an unusually  large slide gate would  be required.  For these materials, use a continuous discharge device instead.