Sweep Valves

These units are fitted below cylindrical flat bottom silos for effective discharge of bulk material into downstream equipment. A rotating two-blade sweep arm sweeps the material to an off-centre outlet of the unit and the material is discharged through an integral rotary feeder. Available in various sizes to suit silo diameters.

How a sweep valve works

  • Fitted below cylindrical, flat-bottom silos to discharge bulk material into downstream equipment.
  • A rotating two-blade sweep arm moves the material across the silo floor to an off-centre outlet.
  • Material leaves through an integral rotary feeder, so discharge is metered.
  • Available in sizes to suit the silo diameter.

For silos with a conical bottom, see bin activators and Bin FloPads. For the silos themselves, see silos and hoppers.

Frequently asked questions

What is a sweep valve?

A discharge unit fitted under a flat-bottom silo. A rotating sweep arm moves material across the silo floor to an off-centre outlet, where an integral rotary feeder discharges it into the next piece of equipment.

When is a sweep valve used instead of a conical hopper?

When the silo has a flat bottom. Without a cone, material will not flow out on its own, so the sweep arm carries it to the outlet.

How is the discharge rate controlled?

By the integral rotary feeder at the outlet, which meters material into the downstream equipment.

What sizes are available?

Scorpio builds sweep valves in sizes to suit the diameter of the silo.