Positive Seal Valve

PEBCO’s product line of high-quality slide gates and valves are uniquely designed to get the maximum productivity out of your system and are being built to withstand the test of time.

These slide gates and valves are designed to best control the flow of materials at varying rates and in a wide range of environments. From single blade gates to dewatering gates and clamshell gates, PEBCO has the perfect product for your job.

Standard blade supports are available as re-greasable cam followers, polymer or steel slide bars, or pins. While neoprene, felt and silicone are Pebco’s most common seal materials, a range of other polymers such as Tivar®, Teflon®, specialty urethanes, and many more are available to meet your application requirements.

Slide Gates can be fully customized to fit your needs. Actuation options are available on every model and additional features include externally accessible seals and blade supports.


PEBCO® Positive Seal Valves feature a fully sealed and gasketed design providing self-adjusting seals for material flow. Maintenance is a cinch on these valves, as rear access allows for disc replacement without the need to remove the valve itself. More product info:

  • Fully sealed and gasketed design suitable for pressures up to 14.9 psi
  • Tapered disc and seat provide optimum, self-adjusting seal up-stream to down-stream
  • Cast urethane disc compresses when closed to allow use in liquid and gas applications
  • Large rear access cover allows disc replacement without removing the valve from the process line
  • Pneumatic or hydraulic actuation provides constant load on sealing surfaces
  • Stack two PSVs to create an improvement on the “Double Dump Valve”

Typical applications include:

  • Positive shut-off of aerated products beneath silos and fluidized conveyors
  • Dust collector/cyclone discharges and pneumatic conveying
  • Improved sealing and low maintenance make this an attractive replacement for rotary valves/airlocks

Optional Features:

  • Polymer or metallic discs are available for special applications and/or elevated temperatures
  • Outboard bearings with adjustable shaft packing for pressurized applications
  • Include a spool or “dutchman” between two PSVs to increase throughput