Gate Orifice

The Vortex® Quantum Orifice Gate™ is specifically engineered to handle dry bulk solids in gravity flow, dilute-phase, or vacuum conveying systems with pressures up to 15 psig (1 barg), depending on size.

• Live-loaded, wear-compensating hard polymer pressure plate seals
• Shimming system for in-line maintenance
• Displacement area as an alternative to packing materials in an end seal
• Positive seal of materials/dust-tight seal across the blade and to the atmosphere
• Mechanically self-cleans its seals during the opening stroke when actuated to the fully open position
• No pinch points or exposed moving parts for safety
• No internal cavities to prevent wedging, lodging, and spoilage
• Narrow profile for applications with limited space

Live-loaded, wear-compensating hard polymer pressure plate seals

Shimming system for in-line maintenance

Displacement area as an alternative to packing materials in an end seal

Positive seal of materials/dust-tight seal across the blade and to the atmosphere

Mechanically self-cleans its seals during the opening stroke, if actuated to the fully open position

No pinch points or exposed moving parts for safety

No internal cavities to prevent wedging, lodging, and spoilage

Narrow profile for applications with limited space

Gravity flow and dilute-phase pneumatic conveying applications. Can handle differential pressures up to 15 psig | 1 barg | 0.1 MPa, depending on gate size. Can be used in pressure or vacuum systems.

Non-abrasive to moderately abrasive powders, pellets, and granules. Modifications are available for handling corrosive materials and/or for wash-down.

Standard stud bolt pattern, through-bolt pipe connection, ANSI #125/150, DIN PN10. Custom flanges are available.

180° F | 80° C for a standard gate, with modifications that allow for temperatures up to 400° F | 205° C

Aluminum, 304 stainless steel, painted carbon steel

Nylon, PET, UHMW-PE, glass-filled PTFE, molybdenum disulfide-impregnated nylon

Natural rubber and/or silicone rubber

Double-acting air cylinder, handwheel/crank, chain wheel, electric actuator

Magnetic reed switches, proximity switches, or mechanical limit switches, and/or a clear bonnet cover for visual indication

Sealed-body air purge (Available only on traditional orifice gates) Special service inlet

ATEX Zone 20 (internal), ATEX Zone 21 (external), FDA

250°F–300°F (121°C–149°C) HIGH-TEMPERATURE SERVICE: Replace the standard natural rubber Load Seal and Void Filler on the back of the pressure plate with silicone rubber only (remove the void filler).

400°F–450°F (204°C–232°C) HIGH-TEMPERATURE SERVICE: Replace the standard pressure plate, shim spacer, and load seals with a 25% glass-filled Teflon pressure plate, shim spacer, and silicone load seals (void filler is removed). Replace the standard air cylinder with a Viton-sealed air cylinder. Replace the standard SBR flange gaskets with 3/16” silicone sponge flange gaskets. This option is NOT food-grade.

WATER WASHDOWN / STICKY MATERIALS: Replace the Nylon 6/6 pressure plates and spacer shim with PET pressure plates and a Delrin or Acetron GP spacer shim. Replace the standard slide blade with an electropolished slide blade. *Additional modifications are available depending on the application.

Vortex Orifice Gates vs. Alternatives