Maintenance Gate

The Vortex® Maintenance Gate is designed to shut off material from a hopper or silo when maintenance of downstream equipment is required.

• PTFE-treated bonnet packing gland, for greater wear resistance and longer service life
• Non-rising stem, for easier manual actuation
• Hand crank actuation, as a standard
• Designed to close through a standing column of material in the case of an upset condition
• Optional Special Service Inlet to protect the seals from abrasion
• Bonnet cover constructed from clear polycarbonate, for operator safety and to protect the gate from its environment
• Constructed from specialized metals and polymers for application-specific durability
• No internal cavities to prevent wedging, lodging, and spoilage
• Narrow profile for limited space applications

PTFE-treated bonnet packing gland, for greater wear resistance and longer service life

Non-rising stem, for easier manual actuation

Hand crank actuation, as a standard

Designed to close through a standing column of material in the case of an upset condition

Optional Special Service Inlet to protect the seals from abrasion

Bonnet cover constructed from clear polycarbonate, for operator safety and to protect the gate from its environment

Constructed from specialized metals and polymers for application-specific durability

No internal cavities to prevent wedging, lodging, and spoilage

Narrow profile for limited space applications

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. Well-suited for handling corrosive materials and/or for wash-down.

Available in square or rectangular sizes. Round transition options are available

Standard stud bolt pattern, DIN PN10, ANSI #125/150 Custom flanges are available

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

6061-T6 aluminum, painted carbon steel

304 or 316L stainless steel, carbon steel

Nylon, PET, UHMW-PE, 25% glass-filled PTFE

Bonnet seal cartridge with PTFE-treated packing gland

Clear bonnet cover for visual indication and/or proximity switches

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

Blade and gate liner are made of 304 stainless steel.

Blade and gate liner are made of 316L stainless steel.

Modifications have been made to allow for continuous operation at 400 F (204 C) and intermittent operation at 450 F (232 C).

The gate blade is electropolished. Polyethylene (PET or UHMW) pressure plate seals are used in place of nylon. *Additional modifications are available depending on the application.

Vortex Maintenance Gate vs. Alternatives