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Aggregate Gate

The Vortex® Aggregate Gate is designed to meet demanding applications handling material such as sand, gravel, whole grains, and coal. The narrow profile, choice of actuators, and custom rectangular sizes make this slide gate adaptable to most existing installations. Optional inlet or outlet flanges and dust return pans are available.

Ideal application: Similar in design to the Vortex® Titan Slide Gate™ but vastly different in scope, the Vortex® Aggregate Gate™ is ideal for handling larger-size, abrasive dry bulk solid materials in applications where fine materials and dusts are of less concern.

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A Quantum Orifice Gate Valve from Vortex

Key Features

  • Seals are protected by a series of deflectors and retainers to reduce wear and extend service life

  • Removable bonnet cover for easy inspection of valve body

  • Displacement pocket prevents wedging and packing into an end seal

  • Optional return pan redirects migrant materials in the bonnet area back into the material flow

  • Constructed from specialized metals and polymers for application-specific durability and abrasion resistance

  • Modifications allow the gate to be used in higher temperature applications up to 550°F | 290°C

  • Optional side-mounted handwheel with rack & pinion gearing for quick, manual actuation

  • Blade constructed from abrasion-resistant steel

  • Replaceable abrasion-resistant liners for durability and prolonged service life

Seals are protected by a series of deflectors and retainers to reduce wear and extend service life
Removable bonnet cover for in-line maintenance
Displacement pocket prevents wedging and packing into an end seal
Optional return pan redirects migrant materials in the bonnet area back into the material flow

Tech Specs

Model No.


Conveyance Type

Gravity flow only

Materials Handled

Heavy-duty and/or abrasive dry bulk solid materials with large particle sizes, such as minerals, coal and aggregates

Standard Sizes

6 – 36 in | 150 – 610 mm
Contact us for custom sizes


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

Overall Height

4 in | 110 mm


85 – 395 lb | 40 – 180 kg

Flange Options

Standard flange
Custom flanges are available

Material Temperatures

180°F | 80°C for standard gate, with modifications that allow up to 550°F | 290°C

Body/Frame Options

Carbon steel, stainless steel

Material Contact Options

Carbon steel, 304 stainless steel, 235 BHN abrasion-resistant steel, SAE 660 bronze

End, Bonnet & Side Seal Options

Belted rubber, chute rubber, bronze

Roller Options

Hardened steel, 304 stainless steel & bronze, 25%glass-filled PTFE, nylon, bronze


Double-acting air cylinder, hand wheel, chain wheel, electric actuator, hydraulic actuation

Position Confirmation

Magnetic reed, proximity or mechanical limit switches

Other Options

Return Pan, Special Service Inlet


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



Blade and frame are made of 304 stainless steel.  Rollers are 440 stainless steel and roller stud bolts are 304 or 18-8 stainless.


Modifications are made allowing 250°F (121°C) continuous to 300°F (149°C) intermittent service.


Modifications are made allowing 400°F (204°C) continuous to 450°F (232°C) intermittent service.


Slide blade is made of AR plate for handling more abrasive materials.


The dust seal will help to eliminate or reduce dusting to atmosphere.  An example of an application the Enhanced Bonnet Seal option would be good for would be handling rocks with dust present.

*Additional modifications available based on application.

Power of Comparison

Vortex Aggregate Gate vs. Alternatives

The Vortex® Aggregate Gate™ offers many distinct advantages over alternative slide gates used in abrasive material handling applications:

• Many alternative slide gates allow metal-on-metal sliding, which creates galling. This causes a gate to seize and bind, and can create foreign metal fragment contamination. The Aggregate Gate's internal nylon gate liners and blade guides eliminate metal-on-metal contact to resolve each of these concerns.

• Unlike other roller-supported slide gates used in abrasive material handling applications, the Aggregate Gate's resilient rubber seals provide a positive material shut-off.

• Many alternative slide gates cannot be maintained while in-line. This can lead to expensive and extensive production downtime. The Aggregate Gate features blade rollers that can be externally greased while the gate remains in-line.

• Many alternative slide gates pack materials into an end seal, preventing positive closure. This promotes material leakage through the valve, can cause blade damage, and can cause other actuation issues. The Aggregate Gate is designed to trap larger material against a rubber seal until the gate is reopened.

• Many alternative roller-supported slide gates have open cavities where materials can wedge and prevent positive material shut-off. Wedging can also create seal wear and material degradation, and cause a gate to seize and bind. Wedged materials also create risk for cross-contamination and spoilage. To prevent wedging and ensure positive gate closure, the Aggregate Gate's sliding blade is designed to mechanically clear materials away from the sealing surfaces with each actuation. With each closing stroke, the Aggregate Gate mechanically self-cleans its side seals. With each opening stroke, a rubber scraper seal hinders the blade from carrying materials back into the bonnet area. Both of these considerations ensure migrant materials are forced back out of the seals and are discharged into the process line, rather than packing in the seals and causing actuation issues.

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