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
Gravity flow only
Heavy-duty and/or abrasive dry bulk solid materials with large particle sizes, such as minerals, coal and aggregates
6 – 36 in | 150 – 610 mm
Contact us for custom sizes
Available in square or rectangular sizes. Round transition options are available
4 in | 110 mm
85 – 395 lb | 40 – 180 kg
Custom flanges are available
180°F | 80°C for standard gate, with modifications that allow up to 550°F | 290°C
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
Hardened steel, 304 stainless steel & bronze, 25%glass-filled PTFE, nylon, bronze
Double-acting air cylinder, hand wheel, chain wheel, electric actuator, hydraulic actuation
Magnetic reed, proximity or mechanical limit switches
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.
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.