Plattco Corporation
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Double Flap Airlock® Valves
H-Series / Premiere Valve
R-Series / Radial Valve
    Product Features
    Plattco’s Mechanical Seal
    Specifications & Drawings
    3D Valve Demonstration
    Product Sheet (PDF)
S8-Series / Low Profile Valve
PCV-Series / Pollution Control Valve

Slide / Isolation Gates
T-Series / High-Cycling Gate
U-Series / Maintenance Gate

Materials / Applications
Success Stories
Capacity Chart (PDF)
Product Installation Manuals
Complete Product Catalog (PDF)



“Since installing Plattco valves, we have saved ourselves between 150 and 200 man hours on problems directly related to the seals -- which translates into $12,000 to $16,000 just in labor cost savings alone.”
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Plattco’s Double Flap Airlock® Valves
Solving material handling problems that no other valve can.

R-Series / Radial Valve

Product Features
Plattco’s Radial valve combines all of the features of the H-Series with an airtight radial seat and flapper. The patented radial shape of the seat and flappers allow for a true and tight fit even after extended use to prevent loss of pressure.

Combined with Plattco’s legendary “easy maintenance technology,” this exceptional double-dump valve offers the lowest overall 10 year cost of any other airlock on the market. Contact us to calculate the value of Plattco Valves based on your operation.

Easy To Maintain:

The inside of the valve (including seat and flapper) can be reached through access covers in the bodies of the valves (optional Camlock Covers offer even quicker access).

Seats and flappers (which provide the seal) can be quickly replaced without moving the valve or taking it out of service.

Outboard mounted shaft bearings allow for air circulation, are easy to reach and maintain; allow for easy shaft seal adjustment or replacement.

Seal pocket modular cartridge makes it quick and easy to change or adjust the shaft seal to as new condition in-line.

Numerous maintenance-friendly features, such as:

  • Stainless steel shafts
  • Body ports for the removal of flapper pins
  • External seat adjustment screws
  • Heavy duty air cylinders
  • Keyed links & arms provide for precision positioning

Options Available:

Air Cooling Jets Four Way Directional Valves
Rod End Bearing Seals Air Cylinder Heat Shields
High Temperature Bearings Safety Guards
Camlock Access Covers Mechanical Limit Switches
Timers Cylinder Rod Boots
NEMA Enclosures Viton Air Cylinders
Dust Deflectors Optional Gear Ratios
Zero Speed Switches Expansion Joints
Proximity Switches  


Not sure if this is the right valve to meet your unique needs? We’re here to help! Contact us!



R-Series Valve

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3D valve demo

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Plattco Corporation is the recognized leader for valves that solve material handling problems in a wide variety of industries. Plattco specializes in the design and manufacture of Double Flap Airlock® Valves and associated multi-purpose slide gates as an important part of dry material handling systems.

Industries / Applications For demanding conditions, Plattco valves are the ideal choice when you need a seal that performs, including Precipitator, Baghouse, Clinker Cooler, Cyclones, Ash Handling, Air Heater Hopper, Burner Chute, Bulk Handling, CFB Boiler, Dust Collector, Grinding Mill, Kiln, Preheater Hopper, Pneumatic Conveying, Screw Pump Replacement, Spritzer Trap, Vacuum Systems, Filter Receivers, Classifiers, Alternate Fuel Feed Airlock, Storage Silos, Cooling Towers, Air Slides, Conditioning Towers, Coal Mill Feeder, Construction, Boiler Feed, Coal-fired Power Plants, Fluid-bed Boiler Discharge, Pressure Transport Systems, Waste to Energy, Positive Pressure Conveying Systems, ESP Valves, Dust Collection, Superheaters, Scrubber Discharge, Boiler Bypass, Higher Temperature, Kiln Cyclone Airlocks, Reactor Valves, Energy & Incineration, Mining, Pollution Control, Environmental Systems, Recycling, Gasification.

Materials / Media Plattco built its reputation on reliable, resilient valves that tackle the toughest conditions. If you have a highly-abrasive, high-temperature material, there is no better choice than Plattco. We have more than 50 years experience handling Aggregate, Alumina Chips, Alumina Powder, Alumina Rocks, Animal Feed, Asphalt, Glass Beads, Metal Beads, Plastic Beads, Broken Glass, Bulk Powder Solids, Carbon Ash, Casting Sand, Cement, Finish Cement, Raw Cement, Dry Chemicals, Clinker Dust, Coal, Coal Dust, Concrete, Corn, Crushed Glass Dust, Fiberglass Dust, Fiberglass Granules, Fly Ash, Foundry Sand, Glass Furnace Dust, Graphite, Gypsum Rock, Gypsum Pellets, Kiln Dust, Lead, Lead Chips, Lead Powder, Metal Powders, Metal Shavings, Minerals, Paper Pulp, Quarry Dust, Rocks, Silica, Soybeans, Soy Flour, Stone, Stone Dust, Styrofoam, Talc, Tungsten Carbide, Waste Material, Wheat, Wood Chips, Wood Dust.

Equipment / Industry Terms With the number of products Plattco carries and the industries we serve, there are various terms which may apply, including: Double Flap Gate Valve, Double-Flap Airlock® Valves, Double Dump Valves, Airlock Valves, Plattco's, Industrial Valves, Metal Valves, Air Valves, Double Flap Airlock Valves; as well as, Material Handling Gates, High-Cycling Gates, Isolation Gates, Maintenance Slide Gates, Gate Valves, Knife Gates, Knife Gate Valves, Slide Gates, Slide Valves, Low Profile Gates, Multi-purpose Gates and Feeder Gate Valves.

To determine the ideal Plattco valve for your demanding conditions, contact us today.