Heavy Duty PAV Series Rotary Airlock Valves

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Our Heavy-Duty PAV Series rotary airlock is an ideal choice for handling many dry, free-flowing powders where a pressure differential exists, such as when feeding pneumatic conveying lines. Constructed from either stainless steel or cast iron, the Heavy-Duty PAV Series allows up to +/- 15 PSI pressure differential and 500°F with standard components. We also offer kits for extremely high-temperature rotary airlock applications up to 1,000°F. The PAV Rotary Airlock Valves are available in nine convenient sizes with optional coatings or construction materials available for handling abrasive or corrosive materials and equipped with chain drive gear-motors and your choice of speed. Inlets and outlets are available in many common sizes and we also offer designs built to your unique application.

These hard-working units are readily available in six popular square size openings as well as larger capacity machines with rectangular openings. The Large rectangular flanges allow for greater capacity and a reduced height. All three sizes, including the 14″x20″, 18″x24″ and 28″x30″, use one-piece cast bodies with reinforcing ribs for minimal deflection under the severe stress that large processing systems can impose.

Our Heavy-Duty PAV Series rotary airlock transfers dry, bulk materials from large bins to pneumatic systems against pressure. Used for many applications and with many materials, the Heavy-Duty PAV Series is ideal for companies of all sizes and types. Our smallest Heavy-Duty rotary valve is 6″, and we also offer 8″, 10″, 12″, 14″, 16″, 18″x24″, 28″x30″ or 14″x20″ models to easily fit into your company’s workspace.

Heavy Duty PAV Series Rotary Airlock Valve Features and Benefits

  • Up to 500° F with standard components
  • Up to +/- 12 PSI pressure differential
  • Cast Iron or stainless steel construction
  • Chain drive gear-motors (choice of speed)
  • Available in nine convenient sizes

Heavy Duty PAV Series Rotary Airlock Valve Literature

Contact Prater about our Heavy-Duty PAV Series, or any of our other rotary airlocks, today. Our professional team can provide you with a personalized estimate or you can simply make contact to discover all of the benefits of using our expertly designed rotary airlocks.

Below are some options for our HD PAV Series rotors. Other options are available as well, contact an airlock expert to explore your options!

Standard Non-Beveled


Wipers & Reduced Pocket

Split Pocket

Not Sure What Size Airlock You Need?

Try our Airlock Size Recommendation Tool: answer a few simple questions and we’ll provide a recommendation on what size airlock to use.


Materials often processed in a Heavy Duty PAV Rotary Airlock

The PAV-Series rotary airlock valve can be used for many different materials and specific applications, including baking soda, wood chips, lactose, zinc oxide, kaolin clay, fish meal, donut mix, polymer resin, nickel oxide, sugar, cement, soybean meal and many others such as the following:

  • A.B.S. Powder
  • Acetate Flake
  • Ammonium Alumina
  • Atomite
  • Baking Soda
  • Bauxite
  • Bone (Coarse Ground)
  • Bone Meal
  • Borax Powder
  • Cake (Copra Ground)
  • Calcium Carbonate
  • Carbon Black
  • Carbon Powder (Activated)
  • Cement
  • Charcoal (Ground)
  • Coal Dust
  • Coal (Pulverized)
  • Coconut (Shredded or Flake)
  • Coffee (Ground)
  • Coffee (Instant)
  • Corn (Cracked)
  • Corn Meal
  • Corn (Whole)
  • Cremora Powder
  • Dicalcium Phosphate
  • Digitalis Leaves
  • Disodium Phosphate
  • Donut Mix
  • Farina
  • Fish Meal
  • Fish Scrap
  • Flax Seed
  • Flock (Cellulose)
  • Flour (Wheat)
  • Fly Ash
  • Germ (Corn)
  • Gilsonite
  • Gluten Meal
  • Grain (Brewers)
  • Grits (Corn)
  • Hominy Meal
  • Hominy (Whole)
  • Ice (Crushed)
  • Ink Pigment
  • Iron Oxide Pigment
  • Kaolin Clay
  • Lactose
  • Lime (Hydrated)
  • Malamine Powder
  • Milk (Powdered)
  • Mustard Powder
  • Mustard Seed (Unground)
  • Nickel Oxide
  • Oats (Rolled)
  • Oats (Whole)
  • Orange Meal
  • Peanuts (Raw)
  • Peanuts (Roasted)
  • Pebblelime
  • Polymer Resin
  • Potassium Carbonate
  • Pulpwood (Chips)
  • Rice (Hulled)
  • Salt (Granulated Food Grade)
  • Salt (Rock)
  • Semonlina
  • Soda Ash (Sodium Carbonate)
  • Sodium Acid Pyrophospate
  • Sodium Sulfate
  • Solubles (Brewer Dried)
  • Soy White Flakes
  • Soybean Flakes (Raw)
  • Soybean Flakes (Spent)
  • Soybean Meal
  • Starch (Granulated)
  • Starch (Powdered)
  • Sugar 6x, 8x, 10x & 12x
  • Sugar (Powdered)
  • Sulfamic Acid
  • Sulfur (Ground)
  • Talcum Powder
  • Tea Leaves (Dry)
  • Tea Leaves (Spent Wet)
  • Titanium Dioxide (TiO2)
  • Tobacco (Ground)
  • Tobacco Stems (Chopped)
  • Vermiculite (Expanded)
  • Vinyl (Regrind)
  • Wheat Bran
  • Wheat (Buck)
  • Wheat (Cracked)
  • Wheat (Whole Grain)
  • Wood Chips (Dry)
  • Zinc Oxide

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