Rotary Airlock Valves

Whether you need heavy duty construction for constant operation, a compact design for low-pressure applications, or an economical and rugged cast iron housing for efficient operation, rotary airlock valves from Imperial Systems minimize employee exposure to dust.

Whether you need heavy duty construction for constant operation, a compact design for low-pressure applications, or an economical and rugged cast iron housing for efficient operation, rotary airlock valves from Imperial Systems minimize employee exposure to dust.

Our rotary airlocks have been designed with service in mind. No special tooling is required to replace wear parts, minimizing downtime.

Rotary Airlock Valves for Your Dust Collector Applications

Heavy Duty Rotary Airlocks

Imperial Systems, Inc. Heavy Duty (HD) rotary airlock valves are engineered to outlast all other rotary airlocks for dust collectors. The unit offers the tightest flexible seal, allowing larger particles to easily pass through the valve while maintaining the air seal. Utilizing an Imperial Systems, Inc. HD airlock on a dust collection system allows for constant operation without the need to shut down and empty containers, minimizing employee exposure to dust and makes the system less susceptible to material back-up and filter damage.

heavy duty rotary airlock valves

Features

  • 3/8″ fiberglass reinforcement between each 3-ply rubber vane tip
  • Temperature range of -20ºF to 170ºF
  • Roller chain and sprocket drive including a heavy-duty gear reducer
  • Round flanged inlet and outlet (Note: optional square inlet and outlet available at no extra charge)
  • Premium efficiency 2 HP Motor; 230/460/60 Hz/3 phase motor – UL Listed
  • Sealed, 4-bolt flange outboard bearings
  • Primed and painted industrial enamel
  • Standard models are suitable for up to 24″ W.C.

Options

  • Various voltage motor
  • Variable speed selection
  • Viton® wipers; temperature range is -14ºF to 400ºF
  • Custom bolt patterns for inlet and outlets
  • Custom transitions available

Advantages

  • Engineered by the dust collection experts
  • Robust 3/8″ plate & 10 gauge carbon steel construction
  • Precise, strong welds
  • 8 vane removable rotor

Imperial Systems Flexible Tip Airlocks meets and exceeds the following criteria from FM Global:

“Concerning the need for a flexible vane tip in addition to a close tolerant metal tip vanes for rotary airlock valves my answer is as follows: The criteria for the vane tips are it must be at least 3-ply of rubber with fiberglass reinforcement between the plies of rubber and ⅜ in. thick.”  -FM Global

Low Profile Rotary Airlocks

Low Profile (LP) airlocks feature a compact design and are a less expensive alternative to our HD airlocks. The unit offers the tightest flexible seal to ensure minimal, if any, air leakage.It is used in low-pressure applications, such as on the bottom of a dust collector and for handling dry, free flowing, non-abrasive materials. It minimizes employee exposure to dust and makes the system less susceptible to material back-up and filter damage

low profile rotary airlock valves

Features

  • 3/16″ Nitrile Rubber (Buna-N) Wipers: Temperature Range is -20ºF to 170ºF
  • 6 vane removable rotor
  • Roller chain and sprocket drive including a heavy-duty gear reducer
  • Flange pattern is suitable for round or square connections
  • Premium Efficiency 2 HP Motor; 230/460/60 Hz/3 phase motor – UL Listed
  • Sealed, 4-bolt flange outboard bearings
  • Primed and painted industrial enamel
  • Standard models are suitable for up to 24″ W.C.

Options

  • Various voltage motor
  • Variable speed selection
  • Viton® wipers; temperature range is -14ºF to 400ºF
  • Custom bolt patterns for inlet and outlets
  • Custom transitions available

Advantages

  • Engineered by the dust collection experts
  • Robust 1/4″ plate & 10 gauge carbon steel construction
  • Precise, strong welds
Spark trap option shown mounted on Air-Port fume exhaust hood support leg/duct

Cast Iron Rotary Airlock

An economical airlock valve that’s suited for general use under dust collectors, cyclones, and hoppers. This airlock feeder boasts 8 blade rotors, precision machining, and a rugged cast iron housing for efficient operation.

cast rotary airlock valves

Advantages

  • Easily Retrofits into existing spaces
  • NFPA-69 Tested & Certified
  • Cast Iron Construction
  • 8 Blade Rotors
  • Sizes: 6, 8, 10, and 12-inch square

Options

  • Beveled Rotor Tips
  • Motion Switch
  • TEXP Motor (For use in hazardous environments)
  • Flexible Rotor Tips

Need a rotary airlock? We would be happy to discuss options with you and determine which type of airlock is the best fit for your facility.

Rhino Drum explosion tested drum kit

Have you seen our Rhino Drum?

The Rhino Drum is a low maintenance alternative to airlocks that meets the NFPA 69 Standard for ST-1 dusts. It has tool free, and can withstand an explosion up to 7psi.

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