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Rotary airlock valve for sticky products

VD and VDOT Series

Kice’s VD and VDOT Series rotary airlock valve is engineered to handle sticky, difficult-to-convey materials. Unlike other airlocks, it comes with an air jet that dislodges material from rotor pockets as they enter the airstream.

  • Air-assisted, jet-under design
  • Reduced risk of binding and blockage
  • Durable construction for long service life

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Rotary airlock valve for sticky materials

VD/VDOT rotary airlock valve applications

The VD/VDOT rotary airlock valve is ideal for processing sticky grains, moist ingredients, high-fiber feed, powdered food products, fine chemicals, and mineral blends that require smooth pneumatic transfer. The VDOT variant features outboard bearings for additional protection. Please note that the VD/VDOT airlock must be the only rotary valve on the line or the first rotary valve in a sequence.

Standard rotary airlock valve features

Jet-under design

  • Efficient clearing of rotor pockets during operation
  • Reduced buildup and blockage in sticky material handling
  • Designed to deliver smooth, consistent airflow

Durable construction

  • Precision-machined airlock housing
  • Eight-blade, full-depth rotors fabricated from durable cast iron

Custom rotary airlock valve options

Advanced sealing and monitoring

  • Optional Tamar shaft seals (standard or nonstandard sizes)
  • Air purges and predictive maintenance sensors available
  • Zero-leakage protection with sealant replenishment alerts

Optimized for abrasive and fibrous materials

  • Trailing edges relieved (TER) for sticky materials
  • Inlet plows to reduce product binding at nip points
  • Assorted bolt-on rotor tips (AR steel, flexible urethane)
  • Outboard bearings available for added protection

Tailored airlock design options

  • Special clearances for temperature and material needs
  • Shallow-depth rotors for precision flow
  • Protective coatings and platings (hard chrome, nickel, Nedox)
  • Bolt-on pans and surge hoppers for drop-thru rotary airlocks
  • Square or round inlets/outlets
  • Chain-driven or direct-drive configurations

Rotary airlock valve sizing

Size (in) CFR Weight (lb)
Inboard Model Outboard Model
6x6x6 0.07 100 120
8x6x6 0.16 145 175
10x6x6 0.27 160 200
10x8x8 0.33 180 230
12x8x8 0.55 280 340
14x10x10 0.67 340 440
16x12x12 1.1 435 550
18x12x12 1.45 470 580
18x14x14 1.67 490 670
20x12x12 1.9 550 850
20x15x15 2.3 600 900
24x15x15 3.2 900 1,050
30x24x24 7.32 1,500 2,920