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

Custom Features Gallery

Rotary airlock valve with chain drive or direct drive option

Kice airlock drives

Relieved tips on rotary airlock for sticky products

Trailing edges relieved

Standard Kice rotors

Bolt-on rotor tips

Shallow depth rotors

Protective coating for rotary airlock valves

Coating and plating

Bolt-on pans

Air purge seals

Venting surge hopper for pneumatic conveying

Kice surge hoppers

Rotary airlock valve sizing

Size (in)	CFR	Weight (lb)
Size (in)	CFR	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

Drawings

VD square airlock VDOT square airlock Round bolt-on pan Square bolt-on pan Typical flange dimensions Round airlock flange Square airlock flange Series 71/72/73 sight glasses Round surge hopper Round surge hopper (Type II)Square surge hopper (Type I)VD direct drive airlock VDX direct drive airlock

Manuals

VD and VDOT Series Airlock Benches