Rotary airlock valve for any application

VJ and VJOT Series

Meet Kice’s most popular rotary airlock valve, backed by decades of proven performance in bulk material handling operations worldwide. Every VJ and VJOT Series rotary airlock valve has been precisely cast at our CFM Corporation foundry.

All-purpose design for standard applications
Heavy-duty cast-iron construction
Minimal maintenance and long service life
Rotor sizes from 6” to 30”

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Standard rotary airlock for pneumatic conveying

VJ/VJOT rotary airlock valve applications

The VJ/VJOT Series rotary airlock valve is a workhorse, engineered for a wide range of pneumatic conveying and dust collection systems. The VJOT’s inboard-bearing, drop-through airlock design, featuring external bearings and larger shaft diameters, delivers extra durability for demanding operations. No other airlock is as versatile or cost-effective.

Standard rotary airlock valve features

Durable airlock construction

Cast-iron housing and rotors with eight blades
Tight rotor clearances (0.003”–0.005”)
Rotor diameters from 6”–30”

Dependable performance

Heavy-duty airlock construction for a variety of materials
Designed for consistent and reliable operation
Smooth integration with pneumatic conveying systems

Hassle-free airlock maintenance

Simple, accessible design for quick service
Interchangeable with existing Kice rotary airlock valve models

Tamar Seal technology

Shaft-sealing technology for rotary airlock valve

Kice’s VJOT rotary airlock valve comes with Tamar shaft-sealing technology, featuring zero-leakage protection and easy sealant change-out while equipment is running. With no fragile faces, springs, or other breakable components in the seal cartridge, Tamar seals extend the airlock’s service life and reduce maintenance.

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)

Tailored airlock design options

Special clearances for temperature and material needs
Square or round inlets/outlets
Shallow-depth rotors for precision flow
Custom coatings and platings (hard chrome, nickel, Teflon^®)
Bolt-on pans and surge hoppers for drop-thru rotary airlocks

Custom Features Gallery

Tamar seals

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