Rotary Valves and Rotary Airlock

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Heavy Duty Drop Thru Rotary Airlock

3Sigma Systems offers the Drop Thru Rotary Airlock valve, manufactured by Carolina Conveying. This rotary airlock valve is considered the standard unit and used in most applications, and is available in round or square. The Drop Thru Rotary Airlocks are made with a heavy duty design -- thick castings, thick blade rotors with oversized shafts, outboard regreasable bearings and gland type shaft seals. There are various rotor options available for this valve, such as open end, closed end, fixed blades, adjustable blades, beveled edges, scalloped pockets, reduced volume, quick release, Teflon coated, abrasion resistant tips, flexible rubber tips, etc. Applications vary from bottom of dust collectors to pneumatic conveying. Sizes available: 5, 6, 8, 10, 12, 14, 16, 18, 20, 24, 30 and 36 inch.

Heavy Duty Drop Thru Rotary Airlock Valves - Carolina Conveying

Side Entry Rotary Airlock

3Sigma Systems offers the Side Entry Rotary Airlock Valve by Carolina Conveying. This rotary airlock valve is used in applications where material shearing is an issue. It is called a Side Entry Rotary Airlock Valve because the material enters the side of the rotor instead of the top in the offset inlet and outlet flanges. On a normal valve, shearing takes place as the rotor rotates into the housing. When these two straight edges meet on a typical drop thru rotary airlock, it provides a pinch area where the material can shear and/or jam. On a side entry rotary airlock, the material is caught on the upswing of the rotor blades so that the material is constantly falling away from the shear point. In this type of valve, the rotor pockets do not fill up completely. This also reduces the chances of shearing. An additional feature of this rotary valve is that the throat is V shaped, which helps push product out of the way. Side Entry Rotary Airlock valves are available in sizes 6, 8, 10, 12, 14, 16 and 20 inch.

Side Entry Rotary Airlock Valves - Carolina Conveying

Blow Thru Rotary Airlock

3Sigma Systems offers the Blow Thru Rotary Airlock Valve by Carolina Conveying. This type of rotary valve is only used in pneumatic conveying applications, using both positive pressure and vacuum. Blow thru rotary airlocks have two ports on the sides of the valve near the bottom. The conveying line pipe connects directly to the blow thru rotary valve, as the air stream flows through the rotor pockets. This rotary valve design is very efficient, working best with materials that tend to hang up in the rotor pockets. This valve is not recommended on abrasive products due to the vanes quickly wearing. This rotary airlock valve is also excellent with applications that have height limitations. Convey line adapters are provided accordingly in each application. Blow Thru Rotary Valves available in 6, 8, 10, 12 and 16 inches.

Blow Thru Rotary Valve

Easy Clean Rotary Airlock

3Sigma Systems offers the Easy Clean Rotary Airlock Valve by Carolina Conveying. This type of rotary valve is used in sanitary or food applications where the valve internals need to be regularly cleaned. This rotary airlock valve is also useful in non-sanitary applications that require product change over. The easy clean rotary airlock valve features a quick release rotor, which can be removed by hand without having to disconnect the drive package. Disassembly is easy and no hand tools required, due to hand knobs replacing the end cover bolts. Slide rails are available to support the rotor and end cover once it has been pulled apart.

Easy Clean Rotary Valves

Standard Duty Rotary Airlock

3Sigma Systems offers the Standard Duty Drop Thru Rotary Airlock Valve by Carolina Conveying. This rotary valve is a less expensive alternative to the Heavy Duty Airlocks, and is ideal for applications where a more robust valve is not required.  The Standard Duty Rotary Airlock Valve is common in gravity flow or low-pressure differential applications, such as on the bottom of a dust collector. This type of rotary airlock valve is used for handling dry, free flowing, non-abrasive materials.  The Standard Duty Drop Thru Rotary Airlock Valve is specially designed for tight tolerances to insure minimal air leakage.  All standard duty rotary airlock valves are cast iron with a mild steel closed end rotor.  Valves are available in round and square flange, available sizes 6, 8, 10 and 12 inches.

Standard Duty Rotary Valves
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