Components
- Rotary Valves Overview
- Maximum-Duty Aerolock
- Heavy-Duty Aerolock
- Light-Duty Aerolock
- Blow-Through Aerolock
- Quick-Clean Aerolock
- Aerolock Accessories
Maximum-Duty Aerolock™ Rotary Valve
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The Maximum-Duty Aerolock™ rotary valve is engineered for continuous, 24-hour service in applications with pressure differentials up to 1.4 bar [20 PSI]. The wear life is even more outstanding when the differential is limited to 1.0 bar [15 PSI]. It is commonly used with some of the most challenging materials including parboil rice, filled pellets, PVC compound and diatomaceous earth.
Standard Maximum-Duty Aerolock Rotary Valve Advantages offered by the Maximum-Duty Aerolock Rotary Valve
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Features of the Maximum-Duty Aerolock Rotary Valve
Bearings | Rotors | Housings | Seals | Drives
Housing and end plates
The Maximum-Duty Aerolock rotary valve housing and end plates are machined from castings and are made of wear iron or stainless steel. The shear action inlet reduces stress on the rotor and housing. They have round or square flanges and can have custom coatings applied to interior surfaces for demanding applications. These components can be coated for increased longevity.
Bearings - thrust end
The radial-thrust, tapered roller bearing assembly is preloaded to provide minimum rotor deflection. This results in close rotor clearance to maximize rotary valve wear life. Undesirable movement along the longitudinal axis is prevented by the collar which locks the bearings to the shaft. A grease fitting is provided for ease of maintenance.
Bearings - drive end
Tapered roller bearings used in a preloaded carriage provide precise shaft alignment to the rotary valve. The bearing carriage is equipped with grease fittings, making it easy to renew lubrication.
Seals
- T3 seal
The general purpose T3 seal is used on both ends of the rotor shaft. The assembly is comprised of a Teflon® collar anchored to the shaft and two steelcased quad ring seals which fit over the Teflon collar. The seals remain stationary while the Teflon collar rotates with the shaft. The Teflon’s slick surface allows quad rings to operate in dry mode with good service life. - Packing gland seal
The packing gland seal uses Teflon impregnated yarn. As wear occurs, the seal’s effectiveness can be increased by tightening the collar. - Air purge seal
The air purge seal is available for severe service applications. Plant air is introduced through end plates and the air diffuser ring. This provides a zone of higher pressure outside the seals than inside the Aerolock. - G5 seal
The G5 seal is for high service applications and includes a quad ring Buna-N seal on a stainless steel insert.
Gaskets
The gaskets provide a positive seal between Aerolock rotary valve flanges and components directly above and below. They are made of 6 mm [.25 in] thick white neoprene and are comprised of sections that interlock to ensure they stay in place and provide an airtight seal.
Rotors
The Aerolock rotary valve rotors are engineered for rugged applications. The shafts are sized for torsion and bending loads far above standard drive horsepower requirements. Ten blades maintain a minimum three-blade labyrinth seal to minimize air leakage. A choice of rotors allows the Maximum-Duty rotary valve to be tailored to your application. The hubbed rotor, when used in conjunction with air purge seals, provides longer shaft seal life and less end plate wear, especially in applications with mildly abrasive materials. The open-end rotor with relieved tips is used to reduce drag on materials that tend to build up on the housing and end plates. Materials of construction include steel and stainless steel.
