Rotary valve
Rotary valve
KEY FEATURES
- Maximum number of blades in contact with body at one time without affecting throughput.
- Good throat opening at valve entry allowing high pocket filling efficiency.
- Minimum clearance at rotor tips and sides with body.Robust body adequately stiffened to prevent distortion.
- Heavy shaft diameters minimising deflection.
- Outboard bearings for non-contamination.
- Packing gland type seals.
- Maximising valve speed to 25 rpm -prolonging life, ensuring good throughput.
- Precision machining of components.
The prime function of a Rotary Valve is to regulate the flow of dust, powder and granular products from one chamber to another whilst maintaining a good airlock.
In the dust filtration field a good airlock is essential on cyclone and bag filter applications in order that the manufacturers quoted high dust collection efficiencies can be maintained. Airlocks are also important in the pneumatic conveying industry, where product is regulated into a pressure or vacuum conveying line while minimising air leakage.
With Rotolok there are no double standards, all our standard valves are precision machined for close tolerances and minimal eccentricities.
Pressure differentials to 20psi and temperatures to 400°C (752°F) are considered the norm and extreme pressures and temperatures can be accommodated with special designs. If your application requires such considerations contact the Rotolok Engineering team.
Rotolok Rotary Valves and Airlocks have ATEX Covered
Following successful completion of the rigorous testing process Rotolok can offer a complete range of Rotary Valves certified as suitable for use as an explosion barrier to a maximum of 10bar and for explosion isolation for St1 and St2 dusts.
Due to careful design of the internal components the overall dimensions are very similar to our standard range of valves and we can offer a selection of optional features such as purged shaft seals, scalloped rotor pockets and staggered rotor pockets without the throughput being greatly reduced or the barrier efficiency being affected.
SPECIFICATIONS
- BODIESCast Iron, Stainless Steel or Aluminium precision bored.
- END COVERSCast Iron, Stainless Steel or Aluminium spigot located inbody for concentricity.
- ROTORFabricated Mild or Stainless Steel.
- BEARINGSSealed-for-life ball type rigged outboard.
- SHAFT SEALGland type with PTFE packing.
- DRIVETEFC geared motor unit side wall mounted to valve body and complete with taper lock sprockets and chain drive all in an enclosed guard.
