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Offset Airlock Valve

Offset Airlock Valve Offset Airlock Valve Manufacturer
Offset Airlock Valve Offset Airlock Valve Manufacturer

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 fillage efficiency
  • 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
  • Options available for specialisation
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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.

The granule type of product, especially if it is a plastic type, polythene or nylon etc., does not shear easily and consequently, without considerable care the standard drop-through type of valve leads to valve seizure and also considerable shock loadings.

To minimize these problems the Offset Rotary Valve ensures lower pocket fillage as its design means that the rotor is still being filled in the upward cycle with the pellets falling away at the shear point. Similarly, the pelican beak distributes the product across the full width of the rotor.

  • Body Vents
  • Air Purge Glands
  • Quick Release Rotors
  • Direct Coupled Drives
  • Hard Chrome Internals
  • Electro-less Nickel Plating
  • Shear Plate Deflectors
  • Speed Switch
  • Dropout Boxes
  • V.S. Drives
  • Flameproof Motors
  • Vent Boxes etc.

  • Bodies

    Cast Iron, Stainless Steel or Aluminium precision bored.

  • End Covers

    Cast Iron, Stainless Steel or Aluminium spigot located inbody for concentricity.

  • Rotor

    Fabricated Mild or Stainless Steel.

  • Bearings

    Generally sealed-for-life-ball type rigged outboard or high temperature above 250ºC

  • Shaft Seal

    Gland type with PTFE packing.

  • Drive

    TEFC geared motor unit side wall mounted to valve body and complete with taper lock sprockets chain drive all in an enclosed guard

Rectangular Rotary Airlock Valve Inlet Rectangular Offset Airlock Valve Technical Drawing

All dimensions are in mm unless otherwise stated

SIZE A A1 B B1 C D E F G H J K L M N O P R S T V W X Y kW
200 200 152 305 254 12 165 330 247 199 281 438 260 218 28 133 8 14 8 7 41 273 565 222 127 0.75
250 254 178 356 280 15 204 408 232 229 311 466 290 248 35 155 8 14 10 8 48 324 152 248 152 0.75
300 305 204 406 305 19 229 458 230 260 363 496 320 279 35 185 8 14 10 8 61 374 184 273 165 1.1
400 406 254 558 406 22 279 558 155 332 434 626 403 351 50 235 14 19 14 9 86 514 266 362 152 1.1
450 406 280 610 432 22 327 654 205 357 459 666 419 376 50 260 14 19 14 9 86 565 280 387 152 1.1
500 508 305 660 457 25 356 712 180 382 484 666 453 401 50 285 14 19 14 9 99 565 304 413 152 2.2
Offset Airlock Valve Circular Inlet Offset Airlock Valve Technical Drawing

All dimensions are in mm unless otherwise stated

SIZE ØA ØB C D E F G H J K L ØM N O ØP ØQ R S T kW
150 152 279 13 127 254 248 174 256 475 234 194 28 201 8 22 241 8 7 76 0.37
200 204 343 16 165 330 250 199 301 517 260 218 28 200 8 22 298 8 7 86 0.75
250 254 406 19 190 380 220 229 311 564 290 249 35 247 12 25 362 10 8 108 0.75
300 305 483 20 222 444 227 260 362 626 320 279 35 288 12 25 432 10 8 127 1.1
350 356 533 22 266.7 533.4 217 270 372 652 329 289 35 330 12 28 476 10 8 140 1.1
500 508 700 25 356 712 180 382 484 747 453 404 50 365 20 32 635 14 9 200 2.2