SD-Series Airlocks
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Our standard rotary airlock valve / feeder is offered in 3 different sizes and 4 different configurations - all featuring outboard bearings and seals. All airlocks come standard with rotors with relieved tips and sides, as well as tapped endplates. Our standard seal is compression-type, u-cup design that requires no field adjustments, and is maintenance free for the life of the seal (Unlike the standard packing gland seal, which requires retightening after hours of initial operation). All of our airlocks feature a drop-in compatibility with a competing airlock product (call for details).
Sizes Offered: 8", 10", 12"

All Airlocks come in square flange, except for 8" - which comes in both square and round.

Design Standards:

Type A.1 - General Duty

  • Cast Iron Housing & End Plates
  • 8-vane open end CS rotor, relieved tips standard
  • Shaft seal purge taps, standard

Type B.1 - Mild Abrasive

  • Cast Iron Housing & End Plates
  • Interior of the housing and endplates chrome plated
  • 8-vane open end CS rotor with adjustable and replaceable hardened steel tips
  • Shaft seal purge taps, standard

Type C.1 - Corrosion Resistant

  • Cast Iron Housing & End Plates
  • Interior of the housing and endplates chrome plated
  • 8-vane open end SS rotor
  • Inlets and outlet throats coated with FDA epoxy
  • Shaft seal purge taps, standard

Type D.1 - Moderately Abrasive

  • Interior of the housing and endplates chrome plated
  • 8-vane closed end CS rotor with adjustable and replaceable hardened steel tips
  • Shaft seal purge taps, standard