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Dry Screw Vacuum Pumps


  • Chemical & Pharmaceutical Processing
  • Solvent Distillation
  • Solvent Recovery
  • Crystallization
  • Vapor Coating

Please see model variants below

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  • Brand
  • SDV
  • KDP


Tuthill has been manufacturing industrial pumping solutions on the southside of Chicago since 1927 with a clear value-differentiation in the marketplace and focused growth in life-foundational markets. Ali Yaqoob Trading represents Tuthill's Process Pumps, Lubrication & Circulation Pumps, Vacuum Pump, Flow Meters, and Blowers divisions.

SDV Variable Pitch, Screw-Type Dry Vacuum Pump

Screw-type dry vacuum pump with patented variable pitch rotor design commonly used in chemical and pharmaceutical processing.

Models: SDV120, SDV200, SDV320, SDV430, SDV800


  • Patented variable pitch rotor design increases efficiency and lowers temperatures
  • No oil or water in contact with process gases
  • Can handle both condensible vapors and some solids without leaving residue
  • Capable of full pumping speed from atmospheric pressure to 1 Torr (1.3 mbar a)
  • Can achieve ultimate vacuum as low as 0.01 Torr (0.013 mbar a)
  • No metal-to-metal contact between operating parts
  • Quiet operation
  • Niflon coated internals reduce damage from corrosive or condensable gases

The SDV’s space saving C-face motor design eliminates the need for motor coupling and guard. It features a short gas path through the pump for quick discharge.

KDP Screw-Type Dry Vacuum Pump

Model: KDP150, KDP330, KDP400, KDP800

Screw-type dry vacuum pump designed to handle process by-products: liquids, condensate and even small particles.


  • Simple, robust design can handle process by-products – liquids, condensate, and even small particles
  • No oil or water in contact with process
  • No contact between operating components in the casing
  • Full pumping speed from atmospheric pressure down to 1 Torr; ultimate pressure 0.1 Torr (.05 Torr on Model KDP-800)
  • Quiet operation – less than 85 dB(A)
  • Short gas path through the pump for quick discharge
  • Extended shaft for either V-belt or direct drive
  • Casing and rotors are made of ductile iron, PFA coated.

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