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Liquid Ring Vacuum Pumps

Tuthill’s suite of liquid ring pumps will be able to dependably handle your specific application


  • Vacuum Packaging
  • Solvent Distillation
  • Extruders
  • Sterilization
  • Degasifiers
  • Evaporators
  • Freeze Drying
  • Vapor Coating

Please see model variants below

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  • Brand
  • A Series Single-Stage
  • KLRC Two-Stage


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.

Model: A5, A10, A15, A20, A75, A100, A130, A200, A300

Built to run in the most severe of industrial conditions. Unique design allows pump to operate flooded, without damage.


  • Simplistic in design, rugged in construction
  • Built to run in the most severe of industrial conditions
  • Unique design allows pump to operate flooded, without damage
  • Flat power curve over entire vacuum range prevents motor overload
  • No contact between operating components in the casing
  • Pull down to 29” Hg – 25 Torr (33 mbar a)
  • Increased water handling capability prevents heat build-up, extends life of single mechanical seal
  • Reduced stress on motor shaft and bearings
  • Available in stainless steel, bronze, or cast iron (A200 & A300 models available in cast iron)
  • Compact, close-coupled design eliminates need for interstage manifold or motor alignmentA Series pumps are not as susceptible to cavitation compared to flat plate design because the flow path through the pump is an axial flow. This allows the velocity through the pump to be unchanged and carries the air out effortlessly.

It is not unusual for these pumps to run 24/7 operation for years without maintenance.

A Series pumps are vibration-free and environmentally friendly with no oil used for lubrication, and no oil discharged to atmosphere.
Complete, self-contained systems including liquid recovery and recirculation are available.

Model: KLRC75, KLRC100, KLRC125, KLRC200, KLRC300, KLRC525, KLRC526, KLRC950, KLRC951

Ideally suited for pumping wet mixtures, even slugs of liquid. Pull down as low as 4 Torr (5.3 mbar).


  • Ideally suited for pumping wet mixtures
  • Can pull down as low as 4 Torr (5.3 mbar a)
  • Low-pressure performance is limited by the vapor pressure of the sealing liquid: water, oil or process liquids
  • Complete engineered system solutions available: instrumentation, controls, piping & valves
  • Self-contained liquid recovery & recirculation are available
  • Center-anchored tie rods allow access to either end of the pump without total disassembly
  • Double mechanical seals available in models KLRC75 through KLRC525 to meet API Piping Plan Requirements

Available in standard, all iron construction (no yellow metals) and 316 stainless steel.
Liquid ring pumps often require water-cooling, but air-cooling systems are available.

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