This item is now discontinued. We recommend the following as suggested replacements: WZ-79206-03

Welch 8890C-77 High-vacuum gear pump systems for filtration, 230 VAC

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Welch Mfr # 8890C-77 – Item # WZ-79206-15
Complete systems for rotary evaporation, vacuum, and filtration manifolds
  • Dual-stage gear pumps provide deep vacuum to 1 x 10–1 torr
  • Rotating gears do not mesh — very tolerant of vapor and provide smooth, low-maintenance operation
  • Use for distillation and removing high boiling point solvents
  • Exhaust oil recycler coalesces oil mist and puts it back into the pump to prevent build up of oil residue in filter
  • Gear design allows pump to operate continuously between 0.1 torr and at atmosphere, unlike a rotary vane pump
  • 1 year warranty

SPECS & DESCRIPTION

Specifications & Description

  • Wetted Parts304 Stainless steel, Viton®, Powdered Metal
  • Free-Air Capacity (CFM)0.9
  • Free-Air Capacity (LPM)25.5
  • Free-Air Capacity (LPH)1530
  • Max Flow Rate (CFM)0.91
  • Max Flow Rate (Liters/min)26
  • Max Vacuum (in Hg)29.92
  • Max Vacuum (mbar)0.13
  • Max Vacuum (mm Hg)0.1
  • Max Vacuum (torr)0.1
  • Tank Size (Qt)0.48
  • Tank Size (oz)15.2
  • Tank Size (Liters)0.45
  • Tank Size (Gal)0.12
  • Oil Capacity (oz)15.2
  • Oil Capacity (Liters)0.45
  • Port Size3/8\" hose barb
  • Max Temperature (° F)140
  • Max Temperature (° C)60
  • Duty CycleContinuous
  • Power (VAC)230
  • Power (Hz)50
  • Motor TypeSingle-phase TEFC, motor speed 3450 rpm at 60 Hz
  • Height (in)8.1875
  • Length (in)14
  • Height (cm)20.8
  • Length (cm)35.56
  • Height (mm)208
  • Length (mm)355.6
  • Motor hp1/4
  • DescriptionHigh-vacuum gear pump systems for filtration, 230 VAC
  • Warranty1 year
1 Year WarrantyConformite Europeenne

Key Features

  • Dual-stage gear pumps provide deep vacuum to 1 x 10–1 torr
  • Rotating gears do not mesh — very tolerant of vapor and provide smooth, low-maintenance operation
  • Use for distillation and removing high boiling point solvents
  • Exhaust oil recycler coalesces oil mist and puts it back into the pump to prevent build up of oil residue in filter
  • Gear design allows pump to operate continuously between 0.1 torr and at atmosphere, unlike a rotary vane pump
  • 1 year warranty

REVIEWS

Q&A

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