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Product Gallery Welch 8905A Direct Drive Vacuum Pump - Chemtech Scientific

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Welch 8905A Direct Drive Vacuum Pump

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$ 2,012.75

 $ 2,425.00
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*****ALERT*****

Manufacturer Welch Vacuum has replaced this product line with the Welch CRVpro series. This pump is no longer in production.

The Welch CRVpro series is the latest innovation in the high vacuum, direct-driven vacuum space. Vacuum users can expect increased reliability and longer service live when compared to other direct drive, rotary vane vacuum pumps.

  • Consumes up to 36% less oil than comparable pumps
  • Runs 10°C cooler than comparable pumps. This reduced the degradation of vacuum pump oil, increasing the running time between service intervals.
  • Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals.
  • Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts. 

    -------------------------------------------------------------------------------------------------------------------

    The Welch 8905A Direct Drive vacuum pump is a robust vacuum pump for applications requiring pressures < 50 Torr. The  8905A achieves < 0.050 Torr with a pumping speed of 51 liters/min (1.8 CFM).

    These small direct drive, oil sealed vacuum pumps should not be operated continuously at pressures above 50 Torr. Operating this vacuum pump at higher pressure will induce excessive oil spraying from the exhaust of the vacuum pump causing premature failure and void warranty. Please consult your Chemtech Scientific Representative for consultation, should the ultimate pressure of your process run above 50 Torr

    What's included 1 qt vacuum oil
    Common accessory, not included Exhaust Filter
    Pumping Speed 1.8 CFM (51 lit/min.)
    Max. Vacuum 0.050 Torr
    Oil Capacity 0.42 qts
    Tubing Needed Accepts 3/16" or 7/16" ID hose
    Inlet Connection Unibarb (3/4 -20)
    Intake / Exhaust threads 3/4-20
    Pump RPM @ 60 hz 3450
    Dimensions LxWxH 14.5x5.1x8.4
    Weight 24.5 LBS
    Wiring Wired for 115v, 60 Hz, 1 ph with N. American 115v Plug

    *****ALERT*****

    Manufacturer Welch Vacuum has replaced this product line with the Welch CRVpro series. This pump is no longer in production.

    The Welch CRVpro series is the latest innovation in the high vacuum, direct-driven vacuum space. Vacuum users can expect increased reliability and longer service live when compared to other direct drive, rotary vane vacuum pumps.

    • Consumes up to 36% less oil than comparable pumps
    • Runs 10°C cooler than comparable pumps. This reduced the degradation of vacuum pump oil, increasing the running time between service intervals.
    • Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals.
    • Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts. 

      -------------------------------------------------------------------------------------------------------------------

      The Welch 8905A Direct Drive vacuum pump is a robust vacuum pump for applications requiring pressures < 50 Torr. The  8905A achieves < 0.050 Torr with a pumping speed of 51 liters/min (1.8 CFM).

      These small direct drive, oil sealed vacuum pumps should not be operated continuously at pressures above 50 Torr. Operating this vacuum pump at higher pressure will induce excessive oil spraying from the exhaust of the vacuum pump causing premature failure and void warranty. Please consult your Chemtech Scientific Representative for consultation, should the ultimate pressure of your process run above 50 Torr

      What's included 1 qt vacuum oil
      Common accessory, not included Exhaust Filter
      Pumping Speed 1.8 CFM (51 lit/min.)
      Max. Vacuum 0.050 Torr
      Oil Capacity 0.42 qts
      Tubing Needed Accepts 3/16" or 7/16" ID hose
      Inlet Connection Unibarb (3/4 -20)
      Intake / Exhaust threads 3/4-20
      Pump RPM @ 60 hz 3450
      Dimensions LxWxH 14.5x5.1x8.4
      Weight 24.5 LBS
      Wiring Wired for 115v, 60 Hz, 1 ph with N. American 115v Plug

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