Welch™ Direct-Drive High-Vacuum Pumps: Model 8907

Compact, portable, two-stage direct-drive pumps suitable for vacuum ovens, freeze dryers, concentrators, and chambers

Manufacturer: Welch™ 8907C02

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Catalog No. 01-257-68

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    Horsepower 0.5hp
    Voltage 230V
    Hertz 50Hz
    Height (English) 9.62 in.
    Height (Metric) 24.3cm
    Width (English) 6.5 in.
    Width (Metric) 16.5cm
    Length (English) 18.5 in.
    Length (Metric) 47.1cm
    Shipping Weight (English) 46 lb.
    Shipping Weight (Metric) 21kg
    Amperage 2.1A
    Includes Line cord, switch, plug and vacuum Oil, integral isolation valve
    Motor Speed 1725rpm
    Pressure 1 x 10-4 torr
    Certifications/Compliance CE
    Flow Rate 2.2 cfm
    For Use With (Equipment) Vacuum ovens, freeze dryers, concentrators and chambers
    Electrical Requirements 230V 50Hz
    Dimensions (L x W x H) 18.5 x 6.5 x 9.62 in. (47.1 x 16.5 x 24.3cm)
    Capacity (English) 14 gal./9min.
    Capacity (Metric) 53L/min.
    For Tube Size (English) 0.56, 0.81 in.
    For Tube Size (Metric) 1.1, 2cm
    Model 8907
    Noise Level 50dBA
    Type Direct-Drive High-Vacuum Pump
    Weight (English) 40 lb.
    Weight (Metric) 18.1kg
    Dimensions (L x W x H) Exterior 18.5 x 6.5 x 9.62 in. (46.9 x 16.5 x 24.3cm)
    Width (English) Exterior 6.5 in.
    Height (English) Exterior 9.62 in.
    Height (Metric) Exterior 24.3cm
    Length (Metric) Exterior 46.9cm
    Width (Metric) Exterior 16.5cm
    Length (English) Exterior 18.5 in.

    All models are an efficient two-stage design for continuous high vacuum operation. Use gas ballast valve to prevent condensation of vapors and to remove water vapor contamination from oil reservoir. Not for continuous operation at pressures above 10 torr.

    • Available in pumping ranges of 1.8 to 11.3cfm (51 to 320L/min.)
    • Ultimate pressure to 1 x 10-4 torr (based on model)
    • Aluminum UNIBARB™ style inlet connector accepts two sets of tubing I.D. (3/16 to 13/16 in. [5 to 20mm]) and has a screen
    • Outlet connector has a 1-20 thread (Model 8905A has a 3/4-20 outlet connector thread)
    Models 8907
    Include integral isolation valve to prevent oil and air contamination of the system in the event of a power failure.

  • Description & Specifications
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