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Welch™ Standard-Duty Vacuum Pumps

Compact, economical WOB-L™ pumps for aqueous applications

Manufacturer: welch™  2585B50

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May be used with buffer solutions but are not recommended for use with acids, bases or organic vapors.

Products in this grouping may have voltages other than the standard US 110/115V. Please review and confirm your selection before completing your order. Some of these products may not be returned.

Catalog No. 01-257-73

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Description & Specifications


Model 2585
Weight (English) 24.5 lb.
Width (English) Exterior 8 in.
For Tube Size (English) 0.25 in.
Includes Liquid trap on inlet, vacuum gauge and adjustment knob, exhaust muffler, suction cup feet and handles for convenient transportation
Flow Rate 201L/min.
Voltage 115V
Horsepower 0.33hp
Shipping Weight (English) 32 lb.
Shipping Weight (Metric) 14.5kg
Length (Metric) 43.1cm
Hertz 60Hz
Height (English) 12 in.
Height (Metric) 30.5cm
Height (English) Exterior 12 in.
For Tube Size (Metric) 0.7cm
Weight (Metric) 11.1kg
Length (English) Exterior 17 in.
Electrical Requirements 115V 60Hz
Width (English) 7.5 in.
Length (English) 17 in.
Certifications/Compliance CE