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Welch™ Standard-Duty Vacuum Pumps

Compact, economical WOB-L™ pumps for aqueous applications

Manufacturer: welch™  2511B01

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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. 01-055-60

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Description & Specifications


Model 2511
For Tube Size (Metric) 0.5cm
Weight (English) 5 lb.
Width (English) Exterior 4.5 in.
Certifications/Compliance CE
For Tube Size (English) 0.18 in.
Includes Liquid trap on inlet, vacuum gauge and adjustment knob, exhaust muffler, suction cup feet and handles for convenient transportation
Pressure 33psi
Flow Rate 11L/min.
Length (Metric) 19.4cm
Shipping Weight (Metric) 2.7kg
Height (Metric) 19.1cm
Height (English) Exterior 7.5 in.
Weight (Metric) 2.3kg
Length (English) Exterior 7.6 in.
Electrical Requirements 115V 60Hz
Shipping Weight (English) 6 lb.
Horsepower 0.03hp
Voltage 115V
Width (English) 4.5 in.
Height (English) 7.5 in.
Length (English) 7.6 in.
Hertz 60Hz