WELCH 2047B Dryfast Diaphragm Vacuum Pump 2.5 CFM, 28.5 HG, 115V




Specifications & Description
Head ConfigurationDual Heads
Wetted PartsPTFE, Kalrez®
Free-Air Capacity (CFM)2.5
Free-Air Capacity (LPM)70.8
Free-Air Capacity (LPH)4248
Max Flow Rate (CFM)2.45
Max Flow Rate (Liters/min)70
Max Vacuum (in Hg)28.5
Max Vacuum (mbar)48.1
Max Vacuum (mm Hg)36.1
Max Vacuum (torr)36.1
Noise Level (dB)53
Port Size1/4" hose barb
Max Temperature (° F)104
Max Temperature (° C)40
Duty CycleContinuous
Power (VAC)115
Power (amps)2.65
Power (Hz)60
Height (in)8.875
Length (in)13.875
Height (cm)22.54
Length (cm)35.24
Height (mm)225.4
Length (mm)352.4
Motor hp1/4
DescriptionVacuum Pump, PTFE, High Flow, 70 L/min, 115V

For Floor Model Rotovaps up to 50 L
capacity. Strip Ethanol or Water at
fastest rates even at Room Temperature.
Add Welch #700458 Regulator/Gauge (see below)
for friendly and precise and steady vacuum control.
This regulator also helps keep valves clear so all
runs during daily operation have maximized stripping.
For longest membrane life, finish each run with a
5-minute air purge

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