10
Section 6: SPECIFICATIONS
Welch Model
2090
2085
Free Air Displacement
CFM (L/min)@60Hz
4.5 (127)
6.9 (176)
Ult. Press., Torr (mbar)
25 (33)
100 (133)
Max Vacuum, in. Hg
29
26
Number of Vacuum Stages
2
1
Motor Horsepower
1/2
1/2
Vacuum Restart
yes
yes
Minimum Tubing Needed, I.D. in.
7/16
7/16
Weight, lbs. (kg)
52 (23.6)
52 (23.6)
Catalog Number
2090W-01
2085W-01
Motor Voltage
115V / 208-230V / 1PH / 60HZ
Motor Amps
9.8 / 4.9-4.9
Motor Hazardous Classification
CLASS 1 DIV 1 GROUP C,D
CLASS 2 DIV 1 GROUP E,F,G
