Welch Model
2032
2042
2034
2044
2037
2047
Free air Displacement
CFM (L/min) @ 60Hz
CFM (L/min) @ 50Hz
0.9 (25)
0.75 (21)
1.2 (35)
1.0 (29)
0.9 (25)
0.75 (21)
1.2 (35)
1.0 (29)
1.8 (50)
1.5 (42)
2.5 (70)
2.1 (58)
Maximum Vacuum - in. Hg
29.85
29.85
29.6
29.6
28.5
28.5
Ultimate Pressure - Torr (mbar)
2 (3)
2 (3)
9 (12)
9 (12)
35 (47)
35 (47)
Maximum Continous Pressure
PSIG (Pascal)
0
0
0
0
0
0
Tubing needed, *I.D., inches
1/4
1/4
1/4
1/4
1/4
1/4
Weight - lbs (kg)
21 (9.6)
21 (9.6)
21 (9.6)
21 (9.6)
21 (9.6)
21 (9.6)
Catalog Number
Wired for 115V, 60Hz, 1 Phase with
North American 115V Plug
2032B-01
2042B-01
2034B-01
2044B-01
2037B-01
2047B-01
Catalog Number
Wired for 230V, 50Hz, 1 Phase with
European Schuko Plug
2032C-02
2042C-02
2034C-02
2044C-02
2037C-02
2047C-02
Catalog Number
Wired for 100V, 50/60Hz, 1 Phase
with North American 115V Plug
2032C-05
2042C-05
2034C-05
2044C-05
2037C-05
2047C-05
Motor H.P.
1/5
1/5
1/5
1/5
1/5
1/5
Motor Voltage
50/60Hz
60Hz
50/60Hz
230V
115V
100V
230V
115V
100V
230V
115V
100V
230V
115V
100V
230V
115V
100V
230V
115V
100V
Motor Amps
230V 50Hz (N.L. - F.L.)
115V 60Hz (N.L. - F.L.)
100V 50/60Hz (N.L. - F.L.)
0.4 - 0.6
0.9 - 1.6
0.7-1.3 / 0.8-1.4
0.4 - 0.6
0.9 - 1.6
0.7-1.3 / 0.8-1.4
0.4 - 0.6
0.9 - 1.6
0.7-1.3 / 0.8-1.4
0.4 - 0.6
0.9 - 1.6
0.7-1.3 / 0.8-1.4
0.4 - 0.6
0.9 - 1.6
0.7-1.3 / 0.8-1.4
0.4 - 0.6
0.9 - 1.6
0.7-1.3 / 0.8-1.4
Section 6: SPECIFICATION
6.10
Specifi cation Table
* Note: Welch 1/4” ID hose P/N 331030-5
13
