DuoSeal High-Vacuum Pumps

  • Rugged pumps for wide variety of applications
  • High contamination tolerance
  • Low maintenance and long life
Use these durable oil-seal pumps for numerous lab vacuum needs, including Schlenk drying lines, freeze drying, degassing, concentrations, distillations, and more. Pulley drive enables low rpm operation, reducing oil temperature, friction, and oil degradation. Large oil reservoir minimizes contaminant effects and extends maintenance intervals.


NOTE: Do not operate continuously at pressure above 10 Torr. Dual-voltage single phase models come wired for 115V operation; can be rewired for higher voltage operation.
$2,382.00 - $3,724.00USD / Each

6 variations of this product are available.

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Free-Air Capacity (CFM) Free-Air Capacity (LPH) Free-Air Capacity (LPM)
Availability Pricing
Welch DuoSeal High-Vacuum Pump; 0.9 cfm/1x10-4 Torr/115 V EW-79201-01 Mfr # 1400B-01
COMPARE
0.9 1530 25.5
$2,382.00USD / Each
Welch DuoSeal High-Vacuum Pump; 3.2 cfm/1x10-4 Torr/115 V EW-79201-02 Mfr # 1405B-01
COMPARE
3.2 5436 90.6
$3,386.00USD / Each
Welch DuoSeal High-Vacuum Pump; 5.6 cfm/1x10-4 Torr/115 V EW-79201-03 Mfr # 1402B-01
COMPARE
5.6 9516 158.6
$3,502.00USD / Each
Welch DuoSeal High-Vacuum Pump; 0.9 cfm/1x10-4 Torr/230 V EW-79201-11 Mfr # 1400C-02
COMPARE
0.9 1530 25.5
$2,568.00USD / Each
Welch DuoSeal High-Vacuum Pump; 3.2 cfm/1x10-4 Torr/230 V EW-79201-12 Mfr # 1405C-02
COMPARE
3.2 5436 90.6
$3,428.00USD / Each
Welch DuoSeal High-Vacuum Pump; 5.6 cfm/1x10-4 Torr/230 V EW-79201-13 Mfr # 1402C-02
COMPARE
5.6 9516 158.6
$3,724.00USD / Each
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