Rugged Belt Drive Vacuum Pumps l DUOSEAL®
DuoSeal Pumps Rugged oil-seal pumps for a wide variety of vacuum needs, including Schlenk drying lines, freeze drying, degassing, concentrations, distillations, and more. Pulley drive enables low pump rpm operation – reduces friction, oil temperature, and oil degradation. Large oil reservoir minimizes contamination effects and extends maintenance intervals. Use of a cold trap is recommended to protect the pump and enhance vacuum levels. Refrigeration Servicing Pumps Special Welch DuoSeal pumps are fitted with components designed to withstand refrigerant contact. Models 1402B-46 and 1397B-46 include integrated handles.
Pump Range Interactive Catalog
(this file will open in a new browser tab)
DuoSeal Pumps Rugged oil-seal pumps for a wide variety of vacuum needs, including Schlenk drying lines, freeze drying, degassing, concentrations, distillations, and more. Pulley drive enables low pump rpm operation – reduces friction, oil temperature, and oil degradation. Large oil reservoir minimizes contamination effects and extends maintenance intervals. Use of a cold trap is recommended to protect the pump and enhance vacuum levels. Refrigeration Servicing Pumps Special Welch DuoSeal pumps are fitted with components designed to withstand refrigerant contact. Models 1402B-46 and 1397B-46 include integrated handles.
Pump Range Interactive Catalog
(this file will open in a new browser tab)
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL Unmounted PumpDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
CAD$13,117.00 CAD$11,870.89
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
Belt Kit For 1374 PumpFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
CAD$152.00 CAD$139.84
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
CAD$14,757.00 CAD$13,355.09
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V 60Hz 1Ph, FomblinizedDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Ru..
CAD$16,240.00 CAD$14,697.20
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, PUMP W/O MOTORDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
CAD$13,664.00 CAD$12,365.92
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 230/460V 60HZ 3PHDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoS..
CAD$15,226.00 CAD$13,779.53
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
CAD$9,214.00 CAD$8,338.67
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
CAD$8,901.00 CAD$8,055.41
Online Special $
-9 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL for Refrigeration, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
CAD$9,526.00 CAD$8,621.03
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 220V 50Hz 1Ph, without CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
CAD$9,994.00 CAD$9,044.57
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
Minor Repair Kit, 1376For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
CAD$759.00 CAD$698.28
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
Major Repair Kit, 1376For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
CAD$1,669.00 CAD$1,535.48
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
Chemstar Minor Repair KitFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of..
CAD$882.00 CAD$811.44
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
Chemstar Major Repair KitFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of..
CAD$1,992.00 CAD$1,832.64
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 230/460V 60HZ 3PHDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoS..
CAD$9,916.00 CAD$8,973.98
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR, 115V 60Hz 1PhFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
CAD$10,775.00 CAD$9,751.38
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR, 115V 60Hz 1Ph FomblinizedFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. Thes..
CAD$12,259.00 CAD$11,094.40
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR, Mounted without motorFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These ye..
CAD$10,385.00 CAD$9,398.43
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR, 100V 60HZ 1PHFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
CAD$11,009.00 CAD$9,963.15
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
V-Belt Kit For 1397For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of exper..
CAD$247.00 CAD$227.24
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
CAD$12,337.00 CAD$11,164.99
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
CAD$12,180.00 CAD$11,022.90
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL for Refrigeration, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
CAD$12,961.00 CAD$11,729.71
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 220V 50Hz 1Ph without CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads..
CAD$12,961.00 CAD$11,729.71
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, Refrigerant Pump, 230V 50 Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loa..
CAD$13,117.00 CAD$11,870.89
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
Minor Repair Kit, 1397For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
CAD$1,375.00 CAD$1,265.00
Online Special $
-8 %
Please Call to Confirm
Availability: Please Call to Confirm
Major Repair Kit, 1397For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
CAD$1,925.00 CAD$1,771.00
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 230V, 60Hz 3PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
CAD$13,117.00 CAD$11,870.89
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
CAD$4,490.00 CAD$4,063.45
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL PUMP MTD 115V, 60HZ 1PH FOMBLINDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads..
CAD$5,739.00 CAD$5,193.80
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
CAD$4,334.00 CAD$3,922.27
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V, 60Hz 1Ph, CSADeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged Duo..
CAD$4,685.00 CAD$4,239.93
Online Special $
-9 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 230V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
CAD$4,763.00 CAD$4,310.52
Online Special $
-9 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 230V 50Hz 1Ph, with CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Ru..
CAD$4,802.00 CAD$4,345.81
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V 60Hz 1Ph, Exp. Proof MotorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
CAD$5,973.00 CAD$5,405.57
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
CAD$6,520.00 CAD$5,900.60
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
CAD$6,403.00 CAD$5,794.72
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 115V, 60Hz 1Ph, CSADeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged Duo..
CAD$7,106.00 CAD$6,430.93
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 230V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
CAD$7,106.00 CAD$6,430.93
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 220V 50Hz 1Ph with Schuko Plug/CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vap..
CAD$7,027.00 CAD$6,359.44
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, 230/460V 60Hz 3PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSe..
CAD$7,574.00 CAD$6,854.47
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR Unmounted PumpFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
CAD$7,223.00 CAD$6,536.82
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR PUMP MOUNTED, 115V,60HZ,1PHFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. The..
CAD$7,691.00 CAD$6,960.36
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR Without MotorFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
CAD$7,574.00 CAD$6,854.47
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR, 220V 50Hz 1Ph with Schuko PlugFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs...
CAD$8,316.00 CAD$7,525.98
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR, 100V 50Hz 1PhFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
CAD$8,316.00 CAD$7,525.98
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR, MOUNTED PUMP 230V, 60HZ, 1PHFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. ..
CAD$8,238.00 CAD$7,455.39
Online Special $
-9 %
Please Call to Confirm
Availability: Please Call to Confirm
CHEMSTAR EXPL.PROOF PUMP 1402NFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These yea..
CAD$9,643.00 CAD$8,726.92
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL,PUMP 115/60 1PH EXP PRF MOTORDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.R..
CAD$8,628.00 CAD$7,808.34
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL,MOUNTED PUMP 115V/60HZ 1PHDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugg..
CAD$6,130.00 CAD$5,547.65
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, PUMP W/O MOTORDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
CAD$5,817.00 CAD$5,264.39
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, MOUNTED PUMP 115V, 60Hz 1Ph, CSADeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loa..
CAD$6,520.00 CAD$5,900.60
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL,MOUNTED PUMP 230V 50Hz 1Ph, with CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high v..
CAD$6,481.00 CAD$5,865.31
Online Special $
-10 %
Please Call to Confirm
Availability: Please Call to Confirm
DUOSEAL, MOUNTED PUMP 115V 60Hz 1Ph, Exp. Proof MotorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for hi..
CAD$8,042.00 CAD$7,278.01
Showing 1 to 54 of 54 (1 Pages)