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
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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)
2-3 Days
Availability: 2-3 Days
DUOSEAL Unmounted PumpDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$9,384.60
2-3 Days
Availability: 2-3 Days
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..
Ships from Mississauga, ON
2-3 Days
CAD$103.10
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
Ships from Mississauga, ON
2-3 Days
CAD$10,693.10
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V 60Hz 1Ph, FomblinizedDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Ru..
Ships from Mississauga, ON
2-3 Days
CAD$11,667.20
2-3 Days
Availability: 2-3 Days
DUOSEAL, PUMP W/O MOTORDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
Ships from Mississauga, ON
2-3 Days
CAD$9,777.20
2-3 Days
Availability: 2-3 Days
DUOSEAL, 230/460V 60HZ 3PHDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoS..
Ships from Mississauga, ON
2-3 Days
CAD$10,882.10
2-3 Days
Availability: 2-3 Days
DUOSEAL Unmounted PumpDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$5,873.60
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$6,658.70
2-3 Days
Availability: 2-3 Days
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
Ships from Mississauga, ON
2-3 Days
CAD$6,367.90
2-3 Days
Availability: 2-3 Days
DUOSEAL for Refrigeration, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
Ships from Mississauga, ON
2-3 Days
CAD$6,876.70
2-3 Days
Availability: 2-3 Days
DUOSEAL, 220V 50Hz 1Ph, without CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
Ships from Mississauga, ON
2-3 Days
CAD$7,160.20
2-3 Days
Availability: 2-3 Days
Minor Repair Kit, 1376For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
Ships from Mississauga, ON
2-3 Days
CAD$517.20
2-3 Days
Availability: 2-3 Days
Major Repair Kit, 1376For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
Ships from Mississauga, ON
2-3 Days
CAD$1,149.50
2-3 Days
Availability: 2-3 Days
Chemstar Minor Repair KitFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of..
Ships from Mississauga, ON
2-3 Days
CAD$603.10
2-3 Days
Availability: 2-3 Days
Chemstar Major Repair KitFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of..
Ships from Mississauga, ON
2-3 Days
CAD$1,369.40
2-3 Days
Availability: 2-3 Days
DUOSEAL, 230/460V 60HZ 3PHDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoS..
Ships from Mississauga, ON
2-3 Days
CAD$7,102.10
2-3 Days
Availability: 2-3 Days
CHEMSTAR, 115V 60Hz 1PhFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
Ships from Mississauga, ON
2-3 Days
CAD$7,850.80
2-3 Days
Availability: 2-3 Days
CHEMSTAR, 115V 60Hz 1Ph FomblinizedFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. Thes..
Ships from Mississauga, ON
2-3 Days
CAD$8,824.90
2-3 Days
Availability: 2-3 Days
CHEMSTAR, Mounted without motorFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These ye..
Ships from Mississauga, ON
2-3 Days
CAD$7,465.50
2-3 Days
Availability: 2-3 Days
CHEMSTAR, 100V 60HZ 1PHFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
Ships from Mississauga, ON
2-3 Days
CAD$7,959.90
2-3 Days
Availability: 2-3 Days
DUOSEAL Unmounted PumpDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$8,112.50
2-3 Days
Availability: 2-3 Days
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..
Ships from Mississauga, ON
2-3 Days
CAD$170.10
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$8,933.90
2-3 Days
Availability: 2-3 Days
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
Ships from Mississauga, ON
2-3 Days
CAD$8,723.10
2-3 Days
Availability: 2-3 Days
DUOSEAL for Refrigeration, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
Ships from Mississauga, ON
2-3 Days
CAD$9,391.90
2-3 Days
Availability: 2-3 Days
DUOSEAL, 220V 50Hz 1Ph without CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads..
Ships from Mississauga, ON
2-3 Days
CAD$9,290.10
2-3 Days
Availability: 2-3 Days
DUOSEAL, Refrigerant Pump, 230V 50 Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loa..
Ships from Mississauga, ON
2-3 Days
CAD$9,391.90
2-3 Days
Availability: 2-3 Days
Minor Repair Kit, 1397For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
Ships from Mississauga, ON
2-3 Days
CAD$946.80
2-3 Days
Availability: 2-3 Days
Major Repair Kit, 1397For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
Ships from Mississauga, ON
2-3 Days
CAD$1,326.50
2-3 Days
Availability: 2-3 Days
DUOSEAL, 230V, 60Hz 3PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
Ships from Mississauga, ON
2-3 Days
CAD$9,391.90
2-3 Days
Availability: 2-3 Days
DUOSEAL Unmounted PumpDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$2,733.30
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$3,249.40
2-3 Days
Availability: 2-3 Days
DUOSEAL PUMP MTD 115V, 60HZ 1PH FOMBLINDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads..
Ships from Mississauga, ON
2-3 Days
CAD$4,114.40
2-3 Days
Availability: 2-3 Days
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
Ships from Mississauga, ON
2-3 Days
CAD$3,104.00
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V, 60Hz 1Ph, CSADeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged Duo..
Ships from Mississauga, ON
2-3 Days
CAD$3,351.20
2-3 Days
Availability: 2-3 Days
DUOSEAL, 230V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$3,416.60
2-3 Days
Availability: 2-3 Days
DUOSEAL, 230V 50Hz 1Ph, with CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Ru..
Ships from Mississauga, ON
2-3 Days
CAD$3,438.40
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V 60Hz 1Ph, Exp. Proof MotorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor load..
Ships from Mississauga, ON
2-3 Days
CAD$4,267.10
2-3 Days
Availability: 2-3 Days
DUOSEAL Unmounted PumpDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$4,267.10
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$4,696.00
2-3 Days
Availability: 2-3 Days
DUOSEAL, Mounted without motorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged D..
Ships from Mississauga, ON
2-3 Days
CAD$4,579.70
2-3 Days
Availability: 2-3 Days
DUOSEAL, 115V, 60Hz 1Ph, CSADeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged Duo..
Ships from Mississauga, ON
2-3 Days
CAD$5,088.50
2-3 Days
Availability: 2-3 Days
DUOSEAL, 230V 60Hz 1PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$5,074.00
2-3 Days
Availability: 2-3 Days
DUOSEAL, 220V 50Hz 1Ph with Schuko Plug/CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vap..
Ships from Mississauga, ON
2-3 Days
CAD$5,044.90
2-3 Days
Availability: 2-3 Days
DUOSEAL, 230/460V 60Hz 3PhDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSe..
Ships from Mississauga, ON
2-3 Days
CAD$5,430.20
2-3 Days
Availability: 2-3 Days
CHEMSTAR Unmounted PumpFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
Ships from Mississauga, ON
2-3 Days
CAD$5,197.50
2-3 Days
Availability: 2-3 Days
CHEMSTAR PUMP MOUNTED, 115V,60HZ,1PHFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. The..
Ships from Mississauga, ON
2-3 Days
CAD$5,582.80
2-3 Days
Availability: 2-3 Days
CHEMSTAR Without MotorFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of ex..
Ships from Mississauga, ON
2-3 Days
CAD$5,444.70
2-3 Days
Availability: 2-3 Days
CHEMSTAR, 220V 50Hz 1Ph with Schuko PlugFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs...
Ships from Mississauga, ON
2-3 Days
CAD$5,982.60
2-3 Days
Availability: 2-3 Days
CHEMSTAR, 100V 50Hz 1PhFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of e..
Ships from Mississauga, ON
2-3 Days
CAD$5,982.60
2-3 Days
Availability: 2-3 Days
CHEMSTAR, MOUNTED PUMP 230V, 60HZ, 1PHFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. ..
Ships from Mississauga, ON
2-3 Days
CAD$5,939.00
2-3 Days
Availability: 2-3 Days
CHEMSTAR EXPL.PROOF PUMP 1402NFor over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These yea..
Ships from Mississauga, ON
2-3 Days
CAD$6,964.00
2-3 Days
Availability: 2-3 Days
DUOSEAL,PUMP 115/60 1PH EXP PRF MOTORDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.R..
Ships from Mississauga, ON
2-3 Days
CAD$6,178.90
2-3 Days
Availability: 2-3 Days
DUOSEAL Unmounted PumpDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal b..
Ships from Mississauga, ON
2-3 Days
CAD$3,605.60
2-3 Days
Availability: 2-3 Days
DUOSEAL,MOUNTED PUMP 115V/60HZ 1PHDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugg..
Ships from Mississauga, ON
2-3 Days
CAD$4,405.20
2-3 Days
Availability: 2-3 Days
DUOSEAL, PUMP W/O MOTORDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loads.Rugged DuoSeal ..
Ships from Mississauga, ON
2-3 Days
CAD$4,158.00
2-3 Days
Availability: 2-3 Days
DUOSEAL, MOUNTED PUMP 115V, 60Hz 1Ph, CSADeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high vapor loa..
Ships from Mississauga, ON
2-3 Days
CAD$4,659.60
2-3 Days
Availability: 2-3 Days
DUOSEAL,MOUNTED PUMP 230V 50Hz 1Ph, with CE markDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for high v..
Ships from Mississauga, ON
2-3 Days
CAD$4,645.10
2-3 Days
Availability: 2-3 Days
DUOSEAL, MOUNTED PUMP 115V 60Hz 1Ph, Exp. Proof MotorDeep vacuum for fast evacuation and dehydrationDurable pump, precision machinedGas ballast for hi..
Ships from Mississauga, ON
2-3 Days
CAD$5,750.00
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