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Welch® Standard and Chemstar Welch® Standard and Chemstar 1 1397B 1399B 1399N 1400B 1400N 1402B 1505B

Welch® Standard and Chemstar

Welch: Belt-Drive Standard Vane Pumps

The low pump speed and belt drive combine to reduce operating wear and temperature, thereby reducing maintenance and oil vapor backstreaming. Use these pumps for all general purpose roughing and backing applications that demand longevity.

The low pump speed and "decoupling" of the belt drive makes this 1399 pump run cooler than equivalent direct-drive pumps. The reduced wear increases the operating life and the reduced temperature decreases backstreaming. Used for vacuum distilations, glove box transfers, residual solvent removal, and resin degassing.

Welch: Belt-Drive Chemstar Pump

These N-01 pumps are versions of 1376, 1399, 1400, and 1402 pumps, modified to make all vital parts corrosion resistant. The oil case is PTFE coated; fluorocarbon seals and gaskets are used throughout; and many internal components are made from stainless steel. The large, low volume and slow speed enable this pump to accept high contamination levels even in dusty environments. We recommend these pumps for many dirty applications with corrosive gases.

KJLC offers pump repair kits for all pumps (prices available upon request), and pump repair service.


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Specifications Table

Ordering Table

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Pump Model Inlet Flange Oil Prep Manual Remanufactured Tooltip KJLC Remanufactured Description Part Number Price In Stock Add To Cart Accessories
Pump Model Inlet Flange Oil Prep Manual Remanufactured Tooltip KJLC Remanufactured Description Part Number Price In Stock Add To Cart Accessories
1374 1-5/8" Hose Barb Download PDF Welch 1374 Rotary Vane Pump, Hydrocarbon Oil, 1-5/8" Hose Barb inlet flange, 39.08 m^3/hr at 50Hz / 23 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1374View SW1374 Specific Information $6,455.00 Contact KJLC for Availability
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1374 1-5/8" Hose Barb Download PDF Welch 1374 Rotary Vane Pump, Hydrocarbon Oil, 1-5/8" Hose Barb inlet flange, 39.08 m^3/hr at 50Hz / 23 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1374B-01View SW1374B-01 Specific Information $7,355.00 Contact KJLC for Availability
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1374 1-5/8" Hose Barb Download PDF Welch 1374 Rotary Vane Pump, Hydrocarbon Oil, 1-5/8" Hose Barb inlet flange, 39.08 m^3/hr at 50Hz / 23 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1374M-01View SW1374M-01 Specific Information $7,485.00 Contact KJLC for Availability
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1376 13/16" Hose Barb Download PDF Welch 1376 Rotary Vane Pump, Hydrocarbon Oil, 13/16" Hose Barb inlet flange, 18.01 m^3/hr at 50Hz / 10.61 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1376B-01View SW1376B-01 Specific Information $5,030.00 Contact KJLC for Availability
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1376 13/16" Hose Barb Download PDF Welch 1376 Rotary Vane Pump, Hydrocarbon Oil, 13/16" Hose Barb inlet flange, 18.01 m^3/hr at 50Hz / 10.61 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1376M-01View SW1376M-01 Specific Information $4,885.00 Contact KJLC for Availability
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1376N KF25 Download PDF Welch 1376N Rotary Vane Pump, Hydrocarbon Oil, KF25 inlet flange, 18.01 m^3/hr at 50Hz / 10.61 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1376N-01View SW1376N-01 Specific Information $5,400.00 Contact KJLC for Availability
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1376N KF25 Download PDF Welch 1376N Rotary Vane Pump, Hydrocarbon Oil, KF25 inlet flange, 18.01 m^3/hr at 50Hz / 10.61 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1376N-60View SW1376N-60 Specific Information $5,475.00 Contact KJLC for Availability
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1397 1-5/8" Hose Barb Download PDF Welch 1397 Rotary Vane Pump, Hydrocarbon Oil, 1-5/8" Hose Barb inlet flange, 30.08 m^3/hr at 50Hz / 17.71 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1397View SW1397 Specific Information $5,580.00 Contact KJLC for Availability
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1397 1-5/8" Hose Barb Download PDF Welch 1397 Rotary Vane Pump, Hydrocarbon Oil, 1-5/8" Hose Barb inlet flange, 30.08 m^3/hr at 50Hz / 17.71 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1397B-01View SW1397B-01 Specific Information $6,145.00 Contact KJLC for Availability
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1397 1-5/8" Hose Barb Download PDF Welch 1397 Rotary Vane Pump, Hydrocarbon Oil, 1-5/8" Hose Barb inlet flange, 30.08 m^3/hr at 50Hz / 17.71 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1397M-01View SW1397M-01 Specific Information $7,520.00 Contact KJLC for Availability
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1399 7/16" Hose Barb Download PDF Welch 1399 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 2.04 m^3/hr at 50Hz / 1.21 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1399View SW1399 Specific Information $1,585.00 Contact KJLC for Availability
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1399 7/16" Hose Barb Download PDF Welch 1399 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 2.04 m^3/hr at 50Hz / 1.21 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1399B-01View SW1399B-01 Specific Information $1,945.00 Contact KJLC for Availability
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1399 7/16" Hose Barb Download PDF Welch 1399 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 2.04 m^3/hr at 50Hz / 1.21 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1399C-02View SW1399C-02 Specific Information $2,045.00 Contact KJLC for Availability
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1399N 7/16" Hose Barb Download PDF Welch 1399N Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 2.04 m^3/hr at 50Hz / 1.21 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1399N-01View SW1399N-01 Specific Information $2,625.00 Contact KJLC for Availability
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1400 7/16" Hose Barb Download PDF Welch 1400 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 1.53 m^3/hr at 50Hz / 0.9 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1400View SW1400 Specific Information $1,880.00 Contact KJLC for Availability
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1400 7/16" Hose Barb Download PDF Welch 1400 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 1.53 m^3/hr at 50Hz / 0.9 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1400B-01View SW1400B-01 Specific Information $2,235.00 Contact KJLC for Availability
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1400N KF16 Download PDF Welch 1400N Rotary Vane Pump, Hydrocarbon Oil, KF16 inlet flange, 0.5 m^3/hr at 50Hz / 0.29 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1400N-01View SW1400N-01 Specific Information $2,670.00 Contact KJLC for Availability
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1400N KF16 Download PDF Welch 1400N Rotary Vane Pump, Hydrocarbon Oil, KF16 inlet flange, 0.5 m^3/hr at 50Hz / 0.29 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1400N-50View SW1400N-50 Specific Information $2,775.00 Contact KJLC for Availability
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1402 13/16" Hose Barb Download PDF Welch 1402 Rotary Vane Pump, Hydrocarbon Oil, 13/16" Hose Barb inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402View SW1402 Specific Information $2,935.00 Contact KJLC for Availability
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1402 13/16" Hose Barb Download PDF Welch 1402 Rotary Vane Pump, Hydrocarbon Oil, 13/16" Hose Barb inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402B-01View SW1402B-01 Specific Information $3,840.00 Contact KJLC for Availability
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1402 13/16" Hose Barb Download PDF Welch 1402 Rotary Vane Pump, Hydrocarbon Oil, 13/16" Hose Barb inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402C-01View SW1402C-01 Specific Information $3,490.00 Contact KJLC for Availability
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1402 13/16" Hose Barb Download PDF Welch 1402 Rotary Vane Pump, Hydrocarbon Oil, 13/16" Hose Barb inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402C-02View SW1402C-02 Specific Information $3,470.00 Contact KJLC for Availability
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1402 13/16" Hose Barb Download PDF Welch 1402 Rotary Vane Pump, Hydrocarbon Oil, 13/16" Hose Barb inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402M-01View SW1402M-01 Specific Information $3,735.00 Contact KJLC for Availability
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1402N KF25 Download PDF Welch 1402N Rotary Vane Pump, Hydrocarbon Oil, KF25 inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402NView SW1402N Specific Information $4,160.00 Contact KJLC for Availability
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1402N KF25 Download PDF Welch 1402N Rotary Vane Pump, Hydrocarbon Oil, KF25 inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402N-01View SW1402N-01 Specific Information $4,565.00 In Stock
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1402 KF25 Fomblin Download PDF Tooltip KJLC Remanufactured Welch 1402 Rotary Vane Pump, PFPE Oil, KF25 inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402N-01RView SW1402N-01R Specific Information $3,350.00 In Stock
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1402N KF25 Download PDF Welch 1402N Rotary Vane Pump, Hydrocarbon Oil, KF25 inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402N-50View SW1402N-50 Specific Information $4,800.00 Contact KJLC for Availability
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1402N KF25 Download PDF Welch 1402N Rotary Vane Pump, Hydrocarbon Oil, KF25 inlet flange, 9.52 m^3/hr at 50Hz / 5.6 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1402N-60View SW1402N-60 Specific Information $4,085.00 Contact KJLC for Availability
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1405 7/16" Hose Barb Download PDF Welch 1405 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 5.44 m^3/hr at 50Hz / 3.21 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1405View SW1405 Specific Information $2,480.00 Contact KJLC for Availability
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1405 7/16" Hose Barb Download PDF Welch 1405 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 5.44 m^3/hr at 50Hz / 3.21 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1405B-01View SW1405B-01 Specific Information $3,030.00 Contact KJLC for Availability
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1405 7/16" Hose Barb Download PDF Welch 1405 Rotary Vane Pump, Hydrocarbon Oil, 7/16" Hose Barb inlet flange, 5.44 m^3/hr at 50Hz / 3.21 CFM at 60Hz, Convection cooling, , Mains Cable Not Included SW1405C-02View SW1405C-02 Specific Information $3,195.00 Contact KJLC for Availability
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