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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.

Pump Model	1374	1376	1376N	1397	1399	1399N
Pumping Speeds	50 (Hz) 23.0 CFM 651 L/min 10.8 L/s 39.1 m3/hr 60 (Hz) 23.0 CFM 651 L/min 10.8 L/s 39.1 m3/hr	50 (Hz) 10.6 CFM 300 L/min 4.98 L/s 18.0 m3/hr 60 (Hz) 10.6 CFM 300 L/min 4.98 L/s 18.0 m3/hr	50 (Hz) 10.6 CFM 300 L/min 4.98 L/s 18.0 m3/hr 60 (Hz) 10.6 CFM 300 L/min 4.98 L/s 18.0 m3/hr	50 (Hz) 17.7 CFM 501 L/min 8.32 L/s 30.1 m3/hr 60 (Hz) 17.7 CFM 501 L/min 8.32 L/s 30.1 m3/hr	50 (Hz) 1.20 CFM 34.0 L/min 0.56 L/s 2.04 m3/hr 60 (Hz) 1.20 CFM 34.0 L/min 0.56 L/s 2.04 m3/hr	50 (Hz) 1.20 CFM 34.0 L/min 0.56 L/s 2.04 m3/hr 60 (Hz) 1.20 CFM 34.0 L/min 0.56 L/s 2.04 m3/hr
Ultimate Pressure	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr Total With Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr Total Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.90 x 10^-2 hPA 1.90 x 10^-2 mbar 1.90 Pa 1.50 x 10^-2 Torr	Partial Without Gas Ballast 1.90 x 10^-2 hPA 1.90 x 10^-2 mbar 1.90 Pa 1.50 x 10^-2 Torr
Cooling Method(s)	Method Convection	Method Convection	Method Convection	Method Convection	Method Convection	Method Convection
Motor Power HP (kW)	1.50 ( 1.12 )	1.01 ( 0.75 )	1.01 ( 0.75 )	1.01 ( 0.75 )	0.34 ( 0.25 )	0.34 ( 0.25 )
Inlet Flange	1-5/8" Hose Barb	13/16" Hose Barb	KF25	1-5/8" Hose Barb	7/16" Hose Barb	7/16" Hose Barb
Exhaust Flange	1.75-20	1-20	1-20	1 3/4-20 1.75_20	3/4-20	3/4-20
Oil Type(s)	Hydrocarbon Oil Part: KJLSS19Q1	Hydrocarbon Oil Part: KJLSS19G1	Hydrocarbon Oil Part: KJLSS19G1	Hydrocarbon Oil Part: KJLSS19Q1	Hydrocarbon Oil Part: KJLSS19Q1	Hydrocarbon Oil Part: KJLSS19Q1
Oil Capacity Quarts (Liters) *Unless otherwise noted	1.26 ( 1.20 )	2.52 ( 2.40 )	2.52 ( 2.40 )	1.26 ( 1.20 )	0.49 ( 0.47 )	0.49 ( 0.47 )
Compression Stages	2	2	2	2	1	1
Series	Standard	Standard	Standard	Standard	Standard	Standard
Weight Lbs (kg)	218 ( 99.1 )	215 ( 97.7 )	215 ( 97.7 )	213 ( 96.8 )	62.0 ( 28.2 )	62.0 ( 28.2 )
Dimensions in. (mm.)	23.3 x 13.8 x 19.1 (591 x 350 x 486 )	19.3 x 13.0 x 14.8 (489 x 330 x 376 )	19.3 x 13.0 x 14.8 (489 x 330 x 376 )	23.6 x 14.8 x 19.1 (600 x 377 x 486 )	17.0 x 10.5 x 11.9 (432 x 267 x 301 )	17.0 x 10.5 x 11.9 (432 x 267 x 301 )
Lubrication Type	Wet	Wet	Wet	Wet	Wet	Wet
Technology Type	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven

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Pump Model	1400	1400N	1402	1402N	1405
Pumping Speeds	50 (Hz) 0.90 CFM 25.5 L/min 0.42 L/s 1.53 m3/hr 60 (Hz) 0.90 CFM 25.5 L/min 0.42 L/s 1.53 m3/hr	50 (Hz) 0.29 CFM 8.21 L/min 0.14 L/s 0.49 m3/hr 60 (Hz) 0.29 CFM 8.21 L/min 0.14 L/s 0.49 m3/hr	50 (Hz) 5.60 CFM 158 L/min 2.63 L/s 9.51 m3/hr 60 (Hz) 5.60 CFM 158 L/min 2.63 L/s 9.51 m3/hr	50 (Hz) 5.60 CFM 158 L/min 2.63 L/s 9.51 m3/hr 60 (Hz) 5.60 CFM 158 L/min 2.63 L/s 9.51 m3/hr	50 (Hz) 3.20 CFM 90.6 L/min 1.50 L/s 5.44 m3/hr 60 (Hz) 3.20 CFM 90.6 L/min 1.50 L/s 5.44 m3/hr
Ultimate Pressure	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr Total With Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr Total Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr Total With Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr Total Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr	Partial Without Gas Ballast 1.30 x 10^-4 hPA 1.30 x 10^-4 mbar 1.30 x 10^-2 Pa 1.00 x 10^-4 Torr
Cooling Method(s)	Method Convection	Method Convection	Method Convection	Method Convection	Method Convection
Motor Power HP (kW)	0.34 ( 0.25 )	0.34 ( 0.25 )	0.50 ( 0.37 )	0.50 ( 0.37 )	0.50 ( 0.37 )
Inlet Flange	7/16" Hose Barb	KF16	13/16" Hose Barb KF25	KF25	7/16" Hose Barb
Exhaust Flange	3/4-20	3/4-20	1-20 1_20	1-20	1-20
Oil Type(s)	Hydrocarbon Oil Part: KJLSS19Q1		Hydrocarbon Oil Part: KJLSS19Q1		Hydrocarbon Oil Part: KJLSS19Q1
Oil Capacity Quarts (Liters) *Unless otherwise noted	0.62 ( 0.59 )	0.62 ( 0.59 )	2.21 ( 2.10 )	2.21 ( 2.10 )	2.21 ( 2.10 )
Compression Stages	2	2	2	2	2
Series	Standard	Standard	Standard	Standard	Standard
Weight Lbs (kg)	70.0 ( 31.8 )	70.0 ( 31.8 )	132 ( 60.0 )	132 ( 60.0 )	132 ( 60.0 )
Dimensions in. (mm.)	17.0 x 10.5 x 12.9 (432 x 267 x 328 )	17.0 x 10.5 x 12.9 (432 x 267 x 328 )	19.3 x 11.0 x 14.8 (489 x 280 x 376 )	19.3 x 11.0 x 14.8 (489 x 280 x 376 )	19.3 x 11.0 x 14.8 (489 x 280 x 376 )
Lubrication Type	Wet	Wet	Wet	Wet	Wet
Technology Type	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven	Rotary Vane - Belt Driven

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Ordering Table

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Pump Model	Inlet Flange	Oil Prep	Manual	Reman KJLC Remanufactured	Description	Part Number	Price	In Stock	Add To Cart	Accessories
Pump Model	Inlet Flange	Oil Prep	Manual	Reman KJLC Remanufactured	Description	Part Number	Price	In Stock	Add To Cart	Accessories
1374	1-5/8" Hose Barb	—		—	PUMP ONLY,23CFM,2STG,650L/M	SW1374	P.O.R.
1374	1-5/8" Hose Barb	—		—	PUMP, 23CFM, 115V/230, 60HZ, 1PH	SW1374B-01	P.O.R.
1374	1-5/8" Hose Barb	—		—	PUMP,3PH,230/460,60HZ,W/ GUARD	SW1374M-01	P.O.R.
1376	13/16" Hose Barb	—		—	PUMP,115/230V,60HZ,1PH,2STG, W/GUARD,10.6CFM	SW1376B-01	P.O.R.
1376	13/16" Hose Barb	—		—	PUMP, 10.6CFM, 3PH, 2STG, 230/ 460V,60HZ, W/GUARD	SW1376M-01	P.O.R.
1376N	KF25	—		—	PUMP,RTRY VANE,CORROSIVE,2 STG 10.6CFM,115/230V,60HZ,1PH	SW1376N-01	P.O.R.
1376N	KF25	—		—	PUMP, ROTARY VANE, CHEMSTAR, 230V AC, 60HZ, 1PH, KF25	SW1376N-60	P.O.R.
1397	1-5/8" Hose Barb	—		—	PUMP ONLY, 17.7CFM, 500L/M	SW1397	P.O.R.
1397	1-5/8" Hose Barb	—		—	PUMP,115/230V,60HZ,1PH,17.7CFM W/GUARD	SW1397B-01	P.O.R.
1397	1-5/8" Hose Barb	Hydrocarbon oil		KJLC Remanufactured	PUMP,REMANUFACTURED, 1397B-01, 17.7 CFM,W/BASE AND MOTOR, 115/230V,60HZ	SW1397B-01R	P.O.R.
1397	1-5/8" Hose Barb	—		—	PUMP, 3PH, 230/460V, 60HZ, W/ GUARD, 17.7CFM	SW1397M-01	P.O.R.
1399	7/16" Hose Barb	—		—	PUMP, ROTARY VANE, DUOSEAL, UNMOUNTED PUMP, 7/16" HOSE BARB	SW1399	P.O.R.
1399	7/16" Hose Barb	—		—	PUMP, 115V, 1.2CFM, 60HZ, W/ GUARD	SW1399B-01	P.O.R.
1399	7/16" Hose Barb	—		—	PUMP, ROTARY VANE, DUOSEAL, 220V AC, 50HZ, 1PH, WITH SCHUKO PLUG, 7/16" HOSE BARB	SW1399C-02	P.O.R.
1399N	7/16" Hose Barb	—		—	PUMP, ROTARY VANE, DUOSEAL, 115V AC, 60HZ, 1PH, WITH PUMP PLATE, 7/16" HOSE BARB	SW1399N-01	P.O.R.
1400	7/16" Hose Barb	—		—	PUMP ONLY, .9CFM, 25L/M SARGENT-WELCH VACUUM PUMP	SW1400	P.O.R.
1400	7/16" Hose Barb	—		—	PUMP, 1PH, 60HZ, 1/3HP-115V, ODP, .9CFM	SW1400B-01	P.O.R.
1400N	KF16	—		—	PUMP,RTRY VANE,CORROSIVE,2 STG 0.9CFM,115V,60HZ,1PH	SW1400N-01	P.O.R.
1400N	KF16	—		—	PUMP,ROTARY VANE,CHEM,2 STG,0.9CFM,220V,1PH,50HZ	SW1400N-50	P.O.R.
1402	13/16" Hose Barb	—		—	PUMP ONLY, 5.6CFM, 160L/M,2STG SARGENT-WELCH VACUUM PUMP	SW1402	P.O.R.
1402	13/16" Hose Barb	—		—	PUMP, 5.6CFM, 115V, 60HZ, ODP MOTOR	SW1402B-01	P.O.R.
1402	13/16" Hose Barb	—		—	PUMP, ROTARY VANE, DUOSEAL, 230V AC, 60HZ, 1PH, 13/16" HOSE BARB	SW1402C-01	P.O.R.
1402	13/16" Hose Barb	—		—	PUMP,DUOSEAL,5.6CFM,220V/50HZ, CE MARKED,W/SCHUKO EURO PLUG	SW1402C-02	P.O.R.
1402	13/16" Hose Barb	—		—	PUMP,DUOSEAL,5.6CFM,COMPLETE, 230/460V,3PH,60HZ	SW1402M-01	P.O.R.
1402N	KF25	—		—	PUMP, CHEMSTAR, 1402N, PUMP ONLY	SW1402N	P.O.R.
1402N	KF25	—		—	PUMP,CHEMSTAR VACUUM,CORROSION RESISTANT,5.6CFM,115/230V,60HZ	SW1402N-01	P.O.R.
1402	KF25	Fomblin		KJLC Remanufactured	PUMP, REMANUFACTURED, CHEMSTAR, 1402N, CORROSION RESISTANT, 5.6CFM,115/230V,60HZ SN#	SW1402N-01R	P.O.R.
1402N	KF25	—		—	PUMP, ROTARY VANE, CHEMSTAR, 220V AC, 50HZ, 1PH, WITH SCHUKO PLUG, KF25	SW1402N-50	P.O.R.
1402N	KF25	—		—	PUMP, CHEMSTAR, MOUNTED PUMP, 230V, 60HZ, 1PH	SW1402N-60	P.O.R.
1405	7/16" Hose Barb	—		—	PUMP, ROTARY VANE, DUOSEAL, UNMOUNTED PUMP, 7/16" HOSE BARB	SW1405	P.O.R.
1405	7/16" Hose Barb	—		—	PUMP, 115V, 60HZ, 2.1CFM, W/ GUARD	SW1405B-01	P.O.R.
1405	7/16" Hose Barb	—		—	DUOSEAL PUMP, 230V, 50HZ, 1PH, 2.1CFM, W/ GUARD & BASE,CE MARKED	SW1405C-02	P.O.R.

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Accessories Table

Description	For Pump Model(s)	Accessory Type	Part Number	Price	In Stock	Add To Cart
Description	For Pump Model(s)	Accessory Type	Part Number	Price	In Stock	Add To Cart
Clamping Kit, For QF16 Flange, Including Aluminum Clamp and FKM Centering Ring	1400N	KF Hardware Kit	QF16-HDKIT	P.O.R.
Clamping Kit, For QF25 Flange, Including Aluminum Clamp and FKM Centering Ring	1376N, 1402N	KF Hardware Kit	QF25-HDKIT	P.O.R.
KJLC 300 Convection Enhanced Pirani, KF16	All Standard DUOSEAL Pumps	Gauge	KJL300806	$795.00
KJLSS19 Hydrocarbon Oil (1 Gallon)	All Standard DUOSEAL Pumps	Hydrocarbon Oil	KJLSS19G1	$57.00
KJLSS19 Hydrocarbon Oil (1 quart)	All Standard DUOSEAL Pumps	Hydrocarbon Oil	KJLSS19Q1	$22.00
KJLSS19 Hydrocarbon Oil (5 Gallon Pail)	All Standard DUOSEAL Pumps	Hydrocarbon Oil	KJLSS19G5	$198.00
KJLSS19 Hydrocarbon Oil (55 Gallon Drum)	All Standard DUOSEAL Pumps	Hydrocarbon Oil	KJLSS19G55	$1,731.00
Power Supply, KJLC 275i or 300, US Plug End	All Standard DUOSEAL Pumps	Gauge Power Cable	KJLPS401A	$96.00

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Welch® Standard and Chemstar

Welch: Belt-Drive Standard Vane Pumps

Welch: Belt-Drive Chemstar Pump

Specifications Table

Ordering Table

Accessories Table

Welch^® Standard and Chemstar