Representative Image

Edwards Diffstak Series (Water Cooled) Diffusion Pumps

The Edwards unvalved Diffstak consists of a water-cooled diffusion pump, an inlet baffle and roughing line connections. Containing no high-vacuum valve, it is well suited for applications requiring the highest ultimate vacuum. The C-model pumps come equipped with an ISO inlet flange, the F-models with a CF (ConFlat-compatible) flange. The C-model pumps are available in four sizes: 150 L/sec., 300 L/sec., 760 L/sec., and 2130 L/sec. The F-model is available in 300 L/sec. and 760 L/sec. sizes.

Dimensional Drawings

Charts

Edwards Diffstak Series (Water Cooled) Diffusion Pumpschart

Specifications Table

Pump Model	63/150C	100/300C	160/700C	250/2000C
Pumping Speeds	N2: 150 L/s H2: 225 L/s	N2: 300 L/s H2: 535 L/s	N2: 760 L/s H2: 1410 L/s	N2: 2130 L/s H2: 3200 L/s
Ultimate Pressure	Ultimate 6.50 x 10^-8 mbar 4.88 x 10^-8 Torr	Ultimate 6.50 x 10^-8 mbar 4.88 x 10^-8 Torr	Ultimate 6.50 x 10^-8 mbar 4.88 x 10^-8 Torr	Ultimate 6.50 x 10^-8 mbar 4.88 x 10^-8 Torr
Max Foreline Pressure	3.00 x 10⁰ mbar 2.25 x 10⁰ Torr	3.00 x 10⁰ mbar 2.25 x 10⁰ Torr	3.00 x 10⁰ mbar 2.25 x 10⁰ Torr	3.00 x 10⁰ mbar 2.25 x 10⁰ Torr
Cooling Method(s)	Method Water Water Flow Rate 11.1 gal/hr 42.0 L/hr	Method Water Water Flow Rate 15.9 gal/hr 60.0 L/hr	Method Water Water Flow Rate 30.4 gal/hr 115 L/hr	Method Water Water Flow Rate 47.6 gal/hr 180 L/hr
Foreline Flange	KF10	KF25	KF25	KF40
Inlet Flange	ISO63-K	ISO100-K	ISO160-K	ISO250-K
Oil Type(s)	Santovac 5	Santovac 5	Santovac 5	Santovac 5
Weight Lbs (kg)	11.0 ( 5.00 )	19.9 ( 9.00 )	39.7 ( 18.0 )	101 ( 46.0 )
Lubrication Type	Wet	Wet	Wet	Wet
Technology Type	Diffusion	Diffusion	Diffusion	Diffusion

X CLOSE

Ordering Table

X CLOSE

Pump Model	Inlet Flange	Foreline Flange	Voltage & Phases	Manual	Description	Part Number	Price	In Stock	Add To Cart	Accessories
Pump Model	Inlet Flange	Foreline Flange	Voltage & Phases	Manual	Description	Part Number	Price	In Stock	Add To Cart	Accessories
63/150C	ISO63-K	KF10	115 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 63/150C Diffusion Pump with ISO63-K inlet flange, 150 L/s, Water cooling, 115 VAC 50/60 Hz, 1-Ø	B34433976	$8,200.00
63/150C	ISO63-K	KF10	240 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 63/150C Diffusion Pump with ISO63-K inlet flange, 150 L/s, Water cooling, 240 VAC 50/60 Hz, 1-Ø	B34433978	$8,200.00
100/300C	ISO100-K	KF25	115 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 100/300C Diffusion Pump with ISO100-K inlet flange, 300 L/s, Water cooling, 115 VAC 50/60 Hz, 1-Ø	B34633976	$11,054.00
100/300C	ISO100-K	KF25	240 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 100/300C Diffusion Pump with ISO100-K inlet flange, 300 L/s, Water cooling, 240 VAC 50/60 Hz, 1-Ø	B34633978	$11,054.00
160/700C	ISO160-K	KF25	115 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 160/700C Diffusion Pump with ISO160-K inlet flange, 760 L/s, Water cooling, 115 VAC 50/60 Hz, 1-Ø	B34833976	$17,500.00
160/700C	ISO160-K	KF25	240 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 160/700C Diffusion Pump with ISO160-K inlet flange, 760 L/s, Water cooling, 240 VAC 50/60 Hz, 1-Ø	B34833978	$17,500.00
250/2000C	ISO250-K	KF40	115 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 250/2000C Diffusion Pump with ISO250-K inlet flange, 2130 L/s, Water cooling, 115 VAC 50/60 Hz, 1-Ø	B35033976	$34,336.00
250/2000C	ISO250-K	KF40	240 VAC 50/60 Hz, 1-Ø		Edwards Vacuum 250/2000C Diffusion Pump with ISO250-K inlet flange, 2130 L/s, Water cooling, 240 VAC 50/60 Hz, 1-Ø	B35033978	P.O.R.

CloseX

X CLOSE

Your Ultimate Vacuum Pump Selection Guide is Here!

Find your perfect pump with ease! Our NEW comprehensive Vacuum Pump Selection Guide allows you to cross-reference over 450 vacuum pumps, search various pump types based on multiple criteria, and offers both new and remanufactured options. Still can't find the vacuum pump you're looking, click here to contact us.