Scientific Instrument Services, Inc.  Supplies and Services for Mass Spectrometers, Gas Chromatographs, and Liquid Chromatographs.

Edwards Vacuum Pumps: EO50/60 Diffusion Pump

The Model EO50/60 is a compact, fast warm-up air-cooled diffusion pump supplies complete with high integrity inlet Co-seal, and flange clamping ring. The jet assembly is removeable for easy cleaning. It meets the need for a low-cost, high vacuum pump for use in desk top or mobile scientific instruments, leak detectors, tube pumping systems and general laboratory applications.

In many applications the rapid warm-up capability will enable the EO50/60 to be used without an isolation valve. However, the pump is not intended for use on valveless systems where rapid cycling from atmospheric pressure through the hot pump is required.

Models are available with and without cooling fans. Models without fans are available as replacement diffusion pumps for H.P. MSD instruments.

Technical Data
Pumping speed (air) 60 e/s (27 e/s baffled)
(hydrogen) 70 e/s (50 e/s baffled)
Fluid Charge 18.5 ml
Recommended fluid Santovac 5, Silicone DC704EU
Minimum backing pump displacement 0.59 cfm
Recommended backing pump RV-3
Inlet connection NW50 flange
Backing connection NW10 flange
Heater power 200 W or 250 W
Warm-up time to operating temperature 4 min
Weight 4.4 lb
Minimum cooling air flow 2.7 cfm

Fluid Critical backing
pressure (torr)
Ultimate
pressure (torr)
Santovac 5 0.45 3.8 x 10-8
Silicone DC702 0.9 3.8 x 10-6
Silicone DC704EU 0.6 3.8 x 10-7
Silicone DC705 0.45 3.8 x 10-7
Apiezon C 0.53 3.8 x 10-7

Edwards Model EO50/60 Diffusion Pump, UOM=EA
Part No. Description est
wt.
Quantity
In Stock
Price Quantity
to order
B30211090 90 volts (for H.P. MSD) no fan 15 0(#)$1965.00
1
B30211180 180 volts (for H.P. MSD) no fan 15 1$1650.00
1
B30207110 110-125 volts, with fan 115 volts 15 0(#)$1951.00
1
B30207240 230-250 volts, with fan 230 volts 15 0(#)$1951.00
1
(#) Standard lead-time for out-of-stock items is approximately two weeks.
shopping cart Ordering information. International (non-US) prices available through your local dealer.
SIS Catalog Cross Reference
Page #Part Numbers
B10 - Agilent 5971/5972 GCD Accessories by S.I.S.â„¢ B30211090, B30211180
B11 - B30211090, B30211180
B3 - Agilent Accessories by S.I.S.â„¢ B30211090, B30211180
F23 - BOC Edwards Vacuum Pumps B30207110, B30207240, B30211090, B30211180
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