Used BOC Edwards Dry Scroll Pumps

Model	cfm	hp	kW	Rebuilt
ESDP12	9	0.5	0.4	$3,800
ESDP30	18	0.8	0.6	$4,750
GVSP30	18	0.8	0.6	$5,200
XDS-10	8	0.4	0.3	$2,100
XDS-35i	28	-	-	$9,500

EDSP GVSP

The BOC Edwards scroll dry pump, ESDP comes in two sizes named 12 and 30. The GVSP is the newer version. Either version is easy to install with no oil changes, no filter or foreline trap replacement and no oil waste disposal and there is little routine maintenance with a year between services.

XDS

Bearings are isolated from the vacuum environment by a the XDS bearing shield. Uniquely, there are no bearings, bearings purges, grease or oil under vacuum. Controllable gas ballast is standard and makes the XDS suitable for pumping condensed vapors.

XDS vibration and noise levels make it ideal for laboratory use. Typically, annual maintenance can be completed in about 10 minutes without special tools.

Specifications

	XDS5	XDS10
Displacement (cfm)	4.0	7.9
Peak pumping speed (cfm)	3.5	6.5
Ultimate vacuum (total pressure)	1 x 10^-2 torr	(7 x 10^-2 mbar)
Inlet connection	NW25
Outlet connection	NW25
Maximum allowed inlet pressure	1.0 bar gauge
Maximum allowed gas ballast inlet pressure	1.0 bar gauge
Maximum water vapor inlet pressure (mbar)	50	35
Maximum water vapor pumping rate
Gas ballast low flow	70 gh^-1
Gas ballast high flow	>200 gh^-1
Motor power (kW)	0.3
Enclosure rating	IP44
1-phase 60 Hz	115-120 V or 230-240 V
3-phase 60 Hz	200-230 V or 460 V
Operating temperature range	5 - 40^°C
Weight (lb)	51	54
Noise (dB A)	55
Vibration	<1.5 mms^-1 (rms)
Leak tightness (static)	<10^-6 mbar Is^-1

For EDSP and EVSP scroll specifications check out our Iwata page. One year warranty on all Edwards scroll pumps. The warranty does not cover tip seal maintenance. For example, per OEM specs, scroll pump tip seals must be replaced every 8,000 hours, or slightly less than 11 months, to maintain good base pressure.

Digital Manuals

XDS dry pump instruction manual.

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