Edwards Launches Special Variant to its nXDS Range of Scroll Pumps for More Aggressive Chemical Applications

  Edwards Launches Special Variant to its nXDS Range of Scroll Pumps for More
  Aggressive Chemical Applications

Business Wire

CRAWLEY, United Kingdom -- June 18, 2013

Edwards Group Limited (NASDAQ: EVAC), a leading manufacturer of sophisticated
vacuum products and abatement systems and a global provider of related
value-added services, has launched a special variant to its nXDS range of dry
scroll vacuum pumps which uses a Chemraz® exhaust valve and stainless steel
inlet and outlet fittings, for use in more aggressive applications.

nXDS-C (Photo: Business Wire)

nXDS-C (Photo: Business Wire)

The nXDS-C features the Chemraz® exhaust valve which is used for applications
involving pumping organic solvents or other materials that may attack the
standard pumps’ fluroelastomer exhaust valve, causing it to deteriorate
rapidly. In response to customer demand the nXDS-C variant has been introduced
which includes the special exhaust valve pre-fitted as standard. The nXDS will
still be readily available, and the previously available upgrade kit will
remain as an aftermarket option to give customers the widest choice to suit
their individual needs.

The nXDS-C dry scroll pump provides an alternative to oil sealed rotary vane
pumps and other dry technologies. It is lubricant free and hermetically sealed
so it provides a totally clean and dry vacuum to prevent cross contamination.
Unlike other scroll pumps, the bearings are isolated by the bellows, so that
any aggressive chemicals involved in the process will not attack them.

Paul Bolton, Product Manager, Edwards, commented, “Hermetic sealing via
Edwards’ ‘bearing shield’ means no moving seals or shaft seals to leak or need
purging, allowing the nXDS-C to be a truly “dry” pump with no lubricants of
any kind in the pumped gas path. Unlike many competing scroll pumps which use
a glued two piece tip-seal that is prone to attack, the nXDS-C pump features a
single piece user serviceable tip-seal that allows it to handle a large
variety of common laboratory solvent and dilute acid vapors. The pump can
handle up to 280 grammes per hour of water vapor. It is entirely field
serviceable with long time periods between service intervals.”

It is based on the technology of the well proven nXDS and XDS scroll vacuum
pumps, and is ideal for use in wet chemical laboratories, freeze drying,
rotary evaporation and distillation.


About Edwards

Further information about Edwards can be found at www.edwardsvacuum.com.

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Edwards Ltd
Rebecca Walder
+44 (0) 1293 603103
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