Edwards nES Series User Manual

3.4 Materials of construcon
Table 3 Components exposed to pumped gases
Component Material
Oil casing Aluminium
Rotor Carbon steel
Stator and endplates Grey cast iron
Lip seals Fluoroelastomer or PTFE
(polytetrauoroethylene)
Cooling coil (if applicable) Aluminium
Vanes Epoxy resin and glass bre
Bushing (if applicable) Bronze
Needle bearings (if applicable) Steel
Exhaust lters Polyester
O-rings Fluoroelastomer
Oil recovery oat valve Polyamide
Gas ballast membrane Fluoroelastomer
07/2020 - Page 21
A35104880_B - Technical data

Edwards nES Series Specifications

General

Brand	Edwards
Model	nES Series
Category	Water Pump
Language	English