Your browser is not supported

You are using a browser we do not support any longer. To continue visiting our website, please choose one of the following supported browsers.

nES Single Stage Ex Series Rotary Vane Pumps

Protection in explosive environments

RV_Group

Protection in explosive environments

Specifically designed to be capable of handling gases from a potentially explosive atmosphere and to operate in environments where potentially explosive atmospheres can be present. Pumps have been certified under the ATEX directive 2014/34/EU.

Equipped with sensors to protect your pump

nES pumps are equipped with sensors to measure pump temperature, oil level and pressure in oil casing. They are also equipped with PTC motor thermistors for motor and overcurrent protection.

Internal mechanism designed for low temperatures

You are guaranteed a class-leading ultimate vacuum level without pressure fluctuations. The mechanism is designed to ensure minimal hotspots within the pump.

Ideal for a wide range of applications

If your application includes an explosive environment, the nES is the ideal pump. It is suitable for use in the chemical, pharmaceutical, degassing, automotive and gas vapour recovery industries. Edwards’ applications team can help you identify the ideal use of the nES pump for your application.

Equipped with ATEX compatible accessories

  • ATEX rated exhaust mist filter
  • FPM seals
  • Oil filter bypass
  • ATEX rated motor and coupling
  • Approved oil
  • Gas ballast facility
  Units nES40ex nES65ex nES100ex nES200ex nES300ex nES630ex
Maxmimum Dispplacement 50Hz m3h-1/cfm  44.0 / 25.9 59.0 / 34.8 98.0 / 57.4 180 / 106 280 / 165 700 / 412
Maxmimum Dispplacement 60Hz m3h-1/cfm 53.0 / 31.2 71.0 / 41.8 117 / 68.9 220 / 130 340 / 200 -
Pumping Speed (50 Hz) m3h-1/cfm 38.5 / 22.7 54.0 / 31.8 87.5 / 51.5 170 / 100 240 / 141 640 / 377
Pumping Speed (60 Hz) m3h-1/cfm 47.0 / 27.7 64.0 / 37.7 105 / 61.8 200 / 118 290 / 171 -
Ultimate vacuum (total pressure)
no gas ballast
mbar / torr 0.5 / 0.4 0.5 / 0.4 0.5 / 0.4 0.15 / 0.13 0.15 / 0.13 0.15 / 0.13
Ultimate vacuum (total pressure)
with gas ballast
mbar / torr 1.5 / 1.1 1.5 / 1.1 1.5 / 1.1 0.7 / 0.5 0.7 / 0.5 0.7 / 0.5
Inlet Connection ISO / ANSI DN40 /ANSI 1"1/2 DN40 /ANSI 1"1/2 DN40 /ANSI 1"1/2 DN50 /ANSI 2” DN50 /ANSI 2” DN100 ISO-K/ ANSI 4"
Outlet Connection ISO / ANSI DN40 /ANSI 1"1/2 DN40 /ANSI 1"1/2 DN40 /ANSI 1"1/2 DN50 /ANSI 2” DN50 /ANSI 2” DN100 ISO-K/ ANSI 4"
Max permitted outlet pressure bar (abs) 1.15 abs 1.15 abs 1.15 abs 1.15 abs 1.15 abs 1.15 abs
Max water vapour pumping rate (50Hz) kgh-1/lbh-1 0.76 / 0.80 1.0 / 1.1 1.60 / 1.69 3.4 / 3.6 1.3 / 1.4 17 / 18
Max water vapour pumping rate (60Hz) kgh-1/lbh-1 0.90 / 0.95 1.25 / 1.32 1.70 / 1.80 5.4 / 5.7 1.8 / 1.9 -
Dimenstions (L, W, H) mm 686 / 356/ 303 748 / 386/ 349 810 / 434 / 319 1084 / 535/ 435 1143 / 573 / 450 1568 / 989 / 740
Weight kg / lb 67 / 148 86 / 190 104 / 230 142 / 313 244 / 539 695 / 1534
Motor Protection rating   IP55 IP55 IP55 IP55 IP55 IP65
Motor Power (50Hz) kW / hp 1.5 / 2.0 2.2 / 3.0 3.0 / 5.0 5.5 / 8 7.5 / 10 18.5 / 26
Motor Power (60Hz) kW / hp 1.8 / 3.0 2.6 / 4.0 3.6 / 6.0 6.6 / 10 9 / 13 -
Noise level (50Hz) dB(A) 58 60 61 69 72 72
Noise level (60Hz) dB(A) 60 64 64 73 76 -
Oil Refill Capacity litre 1 2 2 5 - 9 8.5 - 11.5 20 - 23
Recommended oil Ultragrade Endurance Extend 110
nES EX Series Rotary Vane Pumps brochure

PDF

5.5 MB

Edwards employees standing in corridor smiling
SERVICE SOLUTIONS

Read more on our offerings in Service Solutions