EDP Chemical Dry Vacuum Pumps

Fast pumpdown and high capacity pumping for industrial processes

Reverse claw technology for the highest performance standards

Designed for safety and reliability

Specifically designed for your harsh chemical operations, the EDP is dynamically explosion-tested and certified by independent authorities. Further checks include leak checks up to 10-3 mbar l/s and type pressure tested from 22 - 75 barg – this is a pump you can rely on in even the harshest environments.

Ideal pump for chemical application industries

The EDP vacuum pump is temperature controlled for optimised operating conditions - hot for corrosive applications and cool for other gases. Edwards’ patented design for a short gas path eliminates particulate build-up and corrosion within the pump, giving you reliable performance, year after year.

Designed for long life performance and stability

Designed for a minimum of 25 years of operation with one year of unattended operation and three years between stripdowns, the EDP significantly reduces your overall cost of ownership.

Unique award-winning construction

When you specify an EDP pump, you benefit from Edwards’ oil-free, non-contacting, award-winning, reverse claw mechanism. The stator and rotors are constructed from non-brittle ductile iron materials to ensure long-life.

  • Hermetically sealed magnetic drive option available on EDPs for enhanced safety
  • Low power at operating vacuum
  • Adjustable cooling water flow
  • Minimum seal purge flow
  • No cooling gas injection required
  • Cheap to replace rotating parts

  Units EDP80 EDP160 EDP250 EDP400
    50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz
Maximum pumping speed m³h4 83 102 163 202 260 320 377 427
ft³min4 49 60 96 119 153 188 222 251
Capacity at 10 mbar (7.5 Torr) m³h4 75 102 153 198 255 315 377 422
ft³min4 44 60 90 117 150 185 222 248
Ultimate vacuum mbar 0.5 0.3 0.5 0.3 0.5 0.2 0.4 0.2
Torr 0.4 0.2 0.4 0.2 0.4 0.2 0.3 0.2
Maximum back pressure - standard (optimal*) mbarA 1150 (1300*) 1150 (1300*) 1150 (1300*) 1150
psig 2.2 (4.4*) 2.2 (4.4*) 2.2 (4.4*) 2.2
Power consumption at 10 mbar (7.5 Torr) kW 3.3 4.0 4.9 4.9 6.0 6.0 7.0 7.0
hp 4.4 5.4 6.6 6.6 8.0 8.0 9.4 9.4
Standard motor (380 - 400, 3 ph, 50 Hz) kW 5.5 5.5 7.5 11.0 11.0 15.0 18.5 25.0
Standard motor (380 - 400, 3 ph, 60 Hz) hp 7.5 7.5 10.0 15.0 15.0 20.0 25.0 30.0
Cooling water flow rate (adjustable)  l min4 1 - 8 1 - 10 1 - 8 1 - 10 1 - 10 1 - 10 1 - 10 1 - 10
gal min4 0.3 - 2.1 0.3 - 2.6 0.3 - 2.1 0.3 - 2.6 0.3 - 2.6 0.3 - 2.7 0.3 - 2.6 0.3 - 2.7
Cooling water supply pressure barg 2 - 10
psig 29 - 145
Seal purge flow (maximum), regulated to 0.3 - 0.5 barg (5 - 7 psig) l min4 20
ft³ min4 0.7
Seal purge supply pressure (minimum - maximum)  barg 2 - 10
psig 29 - 145
Noise (maximum with exhaust silencer) dB(A) 73 73 77 78 79 79 82 82
Weight (with frame and standard motor) kg 648 650 747 756 848 860 918 960
lbs 1429 1433 1647 1667 1870 1909 2024 2116
Process connection, inlet ANSI/DIN 2"/DN50 3"/DN80 3"/DN80 3"/DN80
Process connection, outlet ANSI/DIN 1.5"/DN40 1.5"/DN40 2"/DN50 2"/DN50
Pumping mechanism 3 stage reversed claw
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