EDP

Edwards, a world leader in dry vacuum pump technology, successfully pioneered the use of environmentally friendly dry vacuum pumps in the early 1980s. With hundreds of thousands of systems installed worldwide, Edwards dry pumps create significant benefits for customers in many applications and industries.

The EDP chemical dry pumps satisfy the demanding requirements of the chemical, petrochemical and pharmaceutical industries, meeting the highest safety and performance standards.

EDP pumps are based on Edwards’ oil-free, non-contacting, award-winning, reverse claw mechanism. They provide consistent vacuum at high efficiencies and low costs of ownership. Dry pumps improve product quality and completely eliminate all problems of process contamination and the creation of polluted effluent.

Pumping Speeds
80, 160, 250, 400 m3/h

Final Pressure
0.5 mbara

Versions
Direct Water Cooled, Indirect Water Cooled

Sustainable
The EDP dry pump is an oil, water and steam free running system.

0.5mbara

Performance
Excellent vacuum levels, even with Gas Ballast. Fast pumpdown from atmospheric pressure.

Dry Mechanism
Ideal to replace oil-sealed or liquid ring pumps, with better vacuum levels.

Low Maintenance
Conventional industrial maintenance with yearly oil changes and up to 3-year bearing changes.

Robust
Industry proven, tried and tested, specifically designed for the chemical industry.

Low Power
Effective vacuum generation with low power requirements vs traditional technologies.

EDP pump sizes

Peak pumping speed

Ultimate vacuum (total pressure)

Max. back pressure (standard/optional)

Power consumption @ 10mbar

Noise (max. with exhaust silencer)

Inlet Connection

Outlet Connection

m³/h

mbar

mbar

kW

dBA

ANSI/DIN

ANSI/DIN

EDP80

83

0.5

1150 / 1300

3.3

73

2”/DN50

1.5”/DN40

EDP160

163

0.5

1150 / 1300

4.9

77

3”/DN80

1.5”/DN40

EDP250

260

0.5

1150 / 1300

6.0

79

3”/DN80

2”/DN50

EDP400

377

0.4

1150

7.0

82

3”/DN80

2”/DN50

Performance & Reliability

Product Quality & Repeatability

Better vacuum levels results in better end-product quality for many customer thanks to lower contamination levels and/or lower product processing temperatures that help preserve the properties of the raw material.
Repeatable vacuum performance and stable operation, even during process upsets, is desirable for any production environment. Factors like oil/water temperature or condition, that are necessary in oil-sealed and liquid ring vacuum pumps as a sealant for the compression mechanism, do not affect dry running vacuum pumps.

Simple, Robust Mechanism

EDP pumps are based on Edwards' oil-free, non-contacting, award-winning, reverse claw mechanism.
This robust mechanism has been specifically designed to provide stable operation for heavy-duty applications even with variable process conditions. It has been tried, tested and proven by the industry over thousands of chemical, pharmaceutical and petrochemical installations worldwide and represent the dry vacuum pump standard for many customers worldwide.
In addition to its unique mechanical design, the high mass of the pump together with the robust indirect cooling mechanism provides a unique thermal inertia that allows the pump to handle real-life process upsets and maintain a stable operation.

Vapour & Particles Handling

The EDP has been proven as a very robust dry vacuum pump with a compression mechanism, sealing design and an internal temperature profile that allows excellent handling of process vapours and also a relatively large amount of liquids and solids from process upsets.
One of the keys to chemical dry pumping is the ability to maintain an internal temperature profile that is optimal at maintaining the process vapours in the gas phase throughout the pump, maintaining a stable internal temperature during the process and avoiding the extremes of condensation (too cold) and polymerisation (too hot)
The EDP uses a combination of a thermostatic control valve (to adjust the temperature profile for each unique installation), a high body mass (which allows a more stable thermal inertia - specially important for fluctuating process conditions or utilities) and an indirect cooling mechanism through a heat exchanger (to better maintain the thermal profile and keep the pump's internal cooling jacket clean and free-flowing)
This combination results in a very robust vacuum pump to pump chemicals.

Pump Internal Cleaning

The EDP internal mechanism can be cleaned during a process or at the end of a process batch to remove process material even for the harshest processes. The pump can be flushed or soaked automatically without the need for manual internal cleaning of the rotors and stators.

Effective Sealing Mechanism

Edwards has developed proprietary sealing mechanisms for all of its dry pumps and provide the most effective pump sealing technologies in the market for aggressive vacuum applications. Sealing of the oil box and bearings is provided by a combination of internal elements and the purging of seals with Nitrogen.
Unlike other pumps, the supply of purge gas is a non-critical element on the EDP, meaning that the occasional failure of reduction of purge gas flow will not result in damaged electronics or motors.

Sustainability & Energy Efficiency

While the main benefit for customers using Edwards dry pumps tends to be an improvement in the quality of their product, the EDP dry-running chemical vacuum pumps help reduce the environmental footprint generated by vacuum pumps. In comparison to oil-sealed or liquid-ring vacuum pumps, the pump does not results in waste oil generation and treatment nor in a contaminated water effluent respectively. In addition to this, dry pumps enable the recovery of uncontaminated and many times valuable process gases.
In addition to the low power consumption of the EDP vacuum pump relative to wet technologies, the EDP vacuum pump can be used in combination with a motor inverter for pressure control as well as stand-by operation, allowing increased reliability while consuming very little power.

Robust Cooling Mechanism

Edwards EDP chemical dry vacuum pumps are configured as standard with indirect water cooling through a shell and tube heat exchanger located on the side of the pump body. It can also be removed for some very specific applications.

The EDP uses a combination of a thermostatic control valve (to adjust the temperature profile for each unique installation), a high body mass (which allows a more stable thermal inertia - specially important for fluctuating process conditions or utilities) and an indirect cooling mechanism through a heat exchanger (to better maintain the thermal profile and keep the pump's internal cooling jacket clean and free-flowing)

Sistemisation

After selecting the right dry vacuum pump it is important to consider the accessories that will complete the vacuum system in order to meet with the process and Atex requirements as well as to provide maximum pump reliability and longevity.

We have the capability to supply individual vacuum pumps and complete turnkey vacuum systems including hardware, controls and expert technical and service support. In the simplest expression, the EDP chemical dry vacuum pump can be supplied as a primary pump only, or in combination with a booster pumps, valves, traps, condensers etc. in a compact footprint.

Dimensions

EDP + EH250/EH500

EDP + EH1200/EH2600/4200

Other combinations available.Height and width dimensions will differ if using larger or smaller boosters.

Performance Curve

Documentation