Fixed speed dry screw vacuum pumps

DWS 200-500

The Atlas Copco DWS range of dry screw vacuum pumps features an innovative design with variable pitch dry screws

Robust pump for harsh industrial applications

Available in water-cooled and air-cooled variants, the DWS range - DWS 200, DWS 300, and DWS 500 is built to handle harsh contaminants in challenging and harsh industrial environments.

Lower energy consumption

The hybrid rotor design uses a combination of parallel and tapered rotor profiles, helping to optimize performance while limiting the footprint and power consumption.

Purge protection

Purge protection helps extend service intervals and prolong pump-life - the DWS is built to handle harsh contaminant ingress.

Variants available

Available in water-cooled and air-cooled variants. Direct and indirect air-cooled options are available with the DWS 200 and DWS 300 available exclusively as an air-cooled option.

Easy to configure dry vacuum pump

Configuration options for hazardous process environments are available and the pump can be easily customized to a dry vacuum pump system.

Wide range of accessories

A wide range of accessories are available, including service kits, booster support kits and silencer kits.

Clean, robust dry screw vacuum pump for demanding applications

The Atlas Copco DWS range of fixed speed dry screw vacuum pumps features an innovative design with variable pitch dry screws. Engineered to deliver clean and reliable vacuum flow, the DWS series are a robust series of dry vacuum pumps. The dry screw technology offers lower maintenance costs and are used in diverse industrial applications requiring no lubricants in the pumping chamber.

At the heart of the DWS Dry Screw pump is the tapered variable pitch dry screw mechanism, quick pump-down times, high pumping speed & a high tolerance for particulates.

The DWS 200-500 series of dry screw vacuum pumps are ideally suited for:

Lithium-ion batteries
Automotive coating
Freeze drying
Industrial glass coating
Solar cell manufacturing
Heat treatment
Brazing
Thin film deposition
Plastic extrusion
Pharmaceuticals
Renewable energy

Technical specifications

		Unit	DWS 200	DWS 300	DWS 500
Performance	Peak Pumping Speed	m³h^-1 / CFM	210 / 124	>280 / >165	>460 / 271
Performance	Ultimate Pressure	mbar / Torr	<0.05 / <0.04	<0.01 / <0.008	<0.01 / <0.008
Full Load Power	@ ultimate pressure	kW / hp	4.1 / 5.5	4.5 / 6	4.6 / 6.5
Full Load Power	@ peak pumping load	kW / hp	6.4 / 8.6	8.2 / 11	11 / 15
Vacuum Connections	Inlet connection		ISO63
Vacuum Connections	Exhaust connection		NW40		ISO 63
Cooling Water	Connection		G1/2" female threads
	Flow	L/min^-1 / Gal/min^-1	<8 / <2.1
	Supply pressure (max)	bar / psig	7 / 100
	DP across pump (min)	bar / psig	0.2 / 2.9
	Temperature	^oC / ^oF	5-35 / 41-95
	Primary cooling circuit volume (Glycol water mixture volume in case of variant with direct cooling)	I / gal	6 / 1.6		NA
Purge Gas	Connection		G1/4" female threads
	Pressure	bar / psig	2.5-6.9 / 36-100
	SSP flow	Imin^-1	<12
	Gas allast flow*	Imin^-1	0-5
Operating data	Noise	dB(A)	<76
	Operating Temperature	^oC / ^oF	5-40 / 41-104
	Exhaust Back Pressure (Max)**	mbar / psia	1200 / 17.4
	System IP rating		IP54