WSD water separators and IWD, EWD, WD & TWD drains - Atlas Copco Thailand
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Water separators and drains

WSD water separators and IWD, EWD, WD & TWD drains

Contact a water separator and drains expert

Minimal maintenance, high reliability

With no moving parts, the water separators offer high reliability while requiring minimal maintenance. Both automatic and manual drain options are available

Energy savings

The intelligent drain function monitors condensate build-up with liquid level sensors. It evacuates the condensate only when necessary to avoid wasting compressed air and to generate considerable energy savings

Choose from a wide range

A wide range of EWD drains is available for oil-contaminated condensate. This includes models with an additional hard coating for use with oil-free and aggressive condensate

Reliable and clean air

The air that leaves a compressor reaches 100% humidity. It also contains oil (unless you are using an oil-free compressor) and solid particles. Together, they form an abrasive, often acidic, oily sludge. Without air treatment, this murky mix will enter your compressed air system, corroding pipe work, damaging pneumatic tools and potentially compromising final products.

WSD Water separators

 WSD - air/water separator

Our WSD water separators increase the lifespan and reliability of your compressed air cooler through efficient condensate management. The water separator prevents condensed water from building up in your air system. The separator comes as standard with Atlas Copco’s aftercoolers and can also be installed at any point in your system. Made entirely of rustproof material, these cyclone-based separators remove water aerosols to protect system components such as dryers and filters. Maintenance-free and without moving parts, they come with an automatic or a manual drain.

Water drains

Atlas Copco offers a wide range of drains, extending our premium quality throughout your compressed air.

The remaining humidity in compressed air turns into water as the air cools while it moves through the system. Because water causes corrosion and damage, drains must be installed throughout your network. Atlas Copco has a range of drains; automatic, electronic or timer drains, that will keep your aftercooler, dryer, air receiver, and other equipment working optimally.

Jump to your selection ⤸

Discover our range of drains

IWD electronic drains

The IWD electronic drain collects and removes liquid moisture from your air system effectively, reliably and efficiently. The zero-loss drain only releases its moisture content when it reaches a pre-set level. Leaving a minimal amount of moisture, the IWD ensures no energy can escape as the receiver empties. Thanks to its special housing, the IWD can be used in oil-lubricated and oil-free installations.

Check out the IWD’s technical specifications and dimensions here. 

EWD electronic drains





The EWD range of electronic drains offers safe, dependable and efficient condensate drainage. The intelligent drain function monitors condensate build-up and removes the liquid only when necessary, avoiding compressed air loss. Special EWD drains are also available for oil-contaminated condensate. The range can be delivered with additional hard coating for oil-free and aggressive condensate.

Read more about this product in the technical specifications and dimensions.

WD automatic drains

The WD 80 drain valve provides completely automatic drainage of the water that collects at the lowest point of a compressed air system (e.g. at the bottom of a receiver or cyclone separator). Its patented design ensures minimal maintenance.

Explore this drain in the technical specifications and dimensions.

TWD timer drain

The TWD timer drain removes condensate using a solenoid valve in combination with an electronic timer. Pre-selecting the timing and length of each drain cycle minimizes compressed air loss. Compact, easy to install and fully automatic, the TWD is a cost effective drain solution for compressed air filters and vessels.

Go to the technical specifications and dimensions for more information. 

Jump to the technical specifications or explore the product brochures for more detailed information about the available drains.


The Atlas Copco IWD removes liquid moisture from your air system effectively, reliably and efficiently:

  • Zero-loss electronic drain
  • Oil-lubricated and oil-free installations
  • Easy to use control panel with manual drainage test function
  • Auto-cleaning feature

Get in touch with our experts for more detailed information on this range of water separators and drains

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Technical specifications and dimensions

WSD water separators

Water separator type

Capacity range

Maximum working pressure

Connections

 

Dimensions

 

 

l/s

cfm

Bar

Inlet/outlet

Height mm

Width mm

Length mm

WSD 25

7-60

15-127

20

G 1

332

130

185

WSD 80

50-150

106-318

20

G 1½

432

130

185

WSD 250

125-350

265-742

20

G 2½

532

160

230

WSD 750

300-800

636-1695

20

83 mm

532

160

230

IWD electronic drains

Drain type

Maximum compressor capacity

Maximum dryer capacity

Maximum working pressure

Dimensions

 

l/s

cfm

l/s

cfm

Bar

Height mm

Width mm

Length mm

IWD 50

50

106

100

212

16

120

60

136

IWD 105

105

222

210

445

16

116

69

160

IWD 125

125

265

250

530

16

140

69

163

IWD 250

250

530

500

1059

16

155

69

163

IWD 500

500

1059

1000

2119

16

214

69

163

IWD 2665

2667

5651

5333

11300

16

230

123

173

IWD 5000

5000

10594

10000

21189

16

230

148

247

EWD electronic drains

Drain type

Maximum compressor capacity

Maximum dryer capacity

Maximum working pressure

Dimensions

 

l/s

cfm

l/s

cfm

Bar

Height mm

Width mm

Length mm

EWD 50

65

138

130

275

16

115

70

171

EWD 50 A

65

138

130

275

16

115

70

171

EWD 50 B

650

1380

1729

3640

16

115

70

171

EWD 50 L

650

1380

1729

3640

16

115

70

171

EWD 75

98

208

194

411

16

141

65

150

EWD 75 C

98

208

194

411

16

141

65

150

EWD 75 CHP

98

208

194

411

63

141

65

150

EWD 330

433

917

866

1835

16

162

93

212

EWD 330 C

433

917

866

1835

16

162

93

212

EWD 330 CHP

433

917

866

1835

25

162

93

212

EWD 1500

1950

4132

3900

8264

16

180

120

252

EWD 1500 C

1950

4132

3900

8264

16

180

120

252

EWD 16K C

21670

45920

43340

91830

16

280

254

280

WD automatic drains

Drain type

Maximum working pressure

Drain capacity

Connections

 

Dimensions

 

 

Bar

l/h

 

Height mm

Width mm

Length mm

WD 80

20

200

G ½

182

132

132

TWD timer drains

Drain type

Maximum working pressure

Connections

 

Dimensions

 

 

Bar

Inlet

Valve

Height mm

Width mm

Length mm

TWD

16

G ½-¼

G ½

126.5

131

95

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