SKU: WF38 Category:

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Compressed air is a safe and reliable power source that is widely used throughout the industry. In proportion to its wide utilization, problems caused by coalesced liquid in compressed air are increasing rapidly. Therefore, WF (Water-Free) is employed to remove moisture in compressed air to enhance its reliability.

Water Free Unit

Operating Principle

Compressed-air is supplied into ① the INLET port on the Water Free, then the air passes through ② the DIFFUSER. Compressed-air that passes through the DIFFUSER is usually a combination of air and moisture. The incoming compressed air is pushed into ③ the LIQUID SEPARATOR. The moisture falls through the LIQUID SEPARATOR, and the air is able to exhaust out without any moisture.

① Air Inlet
② Diffuser
③ Liquid Separator
④ Filter
⑤ Water-Free Unit Body
⑥ Auto-Drain


Build an Order #

1. Basic Model

WFWater free unit

2. Air Supply Port

38Air supply port, G3/8″ female

3. Auto-Drain

AAuto-Drain device

4. Mounting Bracket

BMounting bracket


General Specifications

Max Flow Rate1,300 Nl/min
Depression0. bar
Operating Pressure3~10 bar
Water Drain Effect99 %
Oil Removal70 %
Drainage MethodAutomatic
Air Supply PortG3/8″
Drain OutletPush-in fitting for outer diameter Ø6 mm air-hose
SizeØ90 X 362 mm
Weight1.85 Kg



H1362 mm
H2346 mm
H3175 mm
H4170 mm
D190 mm
D280 mm
W56 mm

Order Numbers

Water Free Unit & Spare Parts

WF-38-ABWater-free unit, G3/8″ port, Auto-drain, Mounting bracket
WF-38-AWater-free unit, G3/8″ port, Auto-drain
WF-38Water-free unit, G3/8″ port
13S021Auto Drain, 402-04

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