Membrane Air Dryer IDG□A/IDG


・It is possible to easily supply dry air using the hollow fiber membrane.
・Power supply not required
・Compatible with low dew points (–60ºC)
・No vibration or heat discharge
・With a dew point indicator

Other Data :
> Safety Instructions

> Air Preparation Equipment/Precautions
> Model Selection Guide/Quick Reference Guide
> Green Procurement (RoHS)

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Technical Data


■Possible to easily supply dry air using the hollow fiber membrane!

Energy saving Reduced in purge air flow by up to 39 (L/min [ANR])

Cost reduced by up to 21,060 yen/year!

■Space saving

Total length is shortened Max. 59 mm Series IDG30A to 100A

■Flexible mounting orientation Easy to install in narrow spaces!

Series IDG1

■High performance

Time to reach the standard dew point Shortened by 40 minutes

Under SMC test condition

■Dew point indicator visually confirms air drying.

(Except IDG1)
(Semi-standard: IDG3, IDG5, IDG3H, IDG5H)

■Model with fitting for purge air discharge is also available.

When purge air discharge is undesirable in the area around the membrane air dryer, it can be discharged to atmosphere via tubing (semi-standard).

■Reduced in purge air discharge noise with built-in silencer


■Dehumidification Principle

The membrane air dryer uses hollow fibers composed of a macro molecular membrane through which moisture passes easily, but is difficult for air (oxygen and nitrogen) to pass through.

When humid, compressed air is supplied to the inside of the hollow fibers, only moisture permeates the membrane and moves to the outside due to the pressure difference between the moisture inside and outside of the fibers. The compressed air becomes dry air and continues out of the dryer. Part of the dry air from the outlet side is passed through a very small orifice to reduce the pressure and purge the outside of the hollow fibers. The moisture which permeated to the outside of the hollow fibers is discharged to the atmosphere by this purge air. In this way, the partial pressure outside of the hollow fibers remains low and dehumidification is continuously performed.

■Application Examples

Machine Tool

Measuring Machine

Semiconductor-related Manufacturing Equipment

Powder Coating

Food Machinery

Packaging Machine
(sealing of film and paper package)


• Dental equipment • Ozonizers, Hydrogen gas generating equipment • Fine particle drying, Transfer equipment • Condensation prevention in control panels • Chemical analysis equipment • Printed circuit board IC mounting machines • Drying and cleaning of precision parts • General pneumatic equipment and pneumatic tools