PRODUCT INFORMATION
External Exhaust Valve G3 Series◼ Model G3-M/G3-ME◼ Model G3-H/G3-HE

EXTERNAL EXHAUST VALVE

The external exhaust valve is attached to the line between
the leak tester and a tested part to exhaust the air after aleak test is finished. It keeps foreign materials, such as
water, oil and dust, in the tested part and line from entering
into the tester, thus preventing malfunction and quality
degradation.
Use of the external exhaust valve is especially
recommended for a tester that uses air leak test incombination with water submersion visual inspection.
(*The ingress of foreign materials may not be prevented
under some conditions.)◼ Specifications

G3-M
G3-ME
◼ Feature 1
The specially designed air-operated valve
prevents leaks, small volume change, andtemperature change that could cause errors
in leak test.

◼ Feature 2
To prevent the malfunction of the exhaust
valve due to dust, the sliding part and thedetection circuit are separated from eachother＊1. The ports to be connected to thetested part and the master are provided withspecial filters＊2.
＊1

G3-M/G3-ME＊2

G3-M/(G3-ME)

G3-H/(G3-HE)

Maximum operatingpressure

800 kPa

4.9 MPa

Proof pressure

1.0 MPa

7.5 MPaPort size

Rc1/4

Pilot pressure

400 to 700 kPa(Supplied from the leak tester)Accessory

For pilot pressure
Pipe outer diameter 4 mm, Length 3 mExternal dimensions

W116 L110(65) H100 mm
Including the mounting
brackets and parts

W116 L118(65) H112 mm
Including the mounting
brackets and parts

Applicable LeakTester

Leak testers with theoption ofLow/Medium-pressure
External Exhaust Valve

Leak testers with theoption for high-pressure
External Exhaust Valve◼ Pneumatic Circuit SystemStopvalve
ストップ弁（G3-Mのみ）(G3-M/G3-H)

Pilotpressure
パイロット圧マスタ
MasterAir
Leak Tester
ｴｱﾘｰｸﾃｽﾀ

ExternalExhaust
外部排気弁
Valve

G3-M/G3-H

排気ポートportExhaustワーク
Work◼ Feature 3
Since large flow can be used, there is almost
no effect on the pressurization time andexhaust time for the tested part.

◼ Feature 4
The integrated structure enables air to be
exhausted simultaneously on the tested partand master sides. The External Exhaust
Valve is controlled by the leak tester with theoption of External Exhaust Valve.

* The length of the pilot pressure pipe must be up to 3 m.
Otherwise, malfunctions could occur.
* Install the External Exhaust Valve horizontally, as close to thetested part (Work) as possible and lower than the leak tester.
* For details, refer to the operation manual of the Air LeakTester.

• The G3-M/G3-H is equipped with astop valve, so leak check is easy.
• Mounting brackets are included.
* The image is G3-H

* The contents of this product information are as of October 2021. The specifications are subject to change without prior notice.

Cosmo Instruments Co., Ltd.

http://www.cosmo-k.co.jp/2974-23 Ishikawa, Hachioji, Tokyo 192-0032 Japan

Phone: +81-(0)42-642-1357 Fax: +81-(0)42-646-2439

China: Cosmo (Shanghai) Trading Co., Ltd.
+86-(0)21-6575-6880
Shanghai, Tianjin, Guangzhou, Chongqing, Changchun, and Wuhan
Korea: Cosmo Korea Co., Ltd.
+82-(0)32-623-6961
Taiwan: Taiwan Cosmo Instruments Co., Ltd.
+886-(0)2-2707-3131
Malaysia: COSMOWAVE SDN.BHD.
+60-(0)3-51626677
Thailand: Cosmowave Technology Co., Ltd.
+66-(0)2-7361667
Indonesia: Pt. Cosmowave+62-(0)21-42900043
Vietnam: Cosmowave Technology Co.,Ltd. Vietnam Representative Office+84-(0)47876085

India: Cosmo Instruments India Pvt. Ltd. Head OfficeCosmo Instruments India Pvt. Ltd. South Zone Regional OfficeCosmo Instruments India Pvt. Ltd. Pune - Chakan OfficeCosmo Instruments India Pvt. Ltd. - Chennai Office
Germany: Cosmo EU Solutions Technology GmbH
USA: Cosmo Solutions Technology, Inc.
Mexico: Cosmo De Mexico
Brazil: Tex Equipamentos Eletronicos Ind. Com. Ltda.
Australia: Industrial Research Technology Pty. Ltd.

+91-(0)124-421-0946+91-(0)9663384423+91-(0)20-6933-2345+91-(0)9994364454+49-(0)212-383671-71+1-248-488-2580+52 472 748 62 94+55-(0)11-4591-2825+61-(0)412-176-674

G3-985B1-C