Install in the middle of the piping between the leak tester and the work to exhaust air when the leak test is completed.
Prevents foreign matter such as water, oil, and dust in the works and piping from entering the leak tester, thereby preventing malfunctions and quality deterioration. We recommend especially when performing both water dunk and air leak tests. It can be used at test pressures of up to 4.9 MPa.
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basic information
Feature 1 The specially designed air-operated valve prevents leaks, small volume change, and temperature 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 the detection circuit are separated from each other. (G3-M/G3-ME) Each port connecting to the work and master is equipped with a dedicated filter. (G3-M/G3-H) Feature 3 Since large flow can be used, there is almost no effect on the pressurization time and exhaust time for the work. Feature 4 The integrated structure enables air to be exhausted simultaneously on the work and master sides. The External Exhaust Valve is controlled by the leak tester with the option of External Exhaust Valve.
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Applications/Examples of results
Air leak test Prevention of contaminants (dust, water, oil, etc.) from entering the leak tester.
Line up（4）
| Model number | overview |
|---|---|
| G3-M | Maximum test pressure: 800 kPa Proof pressure: 1.0 MPa Port size: Rc1/4 Pilot pressure: 400 to 700 kPa (supplied from the leak tester) Applicable leak tester: Low and medium pressure leak testers applicable for External Exhaust Valve |
| G3-ME | Maximum test pressure: 800 kPa Proof pressure: 1.0 MPa Port size: Rc1/4 Pilot pressure: 400 to 700 kPa (supplied from the leak tester) Applicable leak tester: Low and medium pressure leak testers applicable for External Exhaust Valve *This model comes without ball valves. |
| G3-H | Maximum test pressure: 4.9 MPa Proof pressure: 7.5 MPa Port size: Rc1/4 Pilot pressure: 400 to 700 kPa (supplied from the leak tester) High pressure leak testers applicable for External Exhaust Valve |
| G3-HE | Maximum test pressure: 4.9 MPa Proof pressure: 7.5 MPa Port size: Rc1/4 Pilot pressure: 400 to 700 kPa (supplied from the leak tester) Applicable leak tester: Low and medium pressure leak testers applicable for External Exhaust Valve *This model comes without ball valves. |
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Company information
Cosmo’s Air Leak Testers began with the automation of cylinder block airtightness tests for engines in 1970. Our products are utilized in various fields including automotive parts, gas, water supply, medical, electrical, electronics, and food. In line with the overseas expansion of Japanese automakers, we began our own overseas expansion in 1983. We now have 24 sales and service offices in 13 countries. We are offering proposals and providing after-sales services overseas as in Japan. Currently, in order to support the electrification of automobiles, our products are being used for leak testing of parts for electrification such as battery cases and inverters as well as for fitting testing of electric power connectors. We are contributing to the efforts by our customers to prevent emissions of CO2. In various regions of South and Southeast Asia, we are donating pressure measuring equipment to technical schools to improve the quality of education and exchange technologies with local machinery manufacturers. We have been making every effort to help improve the industrial base through local manufacturing of high-quality leak testing equipment.
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