Leak test circuit dedicated switching valve
It demonstrates its effectiveness in pneumatic circuits where leak is not allowed. When switching between work and master is required, a switching valve needs to be inserted into the test circuit that must not leak. Cosmo Instruments offers a dedicated switching valve based on our expertise in leak testing. This ideal valve prevents valve leaks and also prevents deformations.
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basic information
Features and Functions Single to Triple valves available, and you can select NO (normally open), NC (normally closed) or their combination. By installing an optional Stop Valve, leak check can be easily performed. Each manifold port has a built-in mesh filter. * NL Select Valve cannot be controlled by Air Leak Tester. Separate PLC and solenoid valves will be required.
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Applications/Examples of results
Switching valve dedicated to air leak test circuits
Line up（9）
| Model number | overview |
|---|---|
| NL-S2-10M | Single valve, Normally Open Test pressure range: 0 to 800 kPa Pilot pressure: 400 to 700 kPa |
| NL-S2-11M | Single valve, Normally Closed Test pressure range: 0 to 800 kPa Pilot pressure: 400 to 700 kPa |
| NL-S2-20M | Dual valves, Normally Open Test pressure range: 0 to 800 kPa Pilot pressure: 400 to 700 kPa |
| NL-S2-21M | Dual valves, Normally Closed Test pressure range: 0 to 800 kPa Pilot pressure: 400 to 700 kPa |
| NL-S2-22M | Dual valves (Normally Open 1 / Normally Closed 1) Test pressure range: 0 to 800 kPa Pilot pressure: 400 to 700 kPa |
| NL-S2-30M | Triple valves, Normally Open Test pressure range: 0 to 800 kPa Pilot pressure: 400 to 700 kPa |
| NL-S2-31M | Triple valves, Normally Closed Test pressure range: 0 to 800 kPa Pilot pressure: 400 to 700 kPa |
| NL-S2-●●V | The V model is for vacuum. Test pressure range: 0 to -100 kPa |
| NL-S2-●●B | The spec. B includes a ball valve. |
catalog（6）
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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.