ISO 27895:2009
Current
The latest, up-to-date edition.
Vacuum technology Valves Leak test
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English
30-11-2009
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ISO 27895:2009 specifies methods for the leak testing of vacuum valves used for control of gas flow or vacuum pressure in a vacuum system.It is applicable to vacuum valves that can be closed to leak rates less than 1 x 10-5 Pa m3/s for trace gas. The methods employ a sealing arrangement for the valve body, which is also specified in ISO 27895:2009. The methods are suitable for the verification of valve specifications.
A valve leak rate less than the nominal leak rate specified by the manufacturer during and after the operation enables the specification of such valve operating conditions as operating pressure range, permissible pressure difference between ports, bake-out temperature or operating temperature, and life cycle.
| DevelopmentNote |
Supersedes ISO/DIS 27895. (12/2009)
|
| DocumentType |
Standard
|
| Pages |
11
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| UNI ISO 27895:2020 | Identical |
| BS ISO 27895:2009 | Identical |
| GOST R ISO 27895 : 2013 | Identical |
| NEN ISO 27895 : 2009 | Identical |
| ASTM E 1603 : 1999 | Standard Test Methods for Leakage Measurement Using the Mass Spectrometer Leak Detector or Residual Gas Analyzer in the Hood Mode |
| ISO 3530:1979 | Vacuum technology — Mass-spectrometer-type leak-detector calibration |
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