International Organization for Standardization (ISO)
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ISO 6948:1981
Scope
Specifies tests applicable to steam traps, these tests may be conducted to ensure the correct functioning of a trap or to evalute the performance of a particular design. Lays down the tests to be performed relative to each one of these two categories and describes briefly the corresponding test methods.
ISO 6948:1981 history
1981ISO 6948:1981 Automatic steam traps; Production and performance characteristic tests