Specification for gas meter unions and adaptors Ingestion-build-209208 Qualitative classification of spruces and

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Specification for gas meter unions and adaptors Ingestion-build-209208 Qualitative classification of spruces and1 Scope This British Standard specifies requirements and test methods for unions and adaptors for the installation of low pressure gas meters. It is applicable to unions and adaptors for gas meters for use with 1st, 2nd and 3rd family gases at temperatures between 20 C and +60 C, up to a maximum operating pressure of 75 mbar 1) and a maximum incidental pressure of 200 mbar. The gas tightness of the gas meter unions and adaptors is also specified. NOTE