ASTM F2138-12(2017)

Die Annotation des Normtextes ASTM F2138-12(2017) :

This specification covers requirements and test methods for excess flow valves for natural gas piping systems. Tests methods requirements shall determine the performance characteristics of an excess flow valve installed in a straight piece of pipe. Excess flow valves shall conform to specified materials, dimensions, maximum inlet pressure, temperature rating range, and design requirements. It shall be tested with the following performance requirements: trip flow, leak rate, bypass flow, pressure drop, reset parameters, snap acting loads, and cycle testing.


Keywords:
excess flow valve, (EFV),, ICS Number Code 75.200 (Petroleum products and natural gas handling equipment)