Nehzat - Assistant Professor, Department of Mechanical Engineering, IUT, Iran
Soltani - Mechanical Engineering Group, Islamic Azad University of Najafabad Branch
Fadaei - Assistant Professor, Department of Mechanical Engineering, IUT, Iran
Biriya - Iranian National Gas Company, Isfahan

Diaphragm gas meter is one of the important and most valuable pieces of equipment used in gas supplies. One of the problems facing today's customers, is the numerous failure and replacement with a new meter before finishing it’s life time. In this study, 274 faulty diaphragm gas meters are selected randomly as sample. After tracing the reasons of causing these faults, faults are classified in 4 main groups with special code that defines the type of fault. Based on the results for reducing the failures some recommendations are made.

Distribution gas, Diaphragm gas meter, Gas flow equipment, flow meter