CJ/T 335-2010 (English Version) PDF

Scope: This standard specifies the terms and definitions, classification and models, structure and materials, requirements, test methods, inspection rules, signs, labels, instructions for use and packaging of shut-off valves and relief valves used in urban gas (except liquefied petroleum gas) transmission and distribution systems. , transportation and storage. This standard cut-off valve is suitable for use with urban gas (except liquefied petroleum gas) as the working medium, the inlet pressure is not greater than 4.0MPa, the operating temperature range is -20°C ~ 60°C, the nominal size is not greater than DN300, and the gas flows through the valve itself. Drive source gas self-operated shut-off valve. This standard relief valve is applicable to urban gas (except liquefied petroleum gas) as the working medium, the inlet pressure is not greater than 0.1MPa, the operating temperature range is -20℃~60℃, the nominal size is not larger than DN200, and the gas flows through the valve itself. Drive source gas self-operated relief valve. Exceptions include shut-off valves and relief valves for indoor gas systems.

CJ/T 335-2010 history