\nT/CAS ES381716001-2022 Industrial Product Quality Classification and Evaluation Rules for Control Valves and Control Ball Valves
T/CAS ES381716001-2022
Basic Information
Scope
Scope: This document specifies the evaluation procedures and requirements for quality grading of control ball valves, evaluation methods, and quality grading. This document applies to shut-off type O-ring ball valves (solid ball) with a medium temperature above -29°C and a pressure rating of PN16 to PN420 (Class 150 to Class 2500). Control ball valves include fixed ball hard-sealed control ball valves, floating ball hard-sealed control ball valves, fixed ball soft-sealed control ball valves, and floating ball soft-sealed control ball valves. This document does not apply to high-frequency ball valves with a switching frequency of ≥10,000 times/year. Main technical content: 1. Scope: This document specifies the evaluation procedures and requirements for quality grading of control ball valves, evaluation methods, and quality grading. This document applies to shut-off type O-ring ball valves (solid ball) with a medium temperature above -29°C and a pressure rating of PN16 to PN420 (Class 150 to Class 2500). Control ball valves include fixed ball hard-sealed control ball valves, floating ball hard-sealed control ball valves, fixed ball soft-sealed control ball valves, and floating ball soft-sealed control ball valves. This document does not apply to high-frequency ball valves with a switching frequency of ≥10,000 times/year. 2. Normative references: The content of the following documents is an integral part of this document through normative references. Among them, the referenced documents with a specified date only apply to the version corresponding to that date; the latest version (including all amendment sheets) of the unspecified date referenced documents applies to this document. - GB/T 4213-2008: Pneumatic Regulating Valves - GB/T 12220: Marking of Industrial Valves - GB/T 12224: General Requirements for Steel Valves - GB/T 13927-2008: Pressure Testing of Industrial Valves - GB/T 21385: Metal Sealed Ball Valves - GB/T 21465: Valve Terminology