This standard specifies the classification and marking, requirements, test methods, inspection rules, marking, packaging and storage of marine hydraulic control stop check valves with flange connection dimensions according to GB/T 569 and GB/T 2501. This standard applies to the design, manufacture and acceptance of stop and check valves for ship piping systems.
CB/T 4158-2011 Referenced Document
CB/T 3927 Wall thickness of casting body for marine valve