This standard specifies the classification, marking, requirements, test methods, inspection rules, packaging and storage of marine low-pressure external thread bronze stop check valves (hereinafter referred to as stop check valves). This standard is applicable to the design, manufacture and acceptance of stop and check valves for seawater, fresh water, fuel oil, lubricating oil and steam with a temperature not higher than 250°C.
GB/T 1953-2008 Referenced Document
CB/T 3927 Wall thickness of casting body for marine valve