This standard specifies the technical requirements for materials, manufacturing, assembly, testing and acceptance of glass-lined upward-expanding discharge valves, glass-lined downward-expanding discharge valves, glass-lined diaphragm valves, and glass-lined flat valves. This standard applies to glass-lined valves with nominal pressures less than or equal to 1.0MPa and medium temperatures higher than -20°C and lower than or equal to 200°C.