Industrial process control systems - Part 2: Methods of evaluating the performance of intelligent valve positioners with pneumatic outputs mounted on an actuator valve assembly (IEC 61514-2:2013) (english version)
Industrial-process control valves -- Part 8-4: Noise considerations - Prediction of noise generated by hydrodynamic flow (IEC 60534-8-4:2015) (english version)
Devices to prevent pollution by blackflow of potable water - Pipe interrupter with atmospheric vent and moving element DN 10 to DN 20 - Family D, type B
