Ревидиран
specifies the requirements for the inspection and routine testing of control valves manufactured in conformity with the other parts of IEC 60534.is applicable to valves with pressure ratings not exceeding Class 2500. The requirements for actuators apply only to pneumatic actuators.
ПОВУЧЕН
IEC 60534-4:1999 ED2
ПОВУЧЕН
IEC 60534-4:2006 ED3
99.60
Повлачење ступило на снагу
16. 12. 2021.
ОБЈАВЉЕН
IEC 60534-4:2021 ED4