This part of ISO 5599 specifies the requirements for a mounting interface surface with optional electrical connector for five-port pneumatic directional control valves, for use at a maximum rated pressure of 1,6 MPa [16 bar]. It gives
— dimensions and tolerances of the interface features,
— port identification,
— identification of the result of control-mechanism actuation, and
— dimensions, tolerances and specifications for optional interface electrical connector mating.
It is not applicable to the functional characteristics of interfaces.
note:1) 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm