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This International Standard specifies methods for
testing hydraulic valves which are used for the
control of flow or pressure in a circuit in order to
determine their steady-state and dynamic
performance.
Requirements for test installations and procedures,
measurements and presentation of results are
specified. This International Standard does not
establish limits of performance since the suitability
of the valve for its intended purpose should be
agreed between the manufacturer and the user.
Accuracy of measurement is divided into three
classes (A, B and C) which are explained in
Annex A. Guidance as to the use of practical units
for the presentation of results is given in Annex B.
Proportional control valves are not dealt with in this
International Standard. Electrohydraulic
servovalves are dealt with in ISO 6404.