BS 4062-1:1982

Foreword
Cooperating organizations
Method
1. Scope
2. Definitions
3. Symbols and units
4. Test installations
5. Test procedure
6. Test report
Appendices
A. Errors and classes of measurement
B. Pipe loss
C. Use of practical units
D. Pretest checklist
Tables
1. Symbols and units
2. Permissible variation in indicated fluid temperature
3. Permissible systematic errors of measuring
    instruments as determined during calibration
4. Practical units
Figures
1. Test circuit
2. Non-dimensional presentation for directional control
    valve
3. Dimensional presentation for directional control
    valve
4. Dimensional presentation for spring-loaded non-
    return valve
5. Dimensional presentation for spring-loaded non-
    return valve
6. Pipe friction factor

Methods to be employed in the determination under steady state conditions, of the pressure differential caused by the flow through any given path in a hydraulic fluid power valve. The requirements for test installations, procedures and presentation of results are included. Appendices cover pipe loss measurement, use of practical units and pretest checklist.