This International Standard specifies, in order to ensure interchangeability, the dimensions and other characteristics of surfaces on which hydraulic pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves are mounted.
It is applicable to mounting surfaces for hydraulic pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves, which represent current practice. They are generally used in industrial equipment.
BS ISO 5781:2000 history
2016BS ISO 5781:2016 Hydraulic fluid power. Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves. Mounting surfaces
2000BS ISO 5781:2000 Hydraulic fluid power - Pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces