ISO International Standard

ISO/TR 17209:2013 specifies the dimensions and provides other data relating to cavities with ISO 725 UN and UNF threads in which two-, three-, and four-port screw-in cartridge valves are mounted, in order to ensure dimensional interchangeability.

It is applicable to two-, three-, and four-port screw-in cartridge valves generally used in industrial, agricultural, mining and mobile equipment.