Hydraulic fluid power — Electrically modulated hydraulic control valves — Part 1: Test methods for four-port directional flow-control valves

ISO 10770-1:2009 describes methods for determining the performance characteristics of electrically modulated, hydraulic, four-port directional flow-control valves.

ISO 10770-1:2009 describes methods of testing electrohydraulic, four-port directional flow-control valves. This type of electrohydraulic valve controls the direction and flow in a hydraulic system.