SAE J747-2017 PDF

Scope: This SAE Standard applies to hydraulic directional control valves as applied to self-propelled work machines referenced in SAE J1116. It describes a laboratory test procedure for evaluating: a. Flow versus pressure drop b. Leakage rate c. Operating effort d. Metering characteristics versus spool travel@ pilot pressure@ or electrical current e. Relief valve characteristics The document applies to single and multiple section hydraulic directional control valves. This document illustrates axial@ manually operated valves although the test procedure is applicable to other input forms such as rotary actuation@ electric current@ hydraulic or pneumatic pressure. Performance characteristics such as metering hysteresis or dynamic response may have a significant effect on some of these tests. Purpose To provide a uniform procedure for measuring and reporting the operating characteristics of a hydraulic directional control valve and associated relief valve when so equipped.

SAE J747-2017 history