SAE J1117:2019 pdf free
SAE J1117:2019 pdf free.Method of Measuring and Reporting the Pressure Differential-Flow Characteristics of a Hydraulic Fluid Power Valve
As the flow passes through these valves, some power loss is experienced due to restrictions and directional changes of the fluid resulting in a differential pressure. Flow is passed through the valve through the ports and in positions as specified. Pressure is recorded at flow increments to produce a well defined curve. The tare loss of the test circuit is subtracted for final data presentation.
Install the test valve in the test circuit (see Figure 1) using as input and output ports those indicated in the test request.
Set the control variables for the flow path indicated on the test request.
Test the circuit per ARP24 and obtain enough data between zero flow and the specified maximum flow (Qm) to produce a well-defined curve as ilustrated in Figure 3. If data is measured manually, record on a chart similar to Figure 2.
Remove the test valve from the test circuit and connect the input and output lines to complete the test circuit without the test valve per ARP24 and repeat 10.3.
Determine the pressure differential (AP) by subtracting the tare pressure differential (APt) from the measured pressure differential (APm).
Use the following statement in catalogs and sales literature when electing to comply with this voluntary standard:”Performance data obtained and presented in accordance with SAE Recommended Practice J1117″.
A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions,not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only.SAE J1117 pdf free download.
