Hydraulic Flanged Tube, Pipe, and Hose Connections, 4-Screw Flange Connection Part 2: 42 MPa (Code 62)
J518/2_201704
This SAE Standard covers general and dimensional specifications for the Code 62 metric (type 1) and inch (type 2) flanged heads, flange clamps (FC and FCM), and split flange clamps (FCS and FCSM) applicable to four-screw flange type tube, pipe, and hose connections. Also included are the recommended port dimensions and port design considerations. Type 2 (inch) flange clamps and split flanges are not for new design.
The flanged heads specified are incorporated into fittings having suitable means for attachment of tubes, pipes, or hoses to provide connection ends. These connections are intended for application in hydraulic systems, on industrial and commercial products, where it is desired to avoid the use of threaded connections.
The rated working pressure of an assembly shall not exceed the least of all the component working pressure rated values.
THE FOLLOWING GENERAL SPECIFICATIONS SUPPLEMENT THE DIMENSIONAL DATA CONTAINED IN THE TABLES WITH RESPECT TO ALL UNSPECIFIED DETAIL. PARTS MANUFACTURED TO THIS STANDARD ARE INTERCHANGEABLE WITH ISO 6162-2 AND CONNECTORS TO EITHER STANDARD CAN BE SUPPLIED WITH THE EXCEPTION OF THE -40 AND -48 TYPE 2 CONNECTIONS THAT ARE INCLUDED IN J518-2, BUT NOT ISO 6162-2.
Rationale:
The DN 63 (-40) and DN 76 (-48) pad sizes existed for many years as special items in the field. Flange clamps were not available and the pads were used with pipe fittings. A couple of years ago, Italy proposed a clamp and supplied test data to support the design. The type 1 (metric screw) version has been approved at the ISO level. This SAE revision adds the -40 and -48 sizes and adds the inch screw sizes that have been used for years in the field. Finally, an identification groove was added to the flanged head. The groove had been approved many years ago, but never made it into the standard.
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