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The flange hole patterns are according to ISO 6162-1/SAE J 518 Code 61 (3000 psi/210 bar), ISO 6162-2/SAE J518 Code 62 (6000 psi/420 bar) and ISO 6164 (400 bar). Other information [ edit ]
The ASME B16 Standardization of Valves Flanges, Fittings and Gaskets Committee, which operates under ASME’s Board on Pressure Technology Codes and Standards is responsible for standards covering valves, flanges, pipe fittings, gaskets and valve actuators for use in pressure services.
IEC 60294 Measurement of the dimensions of a cylindrical component with axial terminations; IEC 60296 Fluids for electrotechnical applications – Unused mineral insulating oils for transformers and switchgear; IEC 60297 Mechanical structures for electronic equipment – Dimensions of mechanical structures of the 482,6 mm (19 in) series
Although flange fittings are bulky, they perform well in demanding applications such as large water supply networks and hydroelectric systems. Flanges are rated at 150, 300, 400, 600, 900, 1500, and 2500 psi; or 10, 15, 25, 40, 64, 100, and 150 bars of pressure. Various types of flanges are available, depending on construction.
JIC hydraulic fitting from 1967 Ford backhoe. It was badly stuck, but shows what a JIC fitting looks like. The left is the male part, the right is female. A JIC bulkhead adapter, which converts National Pipe Thread (NPT) on the left to JIC on the right. The angled seating surface is clearly visible on the far right.
The gap between the flange faces has been exaggerated by a factor of four to make it clearly visible. The choke flange can also be mated with a plain cover flange and still form a pressure seal. A choke connection is formed by mating one choke flange and one cover (or gasket/cover) flange. The central region of the choke flange face is very ...