GENERAL TORQUE VALUES - Continued
Inch Series Four Bolt Flange Fitting For High-Pressure Service - Continued
Table 22. Inch Series Four Bolt Flange Fitting for High-Pressure Service Torque Values - Continued.
Min - Max Torque
Cap Screw Size a - inch
Nominal Flange Size - inch
JDM A17D, SAE Grade 5 or better cap screws with plated hardware. Lockwashers are permissible but not
Minimum torques given are enough for the given size connection with the recommended working pressure.
Torques can be increased to the maximum shown for each cap screw size if desired. Increasing cap screw
torque beyond the maximum will result in flange and cap screw bending and connection failures.
Inch series four bolt flange fitting for above 6,000 psi (41,400 kPa) (414 bar), pressure series torque values.
Tolerance is ±10%, unless otherwise specified.
Non-Restricted Banjo (Adjustable) Fittings Service Recommendations
The L in the Tube Fitting OD Size column indicates "light" designed fitting and the S indicates
"heavy" designed fitting.
Inspect all fitting sealing surfaces. They must be free of dirt and defects.
Inspect O-ring (Figure 24, Item 1). It must be free of damage or defects.
Inspect sealing ring (Figure 24, Item 2) for damage or defects.
Hold body in desired position while tightening stud by hand.
Tighten stud (Figure 24, Item 3) to torque value shown on the table. Do not allow body to twist when tightening
Table 23 lists the Non-Restricted Banjo (Adjustable) Metric Fittings Torque Values.
Figure 24. Non-Restricted Banjo (Adjustable) Fittings.