44
O-ring Flare Fitting Tightening Torque
*
**
***
Wrench Size
Tubeline Outside
Diameter
Thread Size
TORQUE N·m (ft-
lb)
NEW Rotate No.
of Hex Flats
RE-ASSEMBLY
Rotate No. of Hex
Flats
5/8”
5/16”
1/2” – 20
23 (17)
2 - 1/2
1
11/16”
3/8”
9/16” – 18
30 (22)
2
1
7/8”
1/2”
3/4” – 16
54 (40)
2
1
1”
5/8”
7/8” – 14
81 (60)
1 - 1/2
1
1 - 1/4”
3/4”
1 - 1/16” – 12
114 (84)
1
3/4
1 - 3/8”
1”
1 - 5/16” – 12
160 (118)
3/4
3/4
*
If a torque wrench is used to tighten a new fitting to a used hose / tubeline.
**
If using the hex flat tightening method to tighten a new fitting to a new hose / tubeline.
*** If using the hex flat tightening method to tighten a used fitting to a new hose / tubeline.
NOTE:
O-ring flare fittings are not recommended in all
applications. Use the standard flare fittings in
these applications.
Do not use an O-ring flare fitting when a copper bonnet
orifice is used. When tightened the connection at the
bonnet may distort the flare face and prevent it from
sealing.
Figure 66
P13572a
Use a standard flare fitting (Item 1) [Figure 66] as shown.
Figure 67
P13573a
When an O-ring flare fitting is used as a straight thread
port adapter the O-ring flare face is not used to seal. The
O-ring may come off the fitting and enter the system.
Always remove the O-ring (Item 1) [Figure 67] from the
flare face as shown.
An O-ring (Item 2) [Figure 67] is added to the flat boss of
the fitting to seal the connection in this application.
Summary of Contents for Auger 75 DDH
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Page 12: ...10 Figure 4 C221899a SAFETY AND TRAINING RESOURCES ...
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Page 52: ...50 troubleshooting 29 W warranty 48 welding safety 7 ALPHABETICAL INDEX ...
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