TORQUE SPECIFICATIONS
18
TIGHTENING O-RING FITTINGS*
1. Inspect O-ring and seat for dirt or obvious
defects.
2. On angle fittings back the lock nut off until
washer bottoms out at top of groove.
3. Hand tighten fitting until back-up washer or
washer face (if straight fitting) bottoms on face
and O-ring is seated.
4. Position angle fittings by unscrewing no more
than one turn.
5. Tighten straight fittings to torque shown.
6. Tighten angle fittings to torque shown while
holding body of fitting with a wrench.
* The torque values shown are based on
lubricated connections as in reassembly.
Torque
Value
Recommended
Turn to Tighten
(After Finger
Tightening)
Thread
Size
(in.)
Nut
Size
Across
Flats
(in.)
(N.m)
(lb-ft) (Flats)
(Turns)
3/8
7/16
1/2
9/16
3/4
7/8
1-1/16
1-3/16
1-5/16
1-5/8
1-7/8
1/2
9/16
5/8
11/16
7/8
1
1-1/4
1-3/8
1-1/2
1-7/8
2-1/8
8
12
16
24
46
62
102
122
142
190
217
6
9
12
18
34
46
75
90
105
140
160
2
2
2
2
2
1-1/2
1
1
3/4
3/4
1/2
1/3
1/3
1/3
1/3
1/3
1/4
1/6
1/6
1/8
1/8
1/12
TIGHTENING FLARE TYPE TUBE FITTINGS*
1. Check flare and flare seat for defects that might
cause leakage.
2. Align tube with fitting before tightening.
3. Lubricate connection and hand tighten swivel
nut until snug.
4. To prevent twisting the tube(s), use two
wrenches. Place one wrench on the connector
body and with the second tighten the swivel nut
to the torque shown.
* The torque values are based on lubricated
connections in reassembly.
Torque
Value
Recommended
Turn to Tighten
(After Finger
Tightening)
Thread
Size
OD
(in.)
Nut
Size
Across
Flats
(in.)
(N.m)
(lb-ft) (Flats)
(Turns)
3/16
1/4
5/16
3/8
1/2
5/8
3/4
7/8
7/16
9/16
5/8
11/16
7/8
1
1-1/4
1-3/8
8
12
16
24
46
62
102
122
6
9
12
18
34
46
75
90
1
1
1
1
1
1
3/4
3/4
1/6
1/6
1/6
1/6
1/6
1/6
1/8
1/8
