25
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 on wrench on
the connector body and with the
second tighten the swivel nut to the
torque shown.
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 the fitting until back-up
washer or washer face (if straight
fitting) bottoms on face and O-ring is
seated.
4.
Position angle fitting by unscrewing no
more than one turn.
5.
Tighten straight fittings to torque
shown.
6.
Tighten while holding body of fitting
with a wrench.
Tube
Size OD
Nut
Size
Across
Flats
Torque
Value*
Recommended
Turns to
Tighten
(After Finger
Tightening)
(in.)
(in.)
(N.m) (lb-ft)
(N.m)
(lb-ft)
3/16
7/16
8
6
1
1/6
1/4
9/16
12
9
1
1/6
5/16
5/8
16
12
1
1/6
3/8
11/16
24
18
1
1/6
1/2
7/8
46
34
1
1/6
5/8
1
62
46
1
1/6
3/4
1-1/4
102
75
3/4
1/8
7/8
1-3/8
122
90
3/4
1/8
*The torque values shown are based on lubricated
connections as in reassembly.
Tube
Size OD
Nut
Size
Across
Flats
Torque
Value*
Recommended
Turns to
Tighten
(After Finger
Tightening)
(in.)
(in.)
(N.m) (lb-ft)
(N.m)
(lb-ft)
3/8
1/2
8
6
2
1/3
7/16
9/16
12
9
2
1/3
1/2
5/8
16
12
2
1/3
9/16
11/16
24
18
2
1/3
3/4
7/8
46
34
2
1/3
7/8
1
62
46
1-1/2
1/4
1-1/16
1-1/4
102
75
1
1/6
1-3/16
1-3/8
122
90
1
1/6
1-5/16
1-1/2
142
105
3/4
1/8
1-5/8
1-7/8
190
140
3/4
1/8
1-7/8
2-1/8
217
160
1/2
1/12
*The torque values shown are based on lubricated
connections as in reassembly.
Summary of Contents for FuelCube FCP1000
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