TIGHTENING OTHER FITTINGS
Ermeto Tube Fittings
Put nut and sleeve over the tube with head or
shoulder end of sleeve next to nut. Push tube into
counterbore of fitting body as far as possible. Turn
nut clockwise until sleeve holds tube and prevents
movement. Tighten the nut 1-1/4 turns more to seat
sleeve and give a locking action. When necessary to
assemble again, put sleeve over tube and tighten nut
until a sudden increase in torque is felt. Then tighten
1/6 to 1/3 turn more to seat the sleeve.
Flex Fittings
Put nut and sleeve over the tubing and push tube in
to counterbore of fitting body as far as possible.
Tighten the nut until it is against the hex part of the
fitting body.
6 of 7
45
û
FLARED AND 45
û
INVERTED FLARE FITTINGS
INVERTED
45
û
FLARED
45
û
FLARED
45
û
FLARED AND 45
û
INVERTED FLARE FITTINGS
NOMINAL TUBE O.D. STANDARD TORQUE
METRIC
3.18
4.76
6.35
7.94
9.52
11.11
12.70
15.88
19.05
22.22
INCH
.125
.188
.250
.312
.375
.438
.500
.625
.750
.875
(N
i
m)
5.0
± 1.5
8.0
± 1.5
11
± 2
17
± 3
30
± 3
30
± 3
38
± 4
50
± 5
90
± 8
100
± 10
(lb
i
ft)
4
± 1
6
± 1
8
± 1
13
± 2
22
± 2
22
± 2
28
± 3
37
± 4
65
± 6
75
± 7
THREAD
SIZE
inch
5/16
3/8
7/16
1/2
5/8
11/16
3/4
7/8
1-1/16
1-1/4
IDAS007B
IDAS008B
IDAS009B