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PIPING JOINT
Pipe Thread Connection / Union Joint Tightening
Torque Specifications
Union Joint
Metal sealing faces (4) of adapter (1) and (5) of hose
(2) fit together to seal pressure oil. Union joints are
used to join small-diameter lines.
IMPORTANT: (1) Do not over-tighten nut (3). If ex-
cessive force is applied to metal
sealing faces (4) and (5), adaptor
(1) will be cracked. Always
tighten nut (3) to specifications.
(2) Scratches or other damage to
sealing faces (4) or (5) will cause
oil to leak at the joint. Take care
not to damage the sealing faces
when
disconnecting the union joint.
Union Joint
30° Male
37° Female
NOTE: 37 ° male union joint tightening torque val-
ues are equal to those for 37 ° female union
joint.
GENERAL INFORMATION / Tightening
connecting
Wrench Size (mm)
Union Nut
Joint Body
19
22
27
36
41
50
60
70
19
22
27
36
30, 32
41
50
1
30° or 37°
or
Tightening Torque
N⋅m (kgf⋅m)
19
59 (6)
22
98 (10)
27
118 (12)
36
235 (24)
41
295 (30)
50
490 (50)
60
670 (68)
70
980 (100)
17
44 (4.5)
19
59 (6)
22
118 (12)
235 (24)
36
295 (30)
46
490 (50)
W1-2-6
4
3
30° or 37°
Male Joint
lbf⋅ft
43
72
87
134
215
360
490
720
32.5
43
87
134
125
360
5
2
Joint Body
M202-07-051
Female Joint
W105-01-01-017
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