Tightening torques for plug screw joints as per MTN 5183-6
Thread
inserted in
Steel/gray cast iron M
A
(Nm)
Al alloy M
A
(Nm)
M10 x 1 20 10+ 2
M12 x 1.5 35 14+ 2
M14 x 1.5 45 15+ 3
M16 x 1.5 55 18+ 3
M18 x 1.5 70 23+ 3
M22 x 1.5 100 33+ 4
M27 x 2 170 57+ 5
M33 x 2 310 103+ 10
M42 x 2 330 110+ 11
M48 x 2 420 140+ 14
M60 x 2
1)
200+ 20
1)
Value still to be determined.
Assembly instructions and tightening torque for hose fittings with union nuts
These instructions do not apply to ORFS valves and fittings. When connecting hose fittings with sealing
heads and the associated adapters proceed as follows contrary to the instructions for pipe unions.
Hose fitting, metallic sealing with union nut: Tighten union nut by hand then tighten max. 1/4 turn with
wrench.
Hose fitting with O-ring and union nut: Tighten union nut by hand then tighten max. 1/2 turn with
wrench.
Align hoselines appropriately before tightening the union nuts.
Sealing head/sealing cone with metric union nut
Metric thread Pipe outer Ø Torque (Nm)
M12 x 1.5 6 20
M14 x 1.5 8 38
24 | General Information | MS150119/00E 2014-08
TIM-ID: 0000002333 - 016
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