RUTHMANN 27409, Operating And Maintenance Instructions Manual

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9 Maintenance
BA.GB.12-27409-05-07-FTA-jr
RUTHMANN-Steiger
®
TB270
9-21
9.2.6 Screwed end of fittings
In the following table the tightening moments for screwed ends are indicat-
ed (acc. to German standards DIN 3852, Form E).
Example:
Tightening moments (M
A
) for screwed ends of fittings
Series
L =light
metric
thread
M
A

5%
(Nm)
Withworth
pipe
M
A

5%
(Nm)
S = heavy
Steel/Cast Al
thread
Steel/Cast Al
L 6 M 10 x 1 20 13 G 1/8 A 20 13
L 8 M 12 x 1,5 30 30 G 1/4 A 40 35
L 10 M 14 x 1,5 45 40 G 1/4 A 40 35
L 12 M 16 x 1,5 60 50 G 3/8 A 80 55
L 15 M 18 x 1,5 80 65 G 1/2 A 110 95
L 18 M 22 x 1,5 130 110 G 1/2 A 100 95
L 22 M 26 x 1,5 190 180 G 3/4 A 180 170
L 28 M 33 x 2 300 300 G 1 A 300 300
L 35 M 42 x 2 600 400 G 1 1/4 A 600 400
L 42 M 48 x 2 800 600 G 1 1/2 A 800 600
S 6 M 12 x 1,5 40 30 G 1/4 A 50 35
S 8 M 14 x 1,5 60 40 G 1/4 A 50 35
S 10 M 16 x 1,5 80 50 G 3/8 A 90 55
S 12 M 18 x 1,5 110 65 G 3/8 A 90 55
S 14 M 20 x 1,5 140 90 G 1/2 A 160 95
S 16 M 22 x 1,5 170 110 G 1/2 A 140 95
S 20 M 27 x 2 250 180 G 3/4 A 250 170
S 25 M 33 x 2 450 300 G 1 A 400 300
S 30 M 42 x 2 600 400 G 1 1/4 A 600 400
S 38 M 48 x 2 800 600 G 1 1/2 A 800 600