RUTHMANN Steiger TB270 - Page 207

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