RUTHMANN 27409, Operating And Maintenance Instructions Manual

Page: 206 / 261

9 Maintenance
9-20
RUTHMANN-Steiger
®
TB270
BA.GB.12-27409-05-07-FTA-jr
9.2.5 Connection pieces and DKO-fittings
The tightening moments are valid for connection pieces and DKO-fittings
with galvanized and yellow chromalized surface protection. (Union nuts
waxed, acc. to German standards „DIN ISO 4042“).
Example:
Hold up the fitting piece by means of a screw wrench
when tightening the union nut.
Tightening moments (M
A
) for connecting pieces and DKO-fittings
Series
L = light
S = Heavy
Tube AD
(mm)
d1
Form metric
thread
d3 Span of
the jaw
M
A

5%
(Nm)
L 6 A M 12 x 1,5 14 20
L 8 A M 14 x 1,5 17 25
L 10 A M 16 x 1,5 19 35
L 12 A M 18 x 1,5 22 35
L 15 A M 22 x 1,5 27 60
L 18 B M 26 x 1.5 32 85
L 22 B M 30 x 2 36 110
L 28 B M 36 x 2 41 130
L 35 B M 45 x 2 50 215
L 42 B M 52 x 2 60 330
S 6 A M 14 x 1,5 17 25
S 8 B M 16 x 1,5 19 40
S 10 B M 18 x 1,5 22 50
S 12 B M 20 x 1,5 24 60
S 14 B M 22 x 1,5 27 75
S 16 B M 24 x 1,5 30 80
S 20 B M 30 x 2 26 120
S 25 B M 36 x 2 46 170
S 30 B M 42 x 2 50 250
S 38 B M 52 x 2 60 350