2 tightening torques, Tightening torques, Series psg/f, tsg/f – Richter TSG/F Series Sight Glasses User Manual
Page 4
Series PSG/F, TSG/F
Page 4
9540-050-en
Revision 02
TM 7476
Edition 03/2009
1.2 Tightening torques
All screws greased, tighten in diametrically
opposite sequence!
The tightening torques for pipe screws and body
screws mentioned must not be exceeded. For an
exception, see Section 8, Flange connection valve /
pipe is leaking.
The following tightening torques are recommended.
Pipe screws, flanges to ISO/DIN
Flange nom.
size
Screws
Tightening
torque
[mm]
[ISO/DIN]
[Nm]
25
4 x M12
10
40
4 x M16
20
50
4 x M16
26
65
4 x M16
40
80
8 x M16
25
100
8 x M16
35
150
8 x M20
45
200
12 x M20
100
Pipe screws, flanges to ASME Class 150 or flanges
ISO/DIN drilled to ASME Class 150
Flange nom.
size
Screws
Tightening
torque
[mm] [inch]
[ASME]
[Nm]
[in-lbs]
25
1"
4 x ½“
8
70
40
1½"
4 x ½“
15
135
50
2"
4 x I“
25
220
65
2½"
4 x I““
30
265
80
3"
4 x I“
45
400
100 4"
8 x I“
35
310
150 6"
8 x ¾“
80
710
200 8"
8 x ¾“
115 1020
Cover screws Seal in the direct power connection
See Fig. 1
Nom. size
Screws
Tightening torque
[mm]
[inch]
[ISO/DIN]
[Nm]
[in-lbs]
25
1"
8 x M12
30
265
40
1½"
8 x M16
50
443
50
2"
8 x M16
50
443
65
2½"
8 x M16
50
443
80
3"
16 x M16
50
443
100
4"
16 x M16
50
443
150
6"
16 x M16
50
443
200
8"
16 x M16
50
443
…
Fig. 1
Option :
Cover screws Seal in the bypass connection
See Fig. 2
Nom. size
Screws
Tightening torque
[mm]
[inch]
[ISO/DIN]
[Nm]
[in-lbs]
25
1"
8 x M12
30
443
40
1½"
8 x M16
50
708
50
2"
8 x M16
50
708
65
2½"
8 x M16
50
708
80
3"
16 x M16
50
708
100
4"
16 x M16
50
443
150
6"
16 x M16
50
443
200
8"
16 x M16
50
443
Fig. 2