Samson 3347 - Appendix; Tightening Torques, Lubricants and Tools

EB 8097 EN 15-1
Appendix
Tools
Apart from the standard tool, no special
tools are required for this valve model to as-
semble and remove parts.
15 Appendix
15.1 Tightening torques, lubricants and tools
Table15-1: Tightening sequence
With 4 bolts With 8 bolts With 12 bolts
1
2
3
4
5
6
8
7
1
3
4
2
1
2
3
4
5
6
7
8
9
10
11
12
Î Tighten radial pressure-retaining bolting gradually in a crisscross pattern. Apply the tar-
get torque over several rounds.
Tightening torques
Table15-2: Tightening torques for connection of valve body and bolted bonnet
Nominal size
Tightening torque for bolts (34.2) in Nm
DN NPS
6 to 25
(micro-ow valve)
¼ to 1
(micro-ow valve)
7
15 to 40 ½ to 1 ½ 30
50 2 50
65 to 100 2 ½ to 4 100