3 Installation PROline Promag 10
28 Endress+Hauser
Screw tightening torques (Promag P)
Note the following points:
• The tightening torques listed below are for lubricated threads only.
• Always tighten threaded fasteners uniformly and in diagonally opposite sequence.
• Overtightening the fasteners will deform the sealing faces or damage the seals.
• The tightening torques listed below apply only to pipes not subjected to tensile stress.
Promag P
nominal diameter
DIN
pressure rating
Screws Max. torque [Nm]
[mm] [bar] PTFE
25 PN 40 4 x M 12 26
32 PN 40 4 x M 16 41
40 PN 40 4 x M 16 52
50 PN 40 4 x M 16 65
65 PN 16 4 x M 16 87
80 PN 16 8 x M 16 53
100 PN 16 8 x M 16 57
125 PN 16 8 x M 16 75
150 PN 16 8 x M 20 99
200 PN 10 8 x M 20 141
250 PN 10 12 x M 20 110
300 PN 10 12 x M 20 125
Promag P
nominal diameter
ANSI
pressure rating
Screws Max. torque [Nm]
[mm] [inch] [lbs] PTFE
25 1" Class 150 4 x 1/2" 11
40 1 1/2" Class 150 4 x 1/2" 24
50 2" Class 150 4 x 5/8" 47
80 3" Class 150 4 x 5/8" 79
100 4" Class 150 8 x 5/8" 56
150 6" Class 150 8 x 3/4" 106
200 8" Class 150 8 x 3/4" 143
250 10" Class 150 12 x 7/8" 135
300 12" Class 150 12 x 7/8" 178
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