Endress+Hauser Proline Promag - 7 Appendix; 7.1 Screw Tightening Torques

Proline Promag Appendix
Endress+Hauser 33
7 Appendix
7.1 Screw tightening torques
For detailed information on the screw tightening torques, see the "Mounting the sensor"
section of the Operating Instructions for the device
Please note the following:
• The screw tightening torques listed below apply only to lubricated threads and to pipes not
subjected to tensile stress.
• Tighten the screws uniformly and in diagonally opposite sequence.
• Overtightening the screws will deform the sealing faces or damage the seals.
7.1.1 Promag D
The tightening torques apply to situations where an EPDM soft material flat seal (e.g. 70°
Shore) is used.
Screw tightening torques, mounting bolts and centering sleeves for EN 1092-1 (DIN 2501);
PN 16
Nominal diameter Mounting bolts Length
Centering sleeve
Max. screw tightening torque [Nm] for a
process flange with ...
[mm] [mm] [mm] smooth seal face Raised face
25 4 × M12 × 145 54 19 19
40 4 × M16 × 170 68 33 33
50 4 × M16 × 185 82 41 41
65
1)
4 × M16 × 200 92 44 44
65
2)
8 × M16 × 200 –
3)
29 29
80 8 × M16 × 225 116 36 36
100 8 × M16 × 260 147 40 40
1) EN (DIN) flange: 4-hole → with centering sleeves
2) EN (DIN) flange: 8-hole → without centering sleeves
3) A centering sleeve is not required. The device is centered directly via the sensor housing.
Screw tightening torques, mounting bolts and centering sleeves for ASME B16.5; Class 150
Nominal diameter Mounting bolts Length
Centering sleeve
Max. screw tightening torque [Nm]
([lbf · ft]) for a process flange with ...
[mm] [in] [in] [in] smooth seal face Raised face
25 1 4 × UNC ½" × 5,70 –
1)
19 (14) 10 (7)
40 1 ½ 4 × UNC ½" × 6,50 –
1)
29 (21) 19 (14)
50 2 4 × UNC 5/8" × 7,50 –
1)
41 (30) 37 (27)