Mounting Cladded Flanges - Endress+Hauser Levelflex FMP51 Operating Instructions Manual

Levelflex FMP51, FMP52, FMP54 FOUNDATION Fieldbus
Endress+Hauser
6.1.5

Mounting cladded flanges

For cladded flanges of FMP52, observe the following:
• Use flange screws according to the number of flange holes.
• Tighten the screws with the required torque (see table).
• Retighten the screws after 24 hours or after the first temperature cycle.
• Depending on process pressure and process temperature check and retighten the
screws at regular intervals.
Usually, the PTFE flange cladding also serves as a seal between the nozzle and the
device flange.
Flange size
EN
DN40/PN40
DN50/PN16
DN50/PN40
DN80/PN16
DN80/PN40
DN100/PN16
DN100/PN40
DN150/PN16
DN150/PN40
ASME
1½"/150lbs
1½"/300lbs
2"/150lbs
2"/300lbs
3"/150lbs
3"/300lbs
4"/150lbs
4"/300lbs
6"/150lbs
6"/300lbs
JIS
10K 40A
10K 50A
10K 80A
10K 100A
10K 100A
Number of screws
4
4
4
8
8
8
8
8
8
4
4
4
8
4
8
8
8
8
12
4
4
8
8
8
Recommended torque [Nm]
minimum maximum
35 55
45 65
45 65
40 55
40 55
40 60
55 80
75 115
95 145
20 30
30 40
40 55
20 30
65 95
40 55
45 70
55 80
85 125
60 90
30 45
40 60
25 35
35 55
75 115
Mounting
33