Levelflex FMP55 HART
Mounting
Hauser
25
6.1.4
Mounting cladded flanges
• 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
Number of screws
Recommended torque [Nm]
minimum
maximum
EN
DN40/PN40
4
35
55
DN50/PN16
4
45
65
DN50/PN40
4
45
65
DN80/PN16
8
40
55
DN80/PN40
8
40
55
DN100/PN16
8
40
60
DN100/PN40
8
55
80
DN150/PN16
8
75
115
DN150/PN40
8
95
145
ASME
1½"/150lbs
4
20
30
1½"/300lbs
4
30
40
2"/150lbs
4
40
55
2"/300lbs
8
20
30
3"/150lbs
4
65
95
3"/300lbs
8
40
55
4"/150lbs
8
45
70
4"/300lbs
8
55
80
6"/150lbs
8
85
125
6"/300lbs
12
60
90
JIS
10K 40A
4
30
45
10K 50A
4
40
60
10K 80A
8
25
35
10K 100A
8
35
55
10K 100A
8
75
115