TECHNICAL DATA
8
79
H250
www.krohne.com
04/2009 - 4000269302 MA H250-R02
Bolts and tightening torques
For flowmeters with PTFE liner or ceramic liner and PTFE raised face, tighten the flange threads
with the following torques:
Nominal sizes EN
Nominal size ASME
Nominal size
Bolts
Tightening torques
acc. to EN 1092-1
Quantity x size
[Nm]
[lb-ft]
DN15 PN40
1
4 x M 12
9.8
7.1
DN25 PN40
2
4 x M 12
21
15
DN50 PN40
2
4x M16
57
41
DN80 PN16
2
8x M16
47
34
DN100 PN16
2
8x M16
67
48
1
standard connections; other connection on request
2
standard connections; other connections on request
Nominal size
Bolts (Quantity x size)
Tightening torques
acc. to ASME B 16.5
150 lbs
300 lbs
[Nm]
[lb-ft]
½
" 150 lbs / 300 lbs
1
4x
½
"
4x
½
"
5.2
3.8
1" 150 lbs / 300 lbs
1
4x
½
"
4x 5/8"
10
7.2
2" 150 lbs / 300 lbs
1
4x 5/8"
8x 5/8"
41
30
3" 150 lbs / 300 lbs
1
4x 5/8"
8x
¾
"
70
51
4" 150 lbs / 300 lbs
1
8x 5/8"
8x
¾
"
50
36
1
standard connections; other connections on request
MA_H250_R02_en_PRT.book Page 79 Tuesday, September 22, 2009 12:26 PM
