KROHNE H250 M8-M9-M10 EN - Manual (Page 79)

TECHNICAL DATA
8
79
H250
www.krohne.com 04/2011 - 4000269302 MA H250-R02 en
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
Low pressure resistance (vacuum) H250/C
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 1 4 x M 12 21 15
DN50 PN40 1 4x M16 57 41
DN80 PN16 1 8x M16 47 34
DN100 PN16 1 8x M16 67 48
1 standard connections; other connection on request
Nominal size Bolts (Quantity x size) Tightening torques
acc. to ASME B 16.5 150 lb 300 lb [Nm] [lb-ft]
½ " 150 lb / 300 lb 1 4x ½" 4x ½" 5.2 3.8
1" 150 lb / 300 lb 1 4x ½" 4x 5/8" 10 7.2
2" 150 lb / 300 lb 1 4x 5/8" 8x 5/8" 41 30
3" 150 lb / 300 lb 1 4x 5/8" 8x ¾" 70 51
4" 150 lb / 300 lb 1 8x 5/8" 8x ¾" 50 36
1 standard connections; other connections on request
Max. process temperature +70°C (+158°F) +150°C (*302°F) +250°C (+482°F)
Min. operating pressure
Nominal size float lining [mbar
abs.]
[psia] [mbar
abs.]
[psia] [mbar
abs.]
[psia]
DN15...DN100 PTFE PTFE 100 1,45 - - - -
DN15...DN80 ceramic PTFE 100 1,45 250 3,63 - -
DN15...DN80 ceramic TFM /
ceramic
100 1,45 100 1,45 100 1,45
MA_H250_R02_en_269302_PRT.book Page 79 Tuesday, April 12, 2011 10:17 AM