KROHNE OPTIFLUX 6000 EN - Manual (Page 18)

3
INSTALLATION
18
OPTIFLUX 6000
www.krohne.com 11/2013 - 4001723703 - HB OPTIFLUX 6000 R03 en
3.7 Mounting
3.7.1 Torques and pressures
Tightening of bolts
• Always tighten the bolts uniformely and in diagonally opposite sequence.
• Do not exceed the maximum torque value.
• Step 1: Apply approx. 50% of max. torque given in table.
• Step 2: Apply approx. 80% of max. torque given in table.
• Step 3: Apply 100% of max. torque given in table.
Maximum torque for 11864-2A flange version
Figure 3-17: Tightening of bolts
CAUTION!
The max. allowable torque depends on the gasket material, see datasheet for detailed
information.
Bolts to be used from material SS, class 70-A2.
Nominal diameter
[mm]
Pressure rating Bolts Max. torque
[Nm]
25 PN 40 4x M6 7
40 PN 40 4x M8 16
50 PN 25 4x M8 16
80 PN 25 6x M8 16
100 PN 25 6x M8 16
125 PN 10 6x M10 32
150 PN 10 6x M10 32