Mounting; Torques And Pressures - KROHNE OPTIFLUX 6000 Quick Start Manual

OPTIFLUX 6000

2.9 Mounting

CAUTION!
Please take care to use the proper gasket to prevent damaging the liner of the flowmeter. In
general, the use of spiral wound gaskets is not advised, as it could severely damage the liner of
the flowmeter.

2.9.1 Torques and pressures

Figure 2-21: 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.
Tightening of bolts
• Always tighten the bolts uniformly 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
Nominal diameter
[mm]
INFORMATION!
Maximum torque for sizes smaller than DN25: 6 Nm
02/2019 - 4002945704 - QS OPTIFLUX 6000 R08 en
Pressure rating
25 PN 40
40 PN 40
50 PN 25
80 PN 25
100 PN 25
125 PN 10
150 PN 10
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INSTALLATION
Bolts Max. torque
4x M6
4x M8
4x M8
6x M8
6x M8
6x M10
6x M10
2
[Nm]
7
16
16
16
16
32
32
15