KROHNE OPTIFLUX 7300 EN - Manual (Page 16)

3
INSTALLATION
16
OPTIFLUX 7300
www.krohne.com 01/2011 - 4001163301 - MA OPTIFLUX 7300 R01 en
3.5 Mounting
3.5.1 Torques and pressures sandwich versions
Max. torque:
• Step 1: approx. 50% of max. torque
• Step 2: approx. 80% of max. torque
• Step 3: 100% of max. torque given in tables
EN 1092-1
ASME B 16.5
WARNING!
• Use stainless steel A2 / 6.9 class bolts.
• Make sure the connecting flanges are of type raised face (RF).
Figure 3-15: Tighten the bolts in fixed order, see picture.
Nominal size
DN [mm]
Pressure rating Max. allowable operating pressure
[bar]
25...80 PN 40 40
100 PN 16 16
100 PN 25 25
Nominal size
[inch]
Pressure rating Max. allowable operating pressure
[psig]
1...4" 150 lb 230
1...3" 300 lb 580