VAG Operation and Maintenance Instructions • 9
• Butterfly valves of a nominal diameter of up to
DN 1000 can be installed vertically (with gear facing
upwards or downwards) in pipelines.
• In case of valves with larger nominal diameters, a
special design of the valve must be ordered due to
the load of the disk.
vertical installation
Picture 11: Vertical installation of the VAG EKN
®
Butterfly Valve
4.2.2 Gear positions
The gear can be turned by 90° around the drive shaft.
• A:
Flow on shaft side, seat surface on the outlet side, gear on
the right
Picture 12: Possible gear positions
• B:
Flow on the side away from the shaft, seat surface on the
inlet side, gear on the left
• C:
Flow on the side away from the shaft, seat surface on the
inlet side, gear on the right
• D:
Flow on shaft side, seat surface on the outlet side, gear on
the left
