6 INSTALLATION
Revision status: 03/05/2022 13 Index number: D0-116
Hoist for moving large valves
Lifting equipment may only be used by the personnel
instructed in it.
The appropriate sling must be used for the valve.
The lifting capacity of the hoist and sling must be
designed for at least the total weight of the valve.
Ensure that there are no persons under suspended
load.
6.2 Installation instruction
When installing the valve, the following steps must be followed:
Place one washer on each of the flange screws.
Insert two flange screws through the lower flange holes; these can serve as a
support in the installation position with horizontal flow. From the other side, place one
washer and then one nut und the flange screw and tighten them lightly.
Insert the valve between flanges and sealing and place it on the two flange screws.
For large valves that can no longer be moved manually, use a hoist.
Insert a suitable flange joint sealing between the flange and the valve; these are to
be centered with the valve between the flanges.
Insert remaining flange screws into the flange holes.
Place one washer and then one nut on each flange screw and tighten them lightly.
Then center the valve including flange joint sealing between the flanges. The valve is
centered by the flange screws and the respective shape of the valve.
Tighten the flange screws crosswise with the appropriate tightening torque (for guide
values, see table: Tightening torques of the flange connection).
Instructions for installing the valve
The system must be clean and free of contaminants at
the point of installation (flanges). Special attention must
be paid to the sealing surfaces.
It must be ensured that a calming distance of 5 x DN
(see 6.2 Installation instruction; calming distance) is
available before and after the valve.
Do not install directly on the pump flange.
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