Operation instructions Butterfly Check Valve Series TRI-CHECK, with
counter weight and optional hydraulic damper
ZWICK Armaturen GmbH D-58256 Ennepetal
Instructions No.
Zw-Tri-Check-2016 / Rev.11
5
3
Transport and Storage
⇒
The valve shall be handled, shipped and stored with care.
⇒
The valve shall be stored in the protective packaging or caps at the flanged or butt weld ends.
Store and transport it at a pallet or similar even to the place of installation.
⇒
If the valve shall be stored before installation, store it in a closed building and protect the valve
from harsh environmental conditions, such as dirt, debris and humidity.
⇒
Take special care to protect the metallic seat, the flange or butt weld end faces and the
damper from damage at transport.
⇒
Valves must be stored in the same condition as they are delivered. The counter weight and the
damper (if applicable) must not be operated or removed. The counter weight / the valve disc
must remain fixed. The valve may not be able to swing until it has been installed.
Danger
Valves supplied without damper:
The valve must be moved with special care: The unsecured disc could remove itself
from the closed position without extraneous cause (e.g. concussions)
Mortal
Danger
Valves of large diameters:
The disc of large diameter valves can weight several tons. The removal of the fixation
can cause the disc to swing out of the closed position. This can lead to heavy injuries
and/or create forces strong enough to knock over for, for example, a fork lift. The
transport of such valve is only allowed with the interlocking immovably in place
and the disc in the closed position!