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SERIES: KM-O(ST) & KM-T(ST)
Operating and maintenance instructions
3. INSTALLATION INTO THE PIPE
Accurate piping is of utmost importance. Stresses and
displacements in the pipe system can result in an increased
torque and leakage between valve body and connection
ends. The distance between the pipe ends should correspond
precisely to the dimensions of the ball valve.
3.1 NOTES
The installation of ball valves into a pipe is subject to the same
instructions as the flange connection of pipes and similar pipe
elements. In addition, the following instructions apply to ball
valves. For transport to place of installation, section 2.5 shall
also be observed.
WARNINGS AND NOTES
If retrofitting an actuator unit on site, ensure that the
torque, direction of rotation, angle of activation and
the setting of the end stops "OPEN" and CLOSED" are
adapted to the ball valve. It is of particular importance that
retrofitted connection parts (bracket and adapter) are
precisely aligned with the ball valve shaft, thus ensuring a
plane-parallel mounting of the actuator to the ball valve.
Failure to observe this precaution may present a danger
to the user and cause damage to the pipe system or ball
valve.
An actuator supplied together with the ball valve is
adjusted to the operating data indicated in the order.
The setting of the end stops "OPEN" and "CLOSED"
shall not be changed without the permission of the
manufacturer.
Applies only to ball valves with electric actuator:
Make sure that actuator in end positions is switched off
by thesignal of the limit switch. If switch-off takes place
via the signal of the torque switch, then this signal shall
also be used as failure signal. The fault must be eliminated
as quickly as possible, see section 4.2 (Troubleshooting)
For additional notes see instructions for the electric
actuator
Closing/opening times for pneumatic piston actuators:
Adapt compressed air supply/decompression to the
valve in such a way that - unless otherwise specified -
the closing time of a ball valve equals the guide value:
t [sec] = DN [mm] / 25.
FOR ACTUATORS, OBSERVE THE FOLLOWING:
WARNINGS AND NOTES
For actuators, observe the following:
Do not use valve (and actuator) as "ladder" - Do not
apply external loads to valve (and actuator); this may
damage or destroy the ball valve.
Actuators whose weight exceeds the weight of the ball
valve: They shall be supported if the weight and/or
actuator position result in a permanent deformation of
the valve body.
Risk of crushing hand or fingers:
Do not operate an actuated valve as long as the valve is
not yet installed. Do not operate a valve installed at the
open end of a pipe section.
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