Flowserve ZK210 - Manual (Page 13)

13
Operating Procedure
(continued)
Installation
(continued)
Important
Attention must be paid to the direction of flow. It is indicated by an arrow on the
body.
Basically, the valve can be installed with any orientation. As viewed in the direction of flow,
the normal installation orientation of the control valve is horizontal with the spindle vertical
and the stuffing box pointing upwards.
In the case of angle valves, flow normally takes place over the valve plug.
In the case of units with actuators, the installation rules issued by the actuator manufacturers
must be observed.
Commissioning
The task of commissioning the control valve is performed when the valve is put into operation
for the first time, and also after repairs.
Commissioning may only be carried out by qualified staff who have read and understood the
installation instructions.
For the actuators, the additional documents issued by the manufacturers must be observed.
Before commissioning, a check must be performed to ensure that all fastenings have been
securely tightened.
Commissioning does not require any additional work on the valve.
Unless agreed otherwise, the control valve is delivered in the closed state. The travel
distance of the valve plug is stated on the name plate.
During the task of commissioning, all connections and seals on the valve must be checked for
leaks. Any leaks must be corrected immediately. In the case of flanged connections, this is
done by tightening the nuts; it can also be done on the valve by tightening the stuffing box if
necessary.
In the case of pipes at high temperatures, the valves should not be suddenly exposed to the
high temperatures. Here, slow warming-up should be performed.