Flowserve ZK 313 ASME - Manual (Page 18)

18
Pickling and rinsing
The pipe system of a new installation usually has to be pickled and rinsed before it can be
commissioned in order to remove dirt and foreign matter accumulated during the mounting
procedure.
Note that the nozzle inserts of ZK 313 ASME valves must be removed and the valve bodies have to be
provided with blind flanges before pipes where control valves ZK 313 ASME are installed can be
pickled and rinsed.
Please contact the manufacturer or your local dealer if you want to pickle and rinse your installation.
Attention
■ The nozzle inserts of the ZK 313 ASME must be removed before pickling and rinsing
the system. The valve bodies must be closed off with suitable blind flanges.
■ Installation and deinstallation works must only be performed by the manufacturer or
by qualified personnel authorised by the manufacturer.
Installation
– continued –
Retighten the stuffing box H if leaking occurs.
ZK 313 ASME
Commissioning
Attention
■ As the stuffing box screw is tightened, the break-away force and the friction force of
the valve spindle are increased.
■ The break-away force and the friction force of the valve spindle must not exceed the
maximum operating force of the actuator.
■ Excessive tightening of the stuffing box screw impairs the function of the actuator and
may cause blocking of the valve spindle.
If the valve spindle is blocked, the valve can no longer open, regulate or close.