Flowserve ZK210 - Manual (Page 5)

5
Explanatory Notes
Scope of Supply
„ Control valve ZK 210 with or without an attached actuator, according to the order
„ Installation instructions for the control valve
„ Parts list with drawing
„ Operation instructions for the actuator
„ Acceptance certificates according to the order
Description
The control valve ZK 210 is used to reduce large differential pressures. It is used mainly in
industrial plants and power stations in which ease of maintenance and high resistance to
wear are required.
The valve consists of the valve body, a yoke suitable for the various actuators, and a ZK
radial stage nozzle with valve plug integrated in the valve body to act at the control element.
Depending on requirements, the bodies are designed as straight-through (ZK210-D/..) or
angle versions (ZK210-E/..).
The control valve can be operated by means of various actuators, e.g. electric rotary
actuators, pneumatic actuators or by means of a handwheel.
Special equipment is available, such as sampling valves, a sealing-fluid connection and self-
tightening stuffing boxes.
If the operating conditions of the plant change, the K
vs
value and the characteristic curve of
the control valves can be adapted to suit the new conditions by turning of the sleeve insert of
the ZK radial stage nozzle, without having to remove the valve.
Control valve ZK 210-D/14 DN 25 with
handwheel Control valve ZK 210-E/14 DN 80 with electric
rotary actuator