Flowserve ZK210 - Manual (Page 10)

10
Explanatory Notes
(continued)
Material
Important
In the installation instructions, standard materials are described. For possible
deviations, please see the parts list supplied.
Body 13 CrMo 4 4 (1.7335)
Valve seat
X 90 CrMoV 18 hardened (1.4112) 3-stage
X 35 CrMo 17 hardened (1.4122) 4/5-stage
Valve plug and stem X 35 CrMo 17 (1.4122)
Corrosion Resistance
If the unit is used for the intended purpose, its safety is not impaired by corrosion.
Nominal Sizes
The control valve ZK 210 is delivered with bodies of nominal size DN 25, DN 50 and DN 80.
Different connection sizes are possible as special versions.
To determine the nominal size, the nominal size of the control valve's connection, which is
stated on the name plate, is definitive.
Connections
The control valve ZK 210 is normally delivered with butt-weld ends. Other end connections
are also available on request.
Operation
The control valve ZK 210 is suitable for the following actuators:
„
ZK 210-../01 Manual operation, not convertible to electric rotary actuators
(DN 25 to DN 50 only, otherwise ZK 210/14 with handwheel)
„ ZK 210-../13 Electric linear actuator
„ ZK 210-../14 Version with insert bush of form B1, DIN EN ISO 5210, for attaching
an electric rotary actuator or a handwheel, whichever is desired
„ ZK 210-../20 Pneumatic diaphragm-actuator
„ ZK 210-../40 Hydraulic cylinder