Data Sheet

Control-Disk Valve
D103297X012
Product Bulletin
51.3:Control-Disk
July 2012
2
 Lower Operating Torques– The equal percentage
disk reduces operating torque at peak angles of disk
opening.
 Spline-ended Shaft– The splined shaft with clamped
lever and single-pivot linkage reduces lost motion
between the actuator and the valve shaft.
 Improved shaft-disk pinning– The improved
expansion pin system ensures there is a positive,
durable connection between disk and shaft. This
connection reduces backlash and wear in the drive
system, optimizing long-term performance. It also
makes disassembly for maintenance quick and
simple with no need for special tools.
 New Spring-Loaded Shaft– The spring in the
outboard shaft provides support to the drive train
and disk, enabling the shaft to be installed in both
horizontal and vertical orientations with no
detriment to performance or cycle life. This
complements the ability t o mount the actuator on
the left- or right-hand side, enabling access for any
installation.
 Excellent Emissions Capabilities– The optional
ENVIRO-SEALt packing systems, are designed with
very smooth shaft surfaces and live-loading to
provide improved sealing, guiding, and l oading
force transmission. The seal of the ENVIRO-SEAL
system can control emissions to below 100 ppm
(parts per million).
 Sour Service Capability– Trim and bolting materials
are available for applications involving sour liquids
and gases. These constructions comply with NACE
MR0175-2002, MR0103, and MR0175 / ISO 15156.
 Field-Reversible Valve Action– The actuator/valve
assembly action can be converted from
push-down-to-open to push-down-to-close, or vice
versa, without additional parts.
 Easy Installation– Line-centering clips engage the
line flange bolts to simplify installation and provide
for centering of wafer-style valves in the pipeline.
End connections are compatible with EN and ASME
standards.
 Excellent Shutoff– Both the metal and soft seal
rings have pressure-assisting sealing action that
ensures tight shutoff regardless of pressure drop.
 Long Seal Life– The opening and closing path of the
eccentric disk minimizes disk contact with the seal
ring, thereby reducing seal wear, undue friction,
and seating torque requirements. See figure 2.
 Reliable Flange Gasketing Surface– The seal
retainer screws and retention clips are outside the
gasket surface of the seal retainer. Spiral-wound or
flat-sheet gaskets can be installed between the
uninterrupted seal retainer face and the pipeline
flange.
 Integral Shaft-to-Valve Body Bonding– Standard
valve construction includes conductive packing to
provide electrical bonding for hazardous area
applications.
 Powder paint as standard– The Emerson Process
Managementt powder paint finish offers an
excellent corrosion-resistant finish to all steel parts.
 High Temperature Capability– The valve will
operate at elevated temperatures, with the
appropriate trim components.
 Shaft Retention– Redundant shaft retention
provides added protection. The packing follower,
anti-blowout ring, and shaft groove interact to hold
the shaft securely in the valve body (see figure 1).
 Travel Indication– Additional travel indication can
be achieved by using the indication line on the
shaft, along with the disk position markings on the
packing follower (see figure 4).
Table of Contents
Control-Disk Valve Features 1....................
Control-Disk Valve Specifications and Materials
of Construction 3............................
2052 Actuator Specifications and Materials
of Construction 15...........................
2052 Actuator Features 18.......................