Jordan Valve Mark ED & ET Series (8) Globe Style Control Valve - Manual

I
ntroductIon
Contained in this manual are installation instructions,
maintenance and parts information for the Mark ED and
ET Series 8-inch Globe Style Control Valves. Refer to the
appropriate manuals for instructions for the accompany-
ing actuator, positioner and additional accessories.
Only trained or experienced personnel should carry out
the operation and installation of all pressure equipment.
If you have any questions regarding the equipment, con-
tact your Jordan Valve Controls representative.
I
nstallatIon
The Mark ED and ET Series 8” valve should not be
installed in systems that exceed the ANSI specified tem-
perature and pressure ratings.
Inspect the valves for shipping damage and foreign
debris when uncrating.
1. Ensure the pipe is free of welding slag, chips,
and other debris by cleaning out the lines
before installation.
2. Install approved gaskets between the valve
body and the pipeline flanges.
3. Jordan Valve recommends a standard three-
valve maintenance bypass be installed. This
allows isolation of the valve body without shut
ting down the pipeline system.
4. Install the valve so that the flow direction arrow
on the body coincides with the actual process
flow through the valve.
5. Although the valve can be installed in any po-
sition, the typical installation has the actuator
vertical above the valve body. Support
for the actuator will be necessary if there is
vibration in the line or if the valve body is
positioned 45 degrees or more below vertical.
M
aIntenance
Before beginning any maintenance, it is important
to isolate the control valve and release all pressure
contained in the valve body and the actuator.
Disconnect any operating lines providing air
pressure, control signals or electrical power to the
actuator.
Note: Caution must be used in the disassembly.
The seating surfaces and surface finish of the
cage; seat ring, stem, and plug are critical for
proper sealing. Nicks and scratches will affect
the ability to seal the valve in the future.
Disassembly
1. Disconnect and remove the actuator from
the body.
2. Remove the nuts or cap screws from the
bonnet flange.
3. Thread one of the actuator stem locknuts
onto the stem and continue threading it
down to the bottom of the thread run out.
4. Remove the bonnet by lifting it straight up
with a hoist. Attach the hoist by either a
double cable h oisting sling under
the bonnet or by the lifting rings attached
to the packing flange stud bolts or
on the 5” yoke bosses to
two yoke stud bolts 180° apart.
5. Caution must be used when lifting the
bonnet to ensure that it clears the
body and stud bolts completely. Any
damage to the seating surface
will compromise future sealing ability
6. To prevent damage to the seating surface,
place the bonnet-valve plug assembly on
a wooden or cushioned surface.
I & M Mark ED & ET Series 8-Inch
Installation & Maintenance Instructions for the
Mark ED & ET Series 8-Inch Globe Style Control
Valve
3170 Wasson Road • Cincinnati, OH 45209
Phone 513.533.5600 • Fax 513.871.0105 (f)
[email protected] • www.jordanvalve.com
Warning: Jordan Valve Control Valves must only be used, installed and repaired in accordance with these Installa-
tion & Maintenance Instructions. Observe all applicable public and company codes and regulations. In the event
of leakage or other malfunction, call a qualified service person; continued operation may cause system failure or
a general hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized fluid. Before disassem-
bling a valve, be sure to release all spring tension.