Jordan Valve Mark ED User Manual

I & M Mark ED & ET Series 8-Inch

3170 Wasson Road • Cincinnati, OH 45209
Phone [phone] • Fax [phone] (f)
[e-mail] • www.jordanvalve.com

Installation & Maintenance Instructions for the

Mark ED & ET Series 8-Inch Globe Style Control

Valve

Warning: Jordan Valve Control Valves must only be used, installed and repaired in accordance with these Installa­tion & 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 disassem­bling a valve, be sure to release all spring tension.

IntroductIon

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 accompany­ing 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, con­tact your Jordan Valve Controls representative.

MaIntenance

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 nish 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.

InstallatIon

The Mark ED and ET Series 8” valve should not be
installed in systems that exceed the ANSI specified tem­perature 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.

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 hoisting 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.

Mark ED anD ET SEriES 8-inch GlobE STylE conTrol ValVES

Replacing the Plug Stem or Load Ring

1. Unscrew the locknuts from the stem.

2. Loosen the packing flange nuts.

3. Lean the bonnet over.

4. Draw the plug and stem out of the bonnet.

5. If valve plug is damaged it will be necessary
to replace both the valve plug and stem. If the
stem is damaged, a new valve stem can
be inserted in the original valve plug.

Replacing the Stem

1. Remove the old groove pin

2. Remove the old stem, and replace with new
stem.

3. Tighten the new stem until the thread bottoms
out against the plug.

4. Drill through the stem using the hole in the valve
plug as guide. Remove any chips or burrs and
drive in a new groove pin to lock the assembly.
Refer to Table 1 for groove pin drill sizes.

Valve Stem

Connection (VSC)

Inches mm Lbf•Ft N•m Inches

3/4 19.1 237-339 175-250 3/16

1 25.4 420-481 310-355 1/4

Table 1: Stem Torque and Groove Pin Drill Sizes

Torque

Min/Max Values

Groove

Pin Drill

Size

Assembly

1. Ensure all gasket surfaces are clean.

2. Replace the valve plug piston ring or seal
ring with a new ring.

3. Assembly for design:

3.1. Mark "ED” Design Bodies:
For valve bodies using a carbon filled
TFE piston ring, at the split, slightly
spread the ring and install it over
the stem and into the piston ring
groove on the valve plug.

Graphite piston rings are supplied
as a complete ring and must be
broken into two sections. The piston
ring can be broken in half by scoring,
and then breaking over a hard
surface i.e.) edge of a table. Ensure
the broken ends are
re-matched when the
piston ring is installed in the piston
ring groove.

Figure 1: Groove Pin Pilot Holes

3.2. Mark "ET” Design Bodies:
Apply a lubricant to both back-up
ring and seal rings. Install the back­ up ring over the stem and
into the piston ring groove. Place
the seal ring over the top edge of the
valve plug, so that it slips into
the groove on one
side of the valve plug.

Cautiously stretch the seal ring to
work it over the top edge of
the valve plug. Avoid jerking sharply
on the seal, as the TFE in the seal
ring needs time to cold flow during
the stretching procedure. This
stretching procedure may make the
seal ring seem loose
in the groove, however it will contract
to its original size after installation of
the cage.

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Mark ED anD ET SEriES 8-inch GlobE STylE conTrol ValVES

Assembly Continued,

4. Replace the seat ring gasket, and install the seat
ring. If using a composition seat (TFE),
assemble it by placing the TFE disc onto
the disc retainer and then sliding this assembly
over the disc seat.

5. Place the cage onto the seat ring. Any rotational
orientation of the cage with respect to the valve
body is acceptable.

6. To ensure a good seal, clean all sealing surfaces
and examine surfaces for nicks and scratches.
Place the bonnet gasket in position.

7. Slide the valve plug assembly in the cage, and
then position the load ring on top of the cage.

8. Place the bonnet on the body ensuring that the
pipe plug (or lubricator) is on the downstream
side of the body.

9. Using good bolting practices, bolt the bonnet
to the body. Lubricate the studs and nuts us
ing good quality lubrication.
Tighten the bolts alternately.
Correct tightening of the bonnet bolts
accomplishes two objectives.

Packing Lubrication

The use of semi-metallic packing requires the use of a
lubricator or lubricator/isolating valve (Figure 2). The
lubricator or lubricator/isolating valve is mounted in
place of pipe plug (Figure 2, Key 15). For standard
service up to 450ºF, use Dow Corning lubricant or
equivalent. Do not lubricate packing used in oxygen
service.

Lubricator -To add lubricant to the packing box, turn
the cap screw in a clockwise direction.

Lubricator/Isolating Valve - Open the isolating valve,
turn the cap screw in a clockwise direction, and then
close the isolating valve.

9.1. To compress the bonnet gasket to form
a seal with the body joint.

9.2. Bolt loads are transmitted to the cage
through the load ring, which creates a
sealing load for the seat ring gasket.

10. Mount the actuator to the bonnet and make up
the stem connection. Refer to “Making Up the
Stem Connection” for proper procedure.

Figure 2: Lubricator and Lubricator/
Isolating Valve

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Mark ED anD ET SEriES 8-inch GlobE STylE conTrol ValVES

Replacing TFE V-Ring Packing

1. After the stem and valve plug have been
detached from the bonnet, the following parts
can be removed:

1.1. Packing nuts

1.2. Packing flange

1.3. Wiper ring

1.4. Packing follower

2. The old packing can be removed by one of two
methods:

2.1. Remove the packing by pushing it out
using a rod inserted through bottom of
the bonnet.

2.2. Use a packing hook to remove the
packing. Note: To avoid damaging the
packing box walls use caution.

3. Clean the packing box bore, and all metal
parts. Complete all required maintenance.

4. Slide the valve plug into the cage already in
the valve body, install the load ring on the
cage, and use a new bonnet gasket. Mount
the bonnet to the valve body.

5. Complete the installation of the packing as il­ lustrated in Figure 3.

Note: Extra caution should be taken not to damage
the packing during the installation process.

6. Replace the packing flange (Key 27); tighten
the packing flange nuts (Key 29) until shoulder
of packing follower (Key 30) is approximately
5/8” from the top of the bonnet. If leakage is
detected around the packing follower, tighten
the packing flange nuts until leakage stops.

7. For graphite packing, tighten the packing
flange nuts to the maximum torque value in
Table 3. Then back off the nuts and retighten
them to the minimum torque value in Table 3.

8. For other Packing Types, in small equal incre­ ments tighten the flange nuts until one of the
nuts reach the minimum torque shown in Table

3. Then tighten the other nut until the packing
flange is level.

9. Mount the actuator and set the stem connector
to the required travel. Refer to “Making Up the
Stem Connection” procedure.

Lapping Metal Seats

In any valve body, a certain amount of leakage should
be expected with metal-to-metal seating. However, if
the leakage becomes excessive, lapping can enhance
the condition of the seating surfaces of the valve plug
and seat ring.

Deep nicks in the seating surfaces should be removed
by machining rather than lapping. There are many lap­ping compounds available commercially. Be sure to
use one of high quality.

Apply lapping compound to bottom of plug. In order
to position the cage and seat ring properly and to help
align the valve plug with the seat ring, bolt the bon­net to the body with gaskets (the old gaskets can be
used) in place during the lapping procedure. A simple
handle can be made from a piece of metal secured to
the valve stem with nuts.

Rotate the handle in opposite directions to lap the seat­ing surfaces. Once lapping is complete, disconnect
bonnet, clean the seating surfaces, reassemble, and
then test for shutoff. If leakage is still excessive, repeat
lapping procedure.

Table 2: Body to Bonnet Torque

Valve Size

Bolt Torques

SA 193-B7, B8M

N•m Lbf•Ft N•m Lbf•Ft

a

SA-193-B8M

b

8 746 550 529 390

Table 3: Torque Values for Packing Flange Nuts

Valve Stem Diameter

Inches Mm Min. Torque Max. Torque Min. Torque Max. Torque

ANSI
Rating

Lbf•in N•m Lbf•in N•m Lbf•in N•m Lbf•in N•m

PTFE Type Packing Graphite Type Packing

a- Strain Hardened; b- Annealed

3/4 19.1 150 47 5 70 8 99 11 149 17

300 64 7 95 11 133 15 199 23

600 87 10 131 15 182 21 274 31

1 25.4 300 108 12 162 18 226 26 339 38

600 149 17 223 25 310 35 466 53

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