Jordan Valve Mark EZ Series Globe Style Control Valve User Manual

Page 7

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Assembly Continued,

To avoid failure in service for valves with 1-1/2 and
2-inch ports and composition seats, never reuse an
old valve plug tip with a new valve plug guide. Us-
ing an old valve plug tip with a new valve plug guide
requires drilling a new pinhole in the valve plug tip
which will weaken the tip. However, a used valve plug
guide may be reused with a new valve plug tip.

For valves with 1-1/2 and 2-inch ports and
composition seats,

refer to figure 13. Insert the

disk (key 29) in the valve plug guide (key 27). Screw the

tip (key 30) into the valve plug guide to clamp the disk in

place. Using a 3/32-inch bit, drill through the valve plug

tip using the hole in the valve plug guide as a drilling

guide. Remove any chips or burrs and drive in a new pin

(key 31).

To avoid failure in service, never reuse an old stem
with a new valve plug guide. Using an old stem with a
new valve plug guide requires drilling a new pin hole
in the stem, which will weaken the stem. However,
a used valve plug guide may be reused with a new
stem except for valves with ½ through 1-inch ports
and composition seats (see to figure 12). For these
constructions, a used valve plug guide should only be
used if the tip is
reused.

For all valves with composition seats,

screw

the valve stem (key 7) into the valve plug guide

(key 27, figure 12). Tighten to the torque

value given in figure 10. Refer to figure 9

to select the proper drill size. Drill through

the stem, using the hole in the

valve plug guide as a drilling guide. Remove any

chips or burrs and drive in a new pin (key 8) to

lock the assembly.

Install the seat ring gasket (key 13), and replace

the seat ring (key 9). With some valve plug sizes

and configurations, the valve plug or tip will slide

through the seat ring retainer and bushing assem

bly (keys 3 and 26), and in other configurations it

won’t.

5. If the valve plug (key 2) or valve plug tip (key

30, figure 12) will not slide through the seat ring

retainer and bushing assembly (keys 3 and 26),

proceed as follows:

a. Place the seat ring retainer and

bushing assembly (keys 3 and

26) over the stem of valve plug

and stem assembly or over the stem of

the valve plug guide and stem assembly.

b. Install the seat ring retainer and bush

ing assembly, which also includes the

valve plug and stem assembly or

valve plug guide and stem assembly,

on the top of the seat ring, ensur

ing that the seat ring retainer slips onto

the seat ring properly. Any rotation orien

tation of the seat ring retainer

with respect to the valve body is

acceptable.

c. Place the spiral wound gasket, shim,

and bonnet gasket (keys 12, 25, and 10)

on the shoulder of the seat ring retainer.

6. If the valve plug (key 2) or the valve plug tip

(key 30, figure 12) will slide through the seat ring

retainer and bushing assembly (keys 3 and 26),

proceed as follows:

a. Install the seat ring retainer and

bushing assembly on the top of

the seat ring, ensuring that the

seat ring retainer slips

onto the seat ring properly. Any rotation

orientation of the seat

ring retainer with respect to

the valve body is acceptable.

b. Place the spiral wound gasket, shim,

and bonnet gasket (keys 12, 25,

and 10) on the shoulder of

the seat ring retainer.

c. Slide the valve plug and stem assem

bly or the valve plug guide and stem

assembly into the seat ring retainer and

bushing assembly (keys 3 and 26).

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