Instruction Manual
D103356X012
24000C Valve
February 2019
6
Table 2. Seat Ring Assembly and Torque Tool
24000C
VALVE SIZE
NPS (Inch)
(DN)
1/2
(15)
3/4
(20)
1
(25)
1-1/2
(40)
2
(50)
Port Diameter
0.25
(1)
GE96219X012
GE96219X012
GE96219X022
- - -
- - -
0.375
(1)
GE96219X012
GE96219X012
GE96219X022
- - -
- - -
0.8125
(2)
GE96219X012
GE96219X012
GE96219X022
- - -
- - -
1.0625
(2)
- - -
- - -
GE96219X022
- - -
- - -
1.25
- - -
- - -
- - -
GE96219X032
- - -
1.5
- - -
- - -
- - -
GE96219X032
GE96219X042
2
- - -
- - -
- - -
- - -
GE96219X042
Installation Torque (lb
w
ft)
60
60
80
100
130
1. Male end used for trim 151.177, and port diameters .25 and .375
2. Female end used for port diameters .8125 and 1.0625
Lapping the Metal Seat
If valve seat leakage becomes excessive, it may be necessary to lap the valve seat.
Lapping is the process of mating the valve plug to the seat ring, with an abrasive to produce a close fit. When valve seat
leakage becomes excessive, lapping becomes necessary. The plug and seat ring seating surfaces should be free of
large scratches or dents and the contact surface of the seats should be as narrow as possible.
1. Use a good quality lapping compound with a mixture that contains 280 to 600 grit. Apply at several spots around
the plug seating surface. Replace the plug (key 4) in the bonnet (key 8).
2. Place the bonnet (key 8) loosely into the valve body (key 1) to serve as a guide during the lapping operation.
3. Lap the valve by applying a slight pressure on the stem and rotate the stem in short oscillating strokes
approximately 8 to 10 times or until you see an even and complete lap line. The plug should be intermittently lifted
and turned 90 degrees while lapping to keep the plug and seat ring concentric.
4. Clean the valve seat and plug (key 4) thoroughly when the lapping is complete, removing all traces of lapping
compound.
Replacing Packing
Refer to the standard packing construction and the optional packing shown in figures 3, 4, and 5 to determine the
packing that has been preinstalled in your valve.
1. Disassemble the valve as directed earlier. Remove the locknuts (key 27) and indicator disk (key 58), and turn the
plug and stem (keys 4 and 5) out through the packing box. Remove the packing follower (key 10). Push out the old
packing (key 14) by working from the underside of the bonnet (key 8).
2.
Standard spring loaded PTFE V-ring packing (figures 3 and 4):
Insert each piece in exact order shown in figures 3 and
4. Hand tighten the packing follower (key 10) until it shoulders on the bonnet (key 8). This will compress the
packing spring (key 6), to enable constant stem sealing throughout the packing life.
3.
Molded graphite (flexible graphite) packing (figure 5):
Insert each piece in exact order shown in the figure 5. Hand
tighten the packing follower (key 10). Use a wrench to increase tightness by turning the nut an additional 60
degrees.
Actuator and Valve Body Reassembly
1. Before installing seat ring in valve body, thoroughly clean the threads in the valve body port. Apply suitable
lubricate to the threads and tighten to torque specified in table 2. Remove all excess lubricant after tightening.
