DeZURIK
D10322
Page 28
November 2020
Valve Reassembly
1. With the valve horizontal and the seat side down, align the shaft hole in the disc (A3) with the
assembled bearing components in the body.
2. Then insert the bottom end of the shaft (the end without an actuator connection) into the top of
the body and push the shaft into position.
3. Rotate the shaft so that the line on the top end of the shaft is towards and parallel with the flat
(or concave) side of the disc.
On valve sizes 2
–12" (50–400mm)
a. Slide the shaft so that the top
end of the shaft protrudes
from the body to the
dimension in Table E.
b. Place the disc pin (A5) in the
hole in the disc (A3) as
shown in Figure 15 on page
29 and tap the end of the pin
lightly to seat the pin against
the flat on the shaft (A4). A
new set screw (A24) is
required.
c. Apply Loctite 271 to the set
screw threads.
d. Turn the set screw into the
end of the pin and tighten the set screw as shown in Table F (page 28).
e. As shown in Figure 15 (page 29), stake the end of the set screw threads once with a pointed
punch to secure the set screw in position.
On valve sizes 14" (350mm) and larger,
a. Slide the shaft so that the disc pin slots in the shaft are aligned with the disc pin holes in the
disc.
b. Apply a rust inhibitor such as Never Seez to the threads of the disc pins (A5).
c. Use two new pins and turn the pins into the threaded holes in the disc (A3) and against the
slots in the shaft (A4) as shown in Figure 15 (page 29).
d. Adjust the pins so that both pins protrude the same distance above the disc surface and
tighten the pins as shown in Table F (page 28).
e. As shown in Figure 15 (page 29), stake the screw threads on each disc pin once with a
pointed punch to secure the pins in position.
4. Replace the seat and the seat retainer as described in steps 4, 5 and 6 in the
Seat
Replacement
section on page 20.
5. Replace pin (A46) in valve shaft (A) (does not apply to valves with stepped shafts).
Table E: Dimension from Top
–of–Body to
Top
–of–Shaft
Valve Size
Class 150
Class 300
in
mm
in
mm
in
mm
2
–3
25
–75
3.75
95
3.75
95
4
100
3.75
95
4.25
105
5 & 6
125&150
4.25
108
4.25
108
8
200
4.25
108
4.63
118
10
250
4.63
118
4.75
120
12
300
4.75
120
4.75
120