Type EZH Relief or Backpressure Regulator
8
12. Place disk retainer (key 31) with the disk holder
assembly (key 30) into sleeve adaptor (key 27) and align
screw holes.
13. Place lock washer (key 32) onto the screws (key 33).
14. Screw together the disk retainer assembly into the
sleeve adaptor (key 27). See Torque Specifications
(Table 3) for proper torque values.
15. Lubricate the sleeve (key 14).
16. Carefully insert the trim system into the sleeve guide
(key 61) utilizing eye bolt (key 35). Align sleeve utilizing
the socket hex cap screw (key 74) as a guide.
17.
Screw special screws (key 68) to affix the sleeve
system. See Torque Specifications (Table 3) for proper
torque values. Place O-ring (key 69) on cap.
18. Remove eye bolt (key 35) from upper spring seat
(key 73) threaded hole.
19. Carefully place the cap on the upper actuator casing
(key 11).
20. Lubricate cap screws (key 77) and attach cap (key 70)
to the upper casing using cap screws (key 77). See
Torque Specifications (Table 3) for proper torque values.
Note
Rotate the cap (key 70) such that the outer
holes for sensing lines are in line with upper
casing holes for sensing lines. To validate
the alignment and before attaching cap, check
that travel indicator is aligned on the cap and
on the upper actuator casing.
21. Mount O-ring (key 75) on the space between the cap
(key 70) and the upper actuator casing (key 11).
22. Screw the eye bolts (key 35) on the cap (key 70).
NPS 1 through 3 / DN 25 through 80
Intermediate Flange O-ring Maintenance
for Type EZH
1. Remove nuts (key 26).
2. Carefully lift the upper actuator casing and lower actuator
casing assemblies (keys 11 and 5) off the body (key 1).
3. Remove cap screws (key 6).
4.
Lift off intermediate flange (key 25).
5. Remove O-ring (key 7). Inspect the O-ring for damage
or wear, and replace if necessary. Lightly lubricate O-ring
before placing in the body (key 1).
6.
Place the intermediate flange (key 25) on the body,
make sure to position the stud bolt (key 24) holes on the
outsides of the body (key 1). Secure with cap screws
(key 6). See Torque Specifications (Table 3) for proper
torque values.
7. Carefully lift upper actuator casing and lower actuator
casing assemblies (keys 11 and 5) and position it in the
body (key 1).
8. Screw in stud bolts and nuts (keys 24 and 26).
See Torque Specifications (Table 3) for proper
torque values.
GD89918_J
Figure 4. Type EZH Main Valve Assembly (continued)
NPS 1 THROUGH 3 / DN 25 THROUGH 80
L2
L2 L2 L2
L2
L1
L2
L2
L2
S1
S1
S1
S2
L1
L2 L2
L2
L2
L2
L2
L2
L2
L2
L2
4
3
2
1
139
192
140
142
143
141
145
144
6
35
33
32
34
33
32
31
30
29
28
27
6
26
25
24
23
22
21
10
43
35
39
36
37
60
59 37
5
7
8
9
8
62
10
11
44
13 14
4
8 10 9
8 15 16 17 18 19 20
138
143
