Type EZL
10
7b. On the 4 in. / DN 100 size remove the intermediate
ange (key 25), seat ring (key 2) and O-ring
(key 75) (see Figure 7, Detail A.2). The seat ring
(key 2) can be moved out of the way and the O-ring
(key 75) can be removed without removing the
intermediate ange (key 25). Inspect the O-ring for
damage or wear, replace if necessary.
Note
If also inspecting the intermediate
Intermediate Flange O-ring Maintenance
section below.
8a. For the 2 and 3 in. / DN 50 and 80 sizes reinstall
the spring washer (key 72) with the inside edge
pointing up. Lightly lubricate O-ring (key 34) before
placing on top of the spring washer (key 72) in the
body (key 1).
8b. For the 4 in. / DN 100 size lightly lubricate the
O-ring (key 75) and place it in the body (key 1).
9. Set the seat ring (key 2) back in the body (key 1)
with the curved side down and the seat edge up.
10. Place the disk holder assembly (key 30) and disk
retainer (key 31) on the sleeve adaptor (key 27).
11. Insert the spring lock washers (key 32) and hex
socket cap screws (key 33) and tighten. See
Torque Specication table for proper torque.
12. Lubricate surface between lower casing and
intermediate ange. Carefully lift the upper
actuator casing and lower actuator casing
assembly (keys 11 and 5) and place on the body
(key 1). Secure with stud nuts (key 26). See
Torque Specication table for proper torque.
Intermediate Flange O-ring Maintenance
1. Make a mark on the lower actuator casing
(key 5), intermediate ange (key 25) and body
(key 1) to indicate proper alignment.
2. Remove stud nuts (key 26).
3. Carefully lift the upper actuator casing and lower
actuator casing assembly (keys 11 and 5) off the
body (key 1).
4. Remove cap screws (key 6).
5. Lift off intermediate ange (key 25).
6. 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).
Note
If performing Seat Maintenance in
conjunction with Intermediate Flange
O-ring, return to step 7 of the Intermediate
Flange O-ring Maintenance section.
7. Replace the intermediate ange (key 25), 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 Specication table for
proper torque.
8. Lubricate the surface between the lower casing
and the intermediate ange. Reinstall actuator
assembly to body.
Table 3. Torque Specications
m
Body Size
Indicator Fitting
(key 56) or
Plug (key 38)
Stud Nuts
(key 26)
Socket Head Cap
Screws (key 16)
(1)(2)
Cap Screws
(keys 21 and 39)
Cap Screws
(key 6)
Socket Head Cap
Screws (key 33)
(1)
2 in. / DN 50 10 to 15 / 15 to 20 45 to 50 / 60 to 70 55 to 60 / 75 to 80 35 to 45 / 50 to 60 50 to 60 / 70 to 80 55 to 60 / 75 to 80
3 and 4 in. /
DN 80 and 100
10 to 15 /
15 to 20
80 to 95 /
110 to 130
90 to 100 /
120 to 135
31 to 34 /
42 to 46
70 to 95 /
95 to 130
80 to 90 /
110 to 120
1. Socket head cap screw (keys 16 and 33) torque specications are given in in-lbs.
2. Apply torque to each screw in star pattern, 5 complete rounds.
(32 strony)
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