IMO 7/18
6
IMO-213 EN
NOTE: When ordering spare parts, always include the
following information:
a. Valve catalog code from Identification plate or
body stamping,
b.
If the valve is serialized – the serial number
(stamped on the valve body or identification plate),
c. From Figure 8, the ballooned part number, part
name and quantity required.
4.4
Assembly
NOTE: Repair Kits contain replacement seals for
Fire-Tite
and
non-
Fire-Tite
constructions.
1. Inspect the parts to ensure sealing surfaces are in good
condition and all parts are properly cleaned and prepared
for assembly.
2. Clamp the body (1) securely in a vise with the body joint
opening facing up.
3. Insert the seat (5) into the body (1) with the flat side down,
as shown in (Figure 7).
4. Place the stem bearing (24) on the stem (4). NOTE:
Fire-Tite
valves have 2 stem bearings (13) and a secondary stem seal
(7) as shown in (Figure 8).
5. Insert the stem (4) with the bearing(s) into the valve body
and through the stem bore in the body, as shown in
(Figure 8).
6. Holding the stem in place from the inside, install the stem
seal (8) and the compression plate (20). For valves with
graphite stem seals (8), install upper stem bearing (10) and
anti-extrusion ring (55) prior to installing the stem seal (8).
7. Place the disc springs (31) on the hex head cap screws (29).
Disc spring orientation is shown in (Figure 8). Install the
hex head cap screws through the compression plate and
bring them down hand tight.
8. While pressing the stem (4) outward from inside the body,
tighten the hex head cap screws to the torque provided
in (Table 1). Apply torque evenly, alternating between
the two cap screws so that the compression plate will be
parallel with the valve body bonnet.
9. Align the stem to the ball slot. Insert the ball (3) so that the
internal stem blade fits into the ball slot.
10. To prepare for final assembly, obtain a torque wrench.
When assembling without a torque wrench, install the
body cap (2) into the body (1) without the second seat
or the body seal. Tighten firmly by hand or snug with a
wrench. Draw a line across the body joint to identify the
fully installed position (See Figure 10). The line should be
clearly visible on both the body (1) and the body cap (2).
Remove the body cap (2) and continue with the assembly.
11. Insert the second seat (5) with the flat facing up. Insert the
body seal (6).
12. Apply Loctite™ 272 or equivalent thread locking compound
to the threads in a single generous bead, 360 degrees
around the body cap (2) threads. Spread the compound
until threads are evenly coated. Ideally, thread roots
will be filled with the compound with only the crests
protruding (See Figure 9).
13. Install the body cap (2) hand tight. Wipe away excess
Loctite.
14. With a torque wrench, tighten the body cap (2) to the
torque listed in (Table 2). When assembling without
a torque wrench, tighten the body cap (2) until fully
installed and the lines made in step 10 show the body
cap (2) has rotated past the fully aligned position (Figure
9). Wipe away excess Loctite.
15. Install handle (17), lockwasher (19) and handle nut (16)
and tighten to torque listed in (Table 3).
16. Cycle the valve slowly to ensure smooth operation.
TABLE 2
Handle Nut Torque
Valve Size
Torque – FT•LBS (N•m)
Inches
DN
3/4
20
150 (203)
1/4-1/2
8-15
100 (136)
1
25
250 (339)
1-1/4
30
350 (476)
1-1/2
40
400 (542)
2
50
500 (678)
TABLE 3
Handle Nut Torque
Valve Size
Torque – FT•LBS (N•m)
Inches
DN
1/4 – 3/4
8 – 20
9 (12)
1, 1-1/4
25, 30
23 (31)
1-1/2, 2
40, 50
33 (45)
4.5
Testing the Valve
WARNING:
WHEN PRESSURE TESTING, EXERCISE CAUTION AND MAKE SURE
ALL EQUIPMENT USED IS IN GOOD WORKING CONDITION AND
APPROPRIATE FOR THE INTENDED PRESSURE.
If the valve is to be tested prior to returning to service make
sure the test pressures are in accordance with an applicable
standard.
When testing the valve for external tightness, keep the ball
in the half open position.
If testing the valve seat tightness, please contact Metso for
advice.
WARNING:
WHEN PERFORMING ANY TESTS, NEVER EXCEED THE MAXIMUM
OPERATING PRESSURE OR MAXIMUM SHUT-OFF PRESSURE LISTED
ON THE IDENTIFICATION PLATE OR BODY!
5.
ACTUATOR MOUNTING
5.1
General
These actuator mounting instructions describe the steps
required to assemble the
Jamesbury
¼ - 2” (DN8-50) Standard
Bore, Series Eliminator Model B Thread-end Ball Valves to
