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5
KEYSTONE SLURRY CONTROL VALVES
FIGURE 638 SERIES E/SERIES 2
Complete assembly instructions for DN 40 - 200 Class 150, 300 and 600 slurry control valves
IMPORTANT NOTES FOR VALVE ASSEMBLY
a) Use silicon lubricant on all O-rings.
b) Use soft dolly’s for assembling components
when necessary.
c) Clean all reusable components before
reassembly.
d) All fasteners to be coated with anti-seize
compound.
e) Execute EXTREME CAUTION when
assembling valves with ceramic
components.
f) If components do not fit DO NOT force them.
ASSEMBLY PROCEDURE
1. Press new bearings (9) into upper and
lower inserts (7/8).
2. Preform packing (15) in upper insert (7)
using shaft (6) and gland collar (14)
3. Fit O-rings (16) on both upper and lower
inserts (7/8).
4. Fit disc end spacer ring (10) over disc end
spacer loader (11) then fit O-rings (22, 23
into disc end spacers (10, 11).
5. Fit the liner (2) into the body (1) ensuring
correct bore alignment.
6. Load the disc end spacers (10, 11) into the
body and liner shaft bore cavities.
Note: It is important to load spacers from
the body, inwards to avoid O-ring damage.
7. Fit disc springs (12) in behind the disc end
spacers (10, 11).
Note: Springs must be installed with tapers
opposing to form gaps between springs
(see diagram over leaf).
8. Fit upper and lower inserts (7, 8) loosely
into the body bores and take up (do not
tighten the upper and lower insert retaining
screws (19, 20).
9. Loosely fit the gland plate and collar (13,14)
onto the shaft (6).
10. The disc (3) can now be inserted into the
body, between the disc end spacers.
11. Insert the shaft (6) complete with the gland
assembly attached, through the body and
disc, ensuring that all components are
correctly aligned.
Note: The use of excessive force may cause
O-ring damage.
12. Tighten all of the insert retaining screws
(19, 20).
13. With disc in the closed position, line up the
disc pin holes and drive in the disc pins (4)
central to the shaft.
14. Ensure that the shaft (6) and disc (3) are
free to rotate.
15. Drive disc pin inserts (5) into disc
pins onboth sides of the disc.
(see disc pinning detail overleaf).
16. Tighten the gland nuts (18) on the gland
follower studs (17) until firm.
17. The valve is now ready for
installation. Refer to installation and
commissioninginstructions.
18. The gland may need to be adjusted on plant
start up.
2
3
4
6
18
17
13
14
19
20
15
7
9
16
12
22
23
11
10
1
10
11
23
22
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www.valves.emerson.com © 2017 Emerson. All rights reserved.
VCIOM-02910-EN 15/09
16
9
8
20
19
(6) Shaft
(5) Disc pin insert
(6) Shaft
(5) Disc pin insert
(4) Disc pin
(3) Disc
(14) Gland collar
(15) Gland packing
(7,8) Insert
(9) Bearing
(16) O-ring
(12) Disc springs
(11) DES loader
(22) O-ring
(23) O-ring
(10) DES ring
KEYSTONE SLURRY CONTROL VALVES
FIGURE 638 SERIES E/SERIES 2
(22) O-ring
(23) O-ring
(10) DES ring
(14) Gland collar
(15) Gland packing
(7,8) Insert
(9) Bearing
(16) O-ring
(12) Disc springs
(11) DES loader
TYPICAL ASSEMBLY - UPPER O-RING DETAIL
(6) Shaft
(5) Disc pin insert
(4) Disc pin (4) Disc pin
(3) Disc (3) Disc
DISC PINNING DETAIL (DN 200)DISC PINNING DETAIL (DN 80 - 150)
(6) Shaft
(5) Disc pin insert
© 2017 Emerson. All rights reserved.
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