Keystone Slurry Control Valves Owner's manual

Brand: Keystone

Model: Slurry Control Valves

Type: Owner's manual

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

VCIOM-02910-EN 15/09

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).

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.

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 onboth 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

commissioninginstructions.

18. The gland may need to be adjusted on plant

start up.

(6) Shaft

(5) Disc pin insert

(4) Disc pin

(3) Disc

(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

TYPICAL ASSEMBLY - UPPER O-RING DETAIL

DISC PINNING DETAIL (DN 200)DISC PINNING DETAIL (DN 80 - 150)

(5) Disc pin insert

(4) Disc pin (4) Disc pin

(3) Disc (3) Disc

(6) Shaft

(14) Gland collar

(15) Gland packing

(7,8) Insert

(9) Bearing

(16) O-ring

(22) O-ring

(23) O-ring

(12) Disc springs

(11) DES loader

(10) DES ring

(6) Shaft

Keystone Slurry Control Valves Owner's manual

Keystone Slurry Control Valves Owner's manual

Keystone Slurry Control Valves Owner's manual

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