Flowserve CL94 Series Three-Piece Chlorine Ball Valve 1/2-2 - Manual (Page 5)

06959-G 5
Flow Control Division
Worcester Controls
TO REASSEMBLE ¹₂"–2" FLANGED ONE-PIECE CL94 VALVES:
6. On all sizes except the ¹ ₂", place the far seat in the body
cavity.
7. Insert the stem down through the bonnet and into the body.
8. Place the split thrust bearing in the recessed diameter above
the stem tang. Place the split ring in the same recessed
diameter, under the split thrust bearing (refer to exploded
view).
9. Pull the stem up so that the split thrust bearing and split ring
are drawn into the stem hole recess in the ball cavity. See
instructions 21 through 26 for stem packing and gland plate
assembly.
10. Install far seat ( ¹ ₂" valves only). With the valve in the closed
position (stem flats going across pipeline), insert the ball into
the body so that the stem slot engages the tang on the stem.
11. Install the body seal. Be certain that the body seal rests
squarely on the sealing surface in the body.
12. Insert the other seat into the cavity in the end plug.
13. Install the end plug into the body and tighten until the body
and end plug make metal-to-metal contact. The end plug may
project up to .009" beyond the surrounding serrated surface.
End plug must be fully tightened against machined step in
body. If in doubt, assemble end plug without seat and seal,
make a witness mark, then reassemble the full assembly.
TO REASSEMBLE 3"–4" FLANGED ONE-PIECE CL94 VALVES:
14. Place the thrust bearing on the stem.
15. Insert the stem and thrust bearing into the body through the
ball cavity. See instructions 21 through 26 for stem packing
and gland plate assembly.
16. Place one of the seats in the body cavity.
17. With the valve in the close position (stem groove going
across pipeline), insert the ball into the body so that the stem
slot engages the tang on the stem.
18. Install the body seal. Be certain that the body seal rests
squarely on the sealing surface in the body.
CAUTION: If the body seal is installed on the end plug, it
will be damaged.
19. Insert the other seat into the cavity in the end plug.
20. Assemble the end plug into the body as far as it will go.
Secure with end plug retaining screws tightening each one
firmly. The end plug screws only retain the end plug. Flange
bolt force is required to compress the body seal and seat the
end plug. Proper installation will allow not more than .010"
protrusion of the end plug beyond the valve body.
Upon reinstallation of the valve in the line, retighten the end
plug retaining screws after the flange bolts are fully torqued.
THE FOLLOWING INSTRUCTIONS ARE FOR ALL CL94 VALVES:
21. NOTE: Be certain that the stem seals are lubricated per
Rebuilding, section D, prior to assembly.
Install the following parts over the stem and into the packing
chamber in this order (refer to packing assembly drawing):
Filler ring, 629 seal, lantern ring-T, three Chevron packing
rings (for
¹ ₂"-2" three-piece and one-piece valves only, one
Chevron ring is of carbon-filled fluoropolymer material and
black in color and must be positioned as the top ring),
follower-T, follower-G or one-piece follower-T.
22. Install gland plate over stem.
23. Place three sets of two Belleville washers on each gland bolt.
Each set consists of two Bellevilles opposing each other with
their O.D.s touching.
24. Lubricate the gland bolt threads with an anti-galling agent,
such as Christo-Lube MCG-111. Install gland bolt/Bellevilles
through the gland plate and thread them into the body.
Tighten the bland bolt per Maintenance, A. Be certain that the
bolts do not bind — this can result in improper packing
loading.
CAUTION: Tightening the gland bolts can cause the stem to
be pushed into the ball cavity. The stem must either be
fixtured to prevent this, or be worked back into position
when assembling the ball and seats in to the body.
25. Tighten the body bolts per Installation Section C.6. ( ¹ ₂"–2"
three-piece valves only).
26. Add handle (if any) and tighten the handle set screws.
For 3"–4" flanged one-piece valves, add stop, spacer, and handle
assembly (if used) and tighten handle retaining bolt.
Note: The spacer is to be used only if one was removed with the
handle assembly and stop.
RECOMMENDED SPARES
When ordering parts, please provide the part name and all the valve
code information found on the nameplate on the body: valve size,
style, materials, ends, and “R” number (Revision Number).
Example: 1" CL94 4C T SE R1 Ball or
3" CL94 4C RT300 RO Stem
Valves may also be marked with additional “P”, “T”, “C’, or similar
number. These numbers designate non-standard products and must
be specified along with the valve code.
Example: 1" CL94 4C T SE P-2933 Ball or
¹ ₂" CL94 4C RT150 T-1340 Stem