Emerson Clarkson series Instructions Manual page 14

Clarkson SerieS KGF and KGF-HP Slurry valveS
InstallatIon and maIntenance InstructIons
8. remove the cotter pin from the clevis pin
and remove the clevis pin from the gate. it
may be necessary to actuate the valve down
slightly in order to relieve pressure on the
clevis pin to facilitate removal.
9. remove the actuator/frame subassembly at
one time by removing the frame bolts that
fasten the frames to the housing and pulling
it away from the housing assembly.
10. loosen the secondary seal retainer
plate bolts.
11. remove the gate by lifting it out of the
secondary seal.
12. remove all fasteners and lockwashers that
retain the secondary seal retainer plate in
position.
13. remove the secondary seal retainer plate
by lifting it up.
14. remove the secondary seal by inserting a
flat blade screwdriver midway along the
outside of the seal, between the seal and the
valve housing. Pry the seal up and remove.
15. remove housing bolts, and pull
halves apart.
16. remove old housing gaskets (two).
FiGure 11
retainer flange
retainer flange bolts/nuts
Visual inspection of parts prior to reassembly
1. Check and ensure all housing interior
surfaces and drain ports are free and clear
of hardened slurry or other obstructions.
Clean as required.
2. inspect the valve housing ensuring that the
bores at the center of the valve are aligned
with each other. replace if there are signs
of excessive or unusual wear.
3. inspect gate supports for wear,
mushrooming, chemical attack, etc. replace
if in doubt; supports should be replaced as a
set and are recommended for replacement
if sleeves are replaced.
4. examine exterior housing surfaces for
buildup of hardened slurry or other
contamination, clean as required.
5. examine sleeves for signs of wear, cracking,
chunking, deep cuts, severe abrasion or
chemical attack (softening or gumming).
Replace if in doubt; sleeves must be replaced
as a set.
6. examine secondary seal for signs of wear
or cracking, severe abrasion or chemical
attack (softening or gumming). replace if
in doubt.
Gate
Secondary seal retainer
Secondary seal
Housing
Housing gasket
Sleeve
Housing bolts/nuts bolts
Gate support
(quantity depends on valve size)
Gasket (2)
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