Emerson Clarkson series Instructions Manual

Clarkson SerieS KGF and KGF-HP Slurry valveS
InstallatIon and maIntenance InstructIons
Before installation these instructions must be fully read and understood
Index
1. General information ...................................... 1
2. initial inspection ............................................ 2
3. installation instructions ................................ 2
4. Operation ....................................................... 5
5. lockouts ....................................................... 6
6. General maintenance ................................... 7
7. Spare parts ................................................... 8
8. Storage .......................................................... 9
9. Sleeve replacement .................................... 10
10. Gate support replacement .......................... 12
11. Secondary seal replacement ...................... 12
12. disassembly and assembly instructions ... 13
13. Field replacement of gates ......................... 16
14. Body flushing and discharge ...................... 17
15. installation instructions for splash
guard bucket ................................................ 18
16. installation instructions for splash
guard plate ................................................... 18
17. lifting ........................................................... 18
18. Manual handwheel actuator assembly ...... 19
19. Bevel gear actuator assembly .................... 19
20. air cylinder actuator assembly................... 20
21. Hydraulic cylinder actuator assembly ....... 20
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This instruction manual provides installation,
operation and maintenance recommendations
for both the Clarkson KGF and Clarkson
KGF-HP slurry knife gate valves. The standard
KGF is a 300 psi CWP valve with optional
pressure ratings up to 450 psi cwp and the
KGF-HP is rated to Class 300 (740 psi CWP).
Both products are very similar, however,
the KGF-HP has a higher pressure rating
and critical parts are not interchangeable.
The KGF and KGF-HP are identified by
the valve tag.

1 General InForMatIon

1. The KGF and KGF-HP are packingless,
slurry knife gate valves. all the sealing is
accomplished by the elastomeric sleeves
in the valve housing. The sleeves also form
the wear section for the valve. The gate is
removable for inspection or replacement
while the valve is in service. refer to
Section 13 for gate removal cautions
and instructions.
2. The KGF and KGF-HP are BidireCTiOnal
(two-way shut-off) product and can be
installed without concern over direction of
flow. Since they will shut-off equally with
in either direction, you will find no arrows
or other indicators of a direction of flow or
seat side.
3. Clarkson slurry knife gate valves are
suitable for on-off service only. They are
not to be used in a throttling application.
4. The style, size, pressure rating and material
selection are the responsibility of the piping
system designer.
5. all valves should be operated within the
design pressure and temperature ranges.
under no circumstances should the valves
be operated at conditions outside these
parameters. do not exceed 100% of the
maximum pressure rating of the valve at
any time during its operation. Pressure
spikes beyond the valve's pressure rating
are solely the responsibility of the user.
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VCIoM-06613-en 17/08