Emerson Clarkson series Instructions Manual page 3

Clarkson serIes KGF and KGF-HP Slurry valveS
InstallatIon and maIntenance InstructIons
3. Tables 1 and 2 state the maximum flange
bolt tightening torques for standard flange
patterns. While the KGF and KGF-HP are
provided with flange bolt patterns that
match aSMe B16.5/150 or aSMe B16.5/300
flange bolt patterns, they are not designed
to handle the same torque requirements
as an all-metal Class 150 or Class 300 gate
valve. The KGF and KGF-HP are specialty
valves with a specified maximum flange
torque. exceeding recommended torque
values will reduce overall valve performance
and may permanently damage the sleeves
and or other components.
4. The KGF and KGF-HP are configured for
installation in conventional bolted flange
connections. Slip on or weld flanges can
be used. The pipeline companion flanges
should be raised or flat face type to insure
full sleeve support and a continuous,
unvarying i.d. if slip-on flanges are used,
the pipe should be cut square and welded
in position with the pipe end matched
evenly with the flange face. Studded flanges
are not compatible with these valves.
use of other flange connections should
be reviewed and verified by the factory
for compatibility prior to installation.
5. The mating line flanges must be properly
aligned prior to attempting installation.
never try to make up for misaligned pipe
flanges by the line bolting.
6. Optimum performance of the valve sleeves
may be achieved if the mating pipe i.d. is no
larger than +0.25" (6.5 mm) of the retainer
flange i.d. (refer to Table 4 for retainer
flange dimensions.) Oversized mating pipe
i.d. may subject retainer flange and sleeve
to additional wear.
7. listed in Table 4 are the fasteners required
for installation.
8. Pipe supports and/or expansion joints
should be used to minimize pipe loads
on valves.
9. The elastomer coated retainer flange
functions as the gasket for installation
into the pipeline, no additional gaskets
are required.
10. valve is suitable for use in either vertical or
horizontal lines. The valve can be installed
in any position in vertical or horizontal
pipelines. However, valves installed in
an orientation with the actuator below
horizontal may require flushing to prevent
the buildup of solids in the housing and
may require additional actuator support.
Installation notes
a) all slurry knife gate valves are designed and
manufactured to be installed in applications
where no more than 1g of force in excess
of gravity is applied to the valve in any
direction. This 1g force can be an effect
of traffic, wind, or earthquake, etc. valves
should not be used in applications that
exceed 1g.
B) if valve stem or topworks protrude into
walkways or work areas, valve should
be flagged per company safety policy.
C) all piping systems should contain
independent support mechanisms and
should not utilize the valve as a sole
means of support.
d) do not install valve over walkways, electrical
or other critical equipment without the use
of a splash guard device (refer to section 14)
or similar considerations.
FiGure 2
retainer flange i.d.
table 1 - MaxIMuM tIGhtenInG torque
standard Class 150 FlanGes
Valve size ft·lbs
3 37
4 37
6 69
8 69
10 113
12 113
14 169
16 169
18 238
20 238
24 345
30 345
36 610
table 2 - MaxIMuM tIGhtenInG torque
standard Class 300 FlanGes
Valve size ft·lbs
3 69
4 69
6 69
8 113
10 169
12 238
14 238
16 345
18 345
20 345
24 610
30 1000
36 1500
nm
50
50
64
64
153
153
229
229
324
324
467
467
827
nm
94
94
94
153
229
324
324
467
467
467
827
1355
2035
3