Dyna-Flo Control Valve Services Ltd.
Phone: 780
•
469
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4000 Toll Free: 1
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866
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396
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2356 Fax: 780
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4035 Website: www.dyna
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o.com
Model 380 Control Valve
(8 Inch Only)
P-388M0319A
8
Operation, Parts, and Instruction Manual
VALVE DISASSEMBLY
(Continued)
Packing and Packing Parts Removal
CAUTION:
Concentrated gases could be trapped in the
packing! For live loaded packing removal instructions refer
to the P-LLPS manual.
1
Remove all packing parts (Keys 2 through 9, & 14) from
the packing bore. Use a rounded tool to remove the
packing set (Keys 2, 3 & 4) from the packing bore. Clean
all metal parts; if they are not damaged they can be
reused.
2
Inspect the packing bore for any scratching or corrosion;
minor scratching or pitting in the packing bore can be
polished
out.
Body Gasket Removal
1
A razor or a pick-set can be used to remove old seat ring
gaskets (Key 23) or o-rings (Key 31).
CAUTION:
Care must be taken to avoid damaging these
surfaces.
NOTE:
Spiral wound gaskets (Key 23) make their seal by being
crushed. Spiral wound gaskets cannot be reused.
2
Inspect all gasket surfaces for damage.
3
Inspect the internal body surfaces for any signs of
corrosion, erosion or irregular wear.
ASSEMBLY
Ensure that all parts have been cleaned and inspected as
per disassembly section.
NOTE:
For instructions on Anti-Cavitation and Low-Noise
Trims contact the Dyna-Flo Sales Of
fi
ce.
NOTE:
Use an anti-seize compound that is approved for the
service conditions that the valve is being installed into.
NOTE:
Spiral wound gaskets (Keys 23) make their seal by
being crushed. Spiral wound gaskets cannot be reused.
1 For spiral wound seat ring gasket (Key 23):
Coat the seat ring gasket with nickel anti-seize compound
and insert it into the seat pocket in the body.
For seat ring o-ring (Key 31):
Lubricate the o-ring with the appropriate o-ring lubricant
and insert the o-ring into the o-ring groove on the under-
side of the seat ring (Key 21). Refer to Figure 13.
NOTE:
To order the proper seat ring you will need to know the
Valve Serial Number. Old style seat rings will be used for valves
with Serial Numbers
BEFORE
P191270-01, new style seat rings
will be used for valves with Serial Numbers
AFTER
P191270-01.
For more information contact Dyna-Flo Control Valve Services.
