Flowserve McCANNA CryoSeal Ball Valves - Manual (Page 11)

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McCANNA CryoSeal ® Ball Valves FCD MMENIM2007-01-AQ – 04/15
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Refer to CryoSeal Parts Identification (Figure 3) for this section.
NOTE: Lubricating this valve during assembly is recommended as described in preceding steps 4.2.3
and 4.2.4 Assembly will be easier, the valve operating torque will be lower, and the valve seal will be
tighter. The lubricant selected must be compatible with the intended valve service. It is also possible to
assemble without the use of lubricants if required by the service conditions.
Standard valves
5.1 Install adjuster studs into the top of the bonnet. Anti-seize lubricant is suggested to be applied
to the threads. These are the holes located closest to the packing bore. Depending on valve size
there will be 2 or 4 adjuster studs.
5.2 Lightly lubricate the area of the stem that will be in contact with the O-rings and stem seals.
Also lubricate the O-rings and stem seals. This should be a very light layer of lubrication.
5.3 Install the lip seal into the packing bore at the top of the bonnet. The o-ring shall be at the top of
the lip seal. See Figure 4 for correct orientation.
5.4 Install packing into packing bore. Install bottom rope first, then each additional piece as it was
stacked up. If there are cuts present in the graphoil rings, these cuts are to be placed 180°
apart. Install top packing rope.
5
Reassembly
Figure 4. Stem Seal Assembly