Reassembly; Standard Valves; Figure 4: Exploded View - Flowserve McCANNA User Instructions

Handle Retainer Nut
Handle
Stem Nut
Travel Stop
Gland Ring
Upper Stem Seals
Grounding Washer
(where applicable)
Bonnet
Lower Stem Seals
Stem
Bonnet Gasket
Spring
Ball
Bonnet Studs
Body
McCANNA SEAL
(Typical Manually Operated Configuration)
4.2.3 Lubrication of valve parts to aid assembly and initial operation
is recommended, when permitted by service and operating
conditions. The lubricant used must be compatible with the
intended service (see Table 1 for recommended lubricants).
If necessary, valve internal wetted parts may be assembled
without lubrication.
4.2.4 Lubricants are to be applied sparingly; a thin wipe is sufficient.
Ensure no foreign material, like brush bristles, are left on the
pads. Excessive lubricant on the ball, seat or in the stem bore
can affect valve performance and should be removed from
the valve. If lubricant build­up or caking is visible on the ball
or seats, too much has been used.
5

REASSEMBLY

Reassembly Instructions
Refer to Parts Identification (Figure 4) for this section.
McCANNA User Instructions Top-Entry Valve – MMENIM2007-10-4/16 A4
™
Bonnet Nuts
Stop Pin
Stem key
Seat Ring
(all except
G, M, & L seats.)
Upper thrust washer
Upper trunnion bearing
Seat
Seat back seal
Bonnet studs

Figure 4: Exploded view

5.1
5.1.1
5.1.2
5.1.3
Seat
Body
McCANNA TMBV
(Typical Actuated Configuration)
NOTE: Lubricating this valve during assembly is recom­
mended. 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

Lightly lubricate the stem. For McCANNA SEAL lubricate the
stem seals.
Slide the correct number of stem seals for the lower location
(see Table 2 on page 9) on the stem to the shoulder. Plastic
stem seals are made in a conical or "dished" shape for better
sealing. The lower seals should be installed on the stem with
the "dished" sides facing upward (see Figure 5 on page 9).
Flexible graphite stem seals are not sided, and may be instal­
led either side up.
Adjuster nuts
Adjuster belleville washers
Adjusted flange
Packing gland
Stem packing
Grounding washer
Bonnet nuts
Adjuster studs
Bonnet
Stem
Bonnet gasket
Ball
Lower thrust washer
Lower trunnion bearing
7
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