Bray TRI LOK, Руководство по эксплуатации и обслуживанию

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10
BRAY Tri Lok Triple Offset Valve
Operation and Maintenance Manual
Remove all remaining gaskets and stem seals 9.
that have not dislodged during the previous
disassembly. These items are: bearing gaskets
(4), plug gasket (2), disc seal ring gasket (14)
and body seat gasket (7).
Clean all individual items as required for 10.
reassembly.
6.0 v
alve
a
sseMbly
:
When reassembling the Tri Lok valve, all gaskets,
packing, and seals should be new. Cap screws can
be reused if in good condition, but Bray recom-
mends that all lock washers be renewed.
CAUTION
Exercise extra care when handling the body seat
and disc seal ring to avoid damage to the sealing
areas.
Make sure the gasket faces on both sides of the
valve body (6) are protected from scratching and
other damage when handling the valve body (6).
Assembly is essentially the reverse of disassembly
with the following notable points:
The alignment of the driving lats or keyway
1.
of the splined stem (5) with respect to the disc
face (15) must be such that the disc face (15) is
rotationally about two to three degrees ahead
of the splined stem (5) in clockwise direction
when viewed from top. This ensures that the
disc seal ring (13) lodges into the body seat (8)
before the valve operator or actuator reaches
90 degrees travel. Use anti-seize compound
in the splined connection between the splined
stem (5) and the disc (15).
Both bearings (3) should be installed after 2.
the disc (15) and splined stem (5) have been
placed in the valve body (6). Spray lubricant
on the ends of the splined stem (5) and care-
fully thread the bearing gaskets (4) onto the
splined stem (5) ends. Slide the upper bearing
(3) over the end of the splined stem (5) push-
ing the bearing gasket (4) along the splined
stem (5). Make sure the bearing gasket (4)
does not hang on the lats of the splined stem
(5) (or keyway as applicable). Gently push
the upper bearing (3) into the body cavity (6).
Repeat the procedure, very carefully, when
installing the lower bearing (3).
Use liberal amount of lubricant on the sealing 3.
surfaces of the disc seal ring (13) and the body
seat (8) when inalizing the alignment of these
parts.
Test the valve. 4.
Recommended lubricant for valve components 5.
during valve assembly and/or disassembly are
as follows:
!
Valve Component Lubricant
Bearing Area & Shaft
Machined Surfaces
Light Spray
Threaded Connections Anti-Seize
Seat/Seal Contact
Surfaces Dry Graphite
Spray