Bray TRI LOK, Руководство по эксплуатации и обслуживанию

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6
BRAY Tri Lok Triple Offset Valve
Operation and Maintenance Manual
4.3 b
ody
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eplaceMent
:
Refer to the parts diagram for parts identiication by
reference numbers in parentheses. ( Pg. 13 )
Bray recommends that both the body seat (8) and
the disc seal ring (13) be replaced at the same time.
However, individual components are not matched
in pairs and can be replaced separately if desired.
CAUTION
Exercise extra care when handling the body seat
and disc seal ring to avoid damage to the sealing
areas.
Close the valve and remove the operator or actua- 1.
tor as applicable. Place the valve on a lat stable
surface, with the body seat (8) facing up.
Carefully clean the surface of the body seat and 2.
remove all foreign matter from the hex sockets
of the seat retaining cap screws (9). Blow out the
gap between the body seat OD and the wall of the
retaining cavity in valve body (6). Apply a suitable
penetrant (WD40, etc.) into the gap between the
body seat OD (8) and the body (6) to help in extract-
ing of the body seat (8) from the body cavity.
Using a suitable wrench, remove all body seat 3.
retaining socket cap screws (9).
Using a hard wood or aluminum drift and a light 4.
hammer, tap the top of the body seat (8) lightly
all around to loosen the body seat in the retaining
cavity.
Using full-threaded bolts or suitable threaded 5.
rod matched to the threads in all tapped jacking
holes, commence jacking the body seat (8) evenly
out from the retaining cavity. Tap the body seat
lightly with the drift as necessary to keep it in
alignment with the walls of the retaining cavity
in the body (6) while jacking. Remove the body
seat (8) from the body (6).
Table 3 lists the thread sizes of jacking bolts for
individual valve sizes. ( Pg. 9 )
Using soft tools and suitable wire brush, care- 6.
fully clean any remnants of old gasket and
foreign matter within the retaining cavity. Blow
out all threaded holes and gasket grooves with
compressed air.
Remove the disc seal ring retaining screws (10) 7.
and lock washers (11) from the disc seal ring re-
tainer (12). Remove the disc seal ring retainer (12).
If the old disc seal ring (13) is to be reinstalled,
extract it carefully. Wipe the disc seal ring (13)
clean, removing all remnants of old gasket and
foreign matter. Place the old disc seal ring (13)
aside for reinstallation (if not replacing the disc
seal ring with a new one).
Using soft tools and suitable wire brush, carefully 8.
clean any remnants of old gasket and foreign
matter from the face of the disc (15). Blow out
all threaded holes and the gasket groove with
compressed air.
Place a new disc gasket (14) into the groove on 9.
the disc face (15). The mating side of the disc
gasket can be lightly sprayed with adhesive to
improve retention in the groove. Place the disc
seal ring (13) onto the disc, making sure the
alignment line on the disc seal ring matches the
locating dimple in the disc face. Place the disc
seal retainer (12) over the disc seal ring. Apply
anti-seize compound to the disc seal ring retaining
cap screws (10). Install all disc seal ring retain-
ing cap screws (10) with lock washers (11). The
disc seal retaining cap screws (10) should to be
fully threaded into the disc (15), but remain only
inger-tight at this time.
Place the body seat gasket (7) into the groove 10.
in the body seat (8). It is highly recommended
to apply a light ilm of spray adhesive to the
mating side of the body seat gasket to secure its
position in the groove. Apply a suitable lubricant
to the sealing surfaces of the body seat (8) and
disc seal ring (13). Insert the body seat (8) into
the body (6) over the disc seal ring (13), mak-
ing sure the alignment dimples in the body seat
(8) and the retaining cavity in the body (6) both
!