4 GV 76 en
7
Clean the body gasket surface.
Insert a new seat gasket (63) and the seat ring (7) &
diffuser (81) kit into the body.
Install the cage (15), seal ring (64), cage guide (16)
and plug stem assembly (3, 5, 6) very carefully.
Insert the body gasket (65 & 65a).
Mount the bonnet on the body carefully maintaining
alignment with the plug and the stem and with the
retainer (or cage) in the closed position, so that the
bonnet position in relation to the body is the same
as the original position.
Insert the hexagon nuts (17) into stud (13) and
slightly fasten the nuts.
Insert the packing rings (69) according to above 4.3
Tighten hexagon nuts (17) until plug and seat con-
tact is obtained with proper bolt torque.
Fig. 8
Omega quick change, Standard balanced trim
Fig. 9
Pilot Omega-balanced trim
4.5
Pilot Plug
Disassembly & Assembly
Mount the plug and stem assembly on the chuck to
setting.
Remove the pilot wire (76).
Remove the pilot bolts (75).
Remove the pilot cover (74).
Remove the pilot plug (73) and pilot stem (72) from
pilot main plug (71).
Remove the pilot spring (77) carefully.
Remove the pilot plug (73) and the pilot seat as well
as the surface inside of the pilot main plug (71). If
there is damage, scratches or grooves, it should be
replaced or repaired.
Insert the cleaned pilot spring (77) into the upper
side of main plug.
Install the pilot plug (73) & pilot stem (72) on the
spring (77).
Install the pilot cover (74) and fasten the pilot bolts
(75) keep in balance.
Install wire (76) for connecting the all pilot bolts due
to prevent loose on operation.
4.6
Spray Nozzle
Disassembly & Assembly
Remove the (Spray to Spray) hexagon nuts (87a).
Remove the spray cover (84).
Remove the spray gasket (86).
CAUTION:
Do not reuse the spiral wound gaskets (63 & 65 & 65a),
this is need to be replace each time the valve is disas-
sembled.
CAUTION:
Do not strongly tighten stud nuts at this time
CAUTION:
The all related parts (seat ring, retainer, cage, plug &
stem, bonnet) must be properly aligned in the body.
CAUTION:
Make sure to balance when loose the pilot bolts, and
be careful the spring tension to bounced off the pilot
plug and stem.
