Flowserve BX2001 Durco - Manual (Page 11)

DURCO BX2001 USER INSTRUCTIONS ENGLISH 9-13
11
SEAt pAckAgE InStALLAtIon – ApEx cLASS Iv MEtAL
SEAtED vALvE
1. Make certain the valve disc is fully closed and place one
of the 3 graphite gaskets into the seat pocket of the
valve body. Note: If the repair kit contains one wide and
2 narrow gaskets, use the narrow gaskets first and use
the wide gaskets for Step 5.
2. Place the seat ring in the valve body seat pocket. For
valves with seat rings with an angled face, place the
angled face side of the seat down against the seat pocket
in the valve body.
3. Place a second graphite gasket on the top of the seat
package, making certain it is centered so that it fits into
the groove around the outside diameter of the seat ring.
4. Place the APEX metal seat on the seat package,
orientated so that the inside metal lip is facing away
from the valve disc. Make certain that the inside lip is
centered to the valve disc.
5. Some styles of retainer rings have a machined groove
for this gasket. For these styles, use a small amount
of adhesive and glue the gasket into the groove of the
retainer ring. For styles without the machined gasket
groove, place the third graphite gasket on top of the
APEX metal seat, making certain that it is centered to the
diameter of the seat.
6. For valves that use retainer ring fasteners, place the
retainer ring on the valve body and line up the fastener
holes. Using a press or “C” clamps, firmly press the
retainer ring onto the valve body to compress the seat
package. Insert and tighten the fasteners in a criss-cross
pattern to 180 in-lbs (20 Nm).
7. For valves that use an O-ring retainer locking ring, place
the new O-ring into the outside groove of the retainer
ring. Apply a light coat of lubricant on the O-ring and
place the retainer ring on the body. Using a press or “C”
clamps, firmly press the retainer ring into the valve body.
8. For valves that use a wire retainer locking ring, place the
retainer ring into the valve body seat pocket. Thread the
wire through the slot in the valve body and rotate the
retainer ring to pull the wire through the valve body until
both ends of the wire extend through the slot. Bend each
end of the wire back to lock the wire in place. Trim off
extra wire length and tack weld each to the valve body.
SECTION IV
SEAT REPLACEMENT (continued)
Retainer Ring
Retainer Ring
Locking O-Ring
Graphite
Gaskets
Seat Ring
APEX Class IV
Metal Seat
Retainer Ring
Retainer Ring
Locking Wire
Graphite
Gaskets
Seat Ring
APEX Class IV
Metal Seat
Retainer Ring
Retainer Ring
Fastener
Graphite
Gaskets
Seat Ring
APEX Class IV
Metal Seat
Design from
+400˚F (204˚C)
or More
Design to
+400˚F (204˚C)
or Less
(DVENIM0390-02)-BX2001_update.indd 11 10/10/13 2:08 PM