Flowserve BX2001 Durco - Manual (Page 10)

DURCO BX2001 USER INSTRUCTIONS ENGLISH 9-13
10
SEAt pAckAgE InStALLAtIon – FIrE SEALED 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 package 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
around the outside diameter of the PFA seat.
4. Place the fire sealed metal seat on the 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
fire sealed 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.
SECTION IV
SEAT REPLACEMENT (continued)
Retainer Ring
Retainer Ring
Locking O-Ring
Graphite
Gaskets
Seat Ring
PFA Seat
Fire Sealed
Metal Seat
Seat Energizer
Retainer Ring
Retainer Ring
Fastener
Graphite
Gaskets
Seat Ring
PFA Seat
Fire Sealed
Metal Seat
Seat Energizer
(DVENIM0390-02)-BX2001_update.indd 10 10/10/13 2:08 PM