Flowserve BX2001 Durco - Manual (Page 9)

DURCO BX2001 USER INSTRUCTIONS ENGLISH 9-13
9
SEAt pAckAgE InStALLAtIon – StAnDArD vALvE
1. Make certain the valve disc is fully closed and 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.
2. 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). Note: For end-of-line
BX2L4 or BX2L9 lug valves, tighten fasteners to
120 in-lbs (14 Nm).
3. 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.
Retainer Ring
Retainer Ring
Locking O-Ring
Seat Ring
PFA Seat
Seat Energizer
Retainer Ring
Retainer Ring
Fastener
Seat Ring
PFA Seat
Seat Energizer
Retainer Ring
Retainer Ring
O-Ring
Retainer Ring
Fastener
Seat Ring
PFA Seat
Seat Energizer
End of Line
BX2L4 and BX2L9
Retainer Ring
Retainer Ring
Locking O-Ring
UHMWPE Seat
SECTION IV
SEAT REPLACEMENT (continued)
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