172-65143M-04 (BB1N·BBF1N) 7 Oct 2021
11
Common Items for both Screwed and Flanged Models:
Part
During Disassembly
During Reassembly
During Inspections
Gasket
Remove the gasket
Replace with new gasket
—
Valve Seat
(Inlet Union Side)
Remove the valve seat
Replace with new valve
seat
—
O-ring
Remove the O-ring
Replace with new O-ring,
insert into the valve seat
—
Washer
Remove the washer
Reinsert the washer
Check for wear or
deformation
Belleville Washer
Remove the Belleville
washer
See the drawing below for
proper orientation of the
Belleville washer
Check for wear or
deformation
Ball
Remove the ball
Insert the ball
Check the sealing area
for scratches, wear, etc.
Valve Seat (Body
Side)
Remove the valve seat
Replace with new valve
seat
—
O-ring
Remove the O-ring
Replace with new O-ring
—
Washer
Remove the washer
Reinsert the washer
Check for wear or
deformation
Belleville Washer
Remove the Belleville
washer
See the drawing below for
proper orientation of the
Belleville washer
Check for wear or
deformation
Bushing
Remove the bushing
Replace with new bushing
—
NOTE: Clean, then check the inside of the body for scratches and erosion.