FLOWSEAL
3201 Walnut Avenue, Long Beach, CA 90807
562/426-2531
FAX 562/490-9546
2 to 8 25
10 to 12 35
14 to 20 50
24 to 30 75
36 to 48 100
Remove the handle or actuator and the mounting hard-
ware from the valve.
Remove the gland flange nuts and lockwashers.
Remove the gland flange and gland.
Replace the old packing with new packing. Correct
packing selection is important. On larger valves it may
be necessary to compress each stem seal into the
stuffing box before adding the next one.
Reinstall gland, gland flange, lockwashers and nuts.
Tighten the gland flange nuts evenly to torque specified
in Table 1.
Operate the disc several times.
Reinstall the handle or actuator and mounting hard-
ware.
Set the actuator stops.
MAINTENANCE INSTRUCTIONS
10
Packing Replacement
SECTION 3
Table 1
Remove the end cap bolts and lockwashers.
Rotate the end cap to break the seal, then pull the cap out.
Remove the old seal.
Clean the body and end cap prior to installing the new seal.
Slide the new seal into place, then guide the end cap into
the body.
Align the bolt holes and reinstall the lockwashers and bolts.
Tighten the bolts evenly to the torque specified in Table 2.
End Cap Seal Replacement
(where applicable)
Valve Size (in.) Torque (in-lb)
Be sure the line is depressurized and drained.
Be sure of the pipeline media. Proper care should be
taken for protection against toxic and/or flammable
fluids.
Never install the valve without an Operator (Manual or
Automatic) already attached to the valve shaft.
Never remove the Operator from the valve while the
valve is in the pipeline under pressure. Flowseal's
eccentric valve design may allow line pressure to open
the valve if the handle/actuator is not in place while the
valve is under pressure.
Always be sure that the disc is in the full-closed position
before removing or installing the valve.
Take care in handling the valve. Personal injury or
property damage may result if the valve is damaged or
mishandled during maintenance operations.
Before removing the valve from the line or loosening any
bolts, it is important to verify the following conditions:
Safety Precautions
1.
2.
3.
4.
5.
6.
General Maintenance
Normal maintenance for a Flowseal HPBFV is limited to
adjustment of the shaft packing by tightening down evenly
on the gland flange using the gland flange studs and nuts.
Overtightening of the gland should be avoided since this will
shorten the life of the packing. During commissioning, it is
common for dirt and foreign objects to be left in the pipeline
during construction. This debris can damage the HPBV seat
or disc edge which will prevent the valve from providing tight
shut-off. In such cases seat replacement may be necessary.
1.
2.
3.
4.
5.
6.
7.
Standard Soft Seat Replacement
Place the valve on a bench with the seat retainer facing up.
Use blocks to elevate the valve above the work surface to
provide enough clearance to prevent the disc from being
damaged when the valve is opened.
(a) Cap Screw Retainer:
Remove the cap screws and lift the seat retainer
out of the valve.
(b) Wedge Ring Retainer:
Unlock the retainer by removing the set screws.
If difficulty is experienced in removing the retainer,
open the disc approximately 20 degrees and then
tap the retainer with a non-metallic hammer. Lift the
retainer from the body.
Remove the old seat from the seat retainer and discard.
Thoroughly clean the seat cavity in the body and the seat
retainer prior to installing a new seat.
Table 2
2 to 8 50
10 to 12 80
14 to 30 100
Valve Size (in.) Torque (in-lb)
1.
2.
3.
4.
1.
2.
3.
4.
5.
6.
7.
8.
9.
