Keystone Manual: Model Winn HiSeal High Performance Butterfly Valves, Keystone-EN Manuals & Guides

KEYSTONE MODEL WINN HISEAL HIGH PERFORMANCE BUTTERFLY VALVES

OperatiOn, installatiOn and maintenance instructiOns

Before installation these instructions must be fully read and understood

1 STORAGE/SELECTION/PROTECTION

Storage

When valves are to be stored for some time
before being fitted, storage should be in
theoriginal delivery crates with any waterproof
lining and/or desiccant remaining in place.
Storage should be off the ground in a clean, dry
indoor area. If storage is for a period exceeding
six months the desiccant bags (if supplied)
should be changed at this interval.

Selection

Ensure that the materials of construction
and pressure/temperature limits shown on
thevalve identification label, are suitable for
the process fluid and conditions. If in doubt,
contact the factory.

Protection

Keystone Butterfly valves are delivered
with protection according to customer’s
specification, or in accordance with the Quality
Manual, to protect the valve seats and disc from
damage.
Wrapping and/or covers should be left in place
until immediately before fitting to the pipe.

2 INSTALLATION

1. Ensure that mating flanges and gaskets are
clean and undamaged.

2. Remove protective covers from valve faces.

3. With the valve in the closed position, fitinto
pipework tightening the flange bolts in a
diagonal pattern.

Refer to the following notes regarding

theindividual valve body type.

a. Wafer design
The wafer design is intended for

sandwiching between two pipe flanges
by means of through bolting. The body
incorporates locating holes or lugs to
enable the valve to be positioned centrally in
the pipeline thus ensuring the disc does not
foul when opening.

b. Lugged design
The lugged configuration facilitates

independent bolting of the valve to either
the upstream or downstream flanges and
is fully rated for end-of-line applications.

Centralization of the valve to the pipework
is more readily achieved than with the
wafer type, however care should be taken
to ensure that the disc does not foul the
mating flange or pipework when opening the

valve.
c. Double flange design
As Lugged design above.

NOTE

a. Keystone Winn HiSeal valves are bi-directional and

may be fitted either direction relative to the flow.
b. Installation may be carried out with shaft displaced

through any angle permitted by the bolting.

3 ROUTINE MAINTENANCE AND
OPERATIONAL SPARES

Routine maintenance

No routine maintenance is required other
than periodic inspection to ensure satisfactory
operation and sealing.
Any sign of leakage from the gland packing
should be addressed immediately by tightening
the gland nuts gradually and evenly. If no
further adjustment is possible the packing
should be renewed by following instructions in
paragraph 4.1.

Spare parts

Keystone valves are identified by a figure
number, which is stamped on the identification
plate, located on the valve body yoke. This
reference should be quoted in respect of any
after sales queries, spare parts or repair
enquiries/orders.

Two year operational spares

Soft Goods Kits only, are recommended for the
first two years of operation, as follows:

Soft-seated and Firesafe valves

• 1 Seat ring

• 2 Body gaskets

• 1 Set of gland packing

Metal-seated valves

• 1 Metal seat ring

• 2 Body gaskets

• 1 Set of gland packing
The number of kits required will
be recommended by our Technical
Sales department on request.

Other metallic components are not normally
replaced in theinitial 2 year period. Any
damage to metallic components such as
retaining ring, metal seat (seat energizer) or
disc may necessitate replacement of additional
components.
Consult Technical Sales department for advice.

Emerson.com/FinalControl VCIOM-01737-EN 18/02© 2017 Emerson. All Rights Reserved.

KEYSTONE MODEL WINN HISEAL HIGH PERFORMANCE BUTTERFLY VALVES

OperatiOn, installatiOn and maintenance instructiOns

4 MAINTENANCE

CAUTION

Before attempting any maintenance, ensure
that the system has been depressurized and
ifnecessary, drained of any dangerous fluid.

Parts identification

The illustrations on page 5 show the parts
comprising Firesafe and Soft Seated valves.
Either type is available with wafer, lugged or
double flanged body.

4.1 Replacement of gland packing

If further adjustment of the gland packing is
inappropriate, adopt the following procedure
for its removal and replacement.

1. Remove the operator (lever, gearbox or
actuator) in accordance with Instructions in
paragraph4.5.

2. a. Remove key from shaft.

b. Remove gland nuts (16).
c. Remove gland follower flange (14).
d. Remove gland follower (13).
e. Remove gland packing rings (12) using a

pointed instrument.

3. a. Fit new gland packing rings (12).

b. Refit gland follower (13).
c. Refit gland follower flange (14).
d. Refit gland nuts (16) tightening evenly

until heavy resistance is felt. During this
operation turn the stem to ensure that the
packing is not overtightened.

4. Refit the operator (see paragraph 4.5).

4.3 Replacement of shaft bearings

Removal

1. Remove operator in accordance with
theprocedure detailed in paragraph 4.5.

2. Remove the Gland Packing in accordance
with the procedure detailed in paragraph 4.1.

3. Remove the seat assembly, in accordance
with paragraph 4.2.

OR
Seat assembly may retain is situ to prevent

accidental damage.

4. With the disc in the fully open position and
its weight supported;

a. Drive out the disc retention pins

(spiral or taper)(7) using a punch.
b. Withdraw the shaft (3) from the body.
c. Remove the disc through the back face of

the valve body.

5. The bearings (9) / (10) are now exposed and

may be removed.

Refitting

1. Clean out bearing cavities and fit new

bearings.

2. Re-introduce the disc into the body in the

open attitude through the back face and
support its weight.

3. Refit the shaft ensuing that the shaft key-

way is on the same side as the disc Stop.

4. Refit the disc pins.

5. Reassemble gland assembly

(seeparagraph4.1).

6. Refit seat assembly (see paragraph 4.2).

7. Refit operator (see paragraph 4.5)

4.2 Replacement of valve seats

Firesafe and soft seated valves

1. Remove retaining ring (4) in accordance with
procedure described in paragraph 4.4.

2. a. Remove first body gasket (11).

b. Remove metal seal or energizer (5).
c. Remove second body gasket (11).
d. Remove PTFE seat (6).
If the seat is tight move the disc to the open

position and, if still tight, gently drive the
seat out of its housing from the back face of
the valve using a smooth blunt instrument.

3. Ensure that all components are clean.

Position the disc in the closed position.

4. Refit all components by reversing the steps
shown in (2) above.

NOTE

The body gaskets of lugged valves require holes for
cap screws pressing in on assembly.

Metal seat valves

Follow the above instructions, ignoring
reference to soft seats.

2