KEYSTONE BUTTERFLY VALVES PARASEAL
InstallatIon and maIntenance InstructIons
Before installation these instructions must be fully read and understood
Please read these instructions carefully
Hazard potentials:
• disregarding of instructions
• improper use of product
• insufficiently qualified personnel
Valve application to be within the pressure/
temperature limits indicated in the P/T diagram.
Essential points and functions of the valve
should be inspected on a regular basis.
1 STORAGE AND HANDLING
1.1 Protection
Keystone butterfly valves are delivered with
protection in accordance with the Keystone
Engineering Instructions, 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.
1.2 Storage
When valves are to be stored for some time
(2months or more) before being fitted,
storageshould be in the original delivery
cratesor cases.
1.2.1 Storage conditions
The valves should be stored off the ground
inaclean, dry indoor area.
Protect the valve from temperature and
humidity extremes, and exposure to excessive
dust, moisture, vibration, deformations,
sunlight and ozone.
Recommendations
1. Temperature: storage temperature below
25°C, above 0°C preferable below 15°C.
2. Humidity: storage conditions should be such
that condensation does not occur, store in
a dry environment. Maximal 50% relative
humidity.
3. Light: valve rubbers should be protected
from light, in particular direct sunlight or
strong artificial light with high ultra violet.
4. Ozone: storage rooms should not
contain any equipment generating ozone.
E.g.lamps, electric motors.
IMPORTANT
Before valves are being installed or used
thefollowing actions are recommended.
1. Valves/parts have to be inspected and
thoroughly cleaned if required.
2. Rubber parts need to be greased with silicone
grease if not present anymore.
3. All surfaces in contact with seats have to be
thoroughly cleaned and greased with silicone
grease if stored for more than 5 months.
1.3 Handling
1.3.1 Packed valves
Lifting and handling of the packed valves in
crates should be carried out by appropriate
lifting equipment. If a fork lift truck is used,
appropriate fork hitches are required.
The lifting and handling of packed valves in
cases will be carried out in the lifting points.
The transportation of all packed material
should be carried out safely and according
thelocal safety regulations.
1.3.2 Unpacked valves
The lifting and the handling of these valves has
to be carried out by using appropriate means
and by respecting the carrying limits. The
handling must, preferably, be carried out on
pallets, protecting the machined surfaces and
seat to avoid damage.
When lifting the large dimension valves, the
sling and the hooking of the load must be
carried out by using the appropriate tools
(brackets, hook, fasteners) and load balancing
tools in order to prevent the valves from falling
or moving during the lifting and handling.
The valve may be lifted only by slings attached
to the flange holes or valve body; never to the
actuator or the valve opening.
Emerson.com/FinalControl
© 2017 Emerson. All Rights Reserved. VCIOM-00770-EN 17/10
KEYSTONE BUTTERFLY VALVES PARASEAL
InstallatIon and maIntenance InstructIons
2 INSTALLATION
WARNING
For safety reasons, it is important to take the
following precautions before you start work on
the valve:
1.
Personnel making any adjustments to the valves
should utilize suitable equipment. All required
personal protection means should be worn.
2. The line must be depressurized before
installing the valve.
3. Personnel trained in all aspects of manual and
mechanical handling techniques only must
carry out handling of the valves.
4. Misuse of the valve is not allowed. For
example: the valve, handles, actuators or other
parts may not be used as ‘climbing tools’.
5.
Ensure that valve pressure/temperature
limitations marked on the identification tag are
within the service conditions. The trim number
on the valve’s tagplate identifies the valve
materials. See Product Manual for valve specific
P/T diagram and trim number definition.
6. Ensure that valve materials are compatible
with the pipeline fluid.
2.1 Valve inspection
1. Carefully remove the valve from the
shipping package (box or pallet) avoiding any
damage to the valve or, in case of automated
valves, to the electric or pneumatic/
hydraulic actuator or instrumentation.
2. Confirm that the materials of construction
listed on the valve nameplate are
appropriate for the service intended and are
as specified.
3. It is not allowed to use third party spare
parts. In case of third party spare parts,
safeoperation is not guaranteed.
2.2 Flange and pipe compatibility
Check matching of flange drilling pattern of
valve and pipe flange before assembly.
Flanges have to meet the following
requirements:
- The face inside diameter should be:
D min. : The valve Q-dimension + adequate
disc clearance.
D max.: The inside diameter (ID) of standard
pipe for the nominal size ISO4200.
For larger inside pipe diameters
contact factory.
- If the flange (or pipe) is provided with a
raised face, the diameter of this shall be at
least 10mm larger than the YY-dimension
of the valve.
- The use of the flange gaskets is not allowed
since it might damage the valve.
- The Keystone seat face design eliminates
the need for the gaskets.
- Use flange bolting in agreement with
appropriate standard.
Do not use flange gaskets!
2.3 Valve installation
The valves are bi-directional and may be fitted
in either direction relative to the flow. The valve
will control flow equally in either direction. The
recommended installation position is shaft
horizontal and the lower disc edge opening
down-stream. (Especially for slurry service
and media with a tendency for sedimentation).
For optimum valve control and smooth
performance, it is recommended to have a
10to 20 pipe diameters of straight run inlet
piping and 3 to 5 pipe diameters straight outlet
piping. A valve is no crow-bar. Do not use the
valve to spread the flanges. Seat damage might
be theresult.
YY
D max./min.
Q
2
Loading...