Keystone
Butterfly valves Paraseal
InstallatIon and maIntenance InstructIons
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
(2 months or more) before being fitted,
storage should be in the original delivery
crates or cases.
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.
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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
the local safety regulations.
imPortant
Before valves are being installed or used
the following 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.
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.
1.2.1 Storage conditions
the valves should be stored off the ground
in a clean, dry indoor area.
Protect the valve from temperature and
humidity extremes, and exposure to excessive
dust, moisture, vibration, deformations,
sunlight and ozone.
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.
Before installation these instructions must be fully read and understood
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VCiom-00770-en 17/10
