RESILIENT-SEATED CARTRIDGE STYLE
FNW7XX
BUTTERFLY VALVE
INSTALLATION INSTRUCTIONS
FNW.COM
We reserve the right to modify or improve the designs or
specifications of our products at any time without notice.
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5. STORAGE
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Storage condition is very important to prevent degradation in performance, contamination and discoloration and material deterioration.
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The valves must be stored in a dry environment with no dust or water droplets, while avoiding direct sunlight, low and high temperatures
and humidity. Protect valves from temperature extremes and possibility of damage. Recommend to store indoors in room temperature
range with humidity 60% or less without removing the bubble wrap & carton box packaging or the protective material attached to
the valve.
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High humidity may reduce the strength of the carton box and the packaging may be broken, which may result in damage of the product.
Be careful not to get the packing wet.
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If the valves are to be stored long-term, they should be operated open/close once every three months.
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The valve body is made from epoxy-coated cast iron, ductile iron or stainless steel and rust can appear on inside surface. This will not
affect valve performance. Special care should be taken to prevent damage to the disc edge and sealing surface.
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Do not drop, overturn, or vibrate the valve and do not apply a heavy load to the product during storage.
6. PRE-INSTALLATION
The following should be read and understood prior to the installation of the valve.
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Determine valve orientation. The valve is bi-directional shut-off and can be installed in any position or direction. The normal installation
position is with the valve stem in the vertical position and the actuator mounted vertically directly above the valve. However, valves in
elevated positions with gear operator and chain wheels should be installed with the valve stem pointing down so that the open/close
position indicator is visible from the ground and chain hangs freely, clearing the pipe. For the slurries, sludge, mine tailing, pulp stock,
dry cement and any media with sediment or particles, we recommend the resilient seated with the stem in the horizontal position with
the lower disc edge opening in the down steam direction.
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Dry service conditions, including vacuum service, will result in higher torques and seat wear.
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The standard cartridge style does not require flange gaskets, nor are they recommended for installation. The valve has an integral
sealing on the face of the seat.
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Prior to installation, make sure that levers, gear operators, and actuators are properly installed and that the stops are properly set for
open and close positions.
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Before installing the valve, ensure that the lever or gear operator is installed such that the position indication matches the position of
the valve disc. For lever operated valve, the lever should be in parallel with the disc. For gear operated valves, the dial indicator on the
gear should match the position of the valve disc.
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Before installing the valve, inspect the valve body port and associated equipment for any damage that may have occurred and for any
foreign matter that may have collected in shipping or storage. Make certain the body interior is clean and that the seat facings and disc
edge surface are undamaged.
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Make sure the valve rating & materials are sufficient for the service which the valve will be installed for.
WARNING:
Personal injury or property damage may result if the valve is installed where service conditions could exceed the valve ratings.