Vag GA Industries FIGURE 200, Инструкция по установке, эксплуатации и обслуживанию

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Figure 200 Rubber Flapper Check Valve
INTRODUCTION
This manual will provide the information to
properly install, operate and maintain the valve
to ensure a long service life. The GA Industries
Figure 200 Rubber Flapper Check Valve is
designed to provide years of dependable
operation. This manual will provide you with the
information needed to properly install and
maintain the valve and to ensure a long service
life.
The valve is of the swing check type utilizing an
angled seat and fully encapsulated, resilient
disc. It opens to allow fluid flow in the forward
direction and closes automatically to prevent
flow in the reverse direction.
The Figure 200 can handle a wide range of
fluids including those containing suspended
solids. The valve
’ s size, flow direction,
maximum working pressure, and series number
are cast on the valve body or stamped on the
nameplate.
CAUTION
Do not use valve for line testing at pressures
higher than nameplate rating or damage to valve
may occur.
Th
e “Maximum Working Pressure” is the non -
shock pressure rating of the valve at 150˚ F. The
valve is not intended as an isolation valve for
line testing at pressures higher than the valve
rating.
RECEIVING AND STORAGE
Inspect valves upon receipt for damage in
shipment. Unload all valves carefully to the
ground without dropping. Do not allow lifting
slings or chains to contact the backflow actuator
or visual position indicator (if provided). Use
eye bolts or rods through flange bolt holes to lift
large valves.
Valves should remain crated, clean and dry until
installed to avoid weather related damage. For
storage longer than six months, apply a thin coat
of approved lubricant to the flexible disc.
Do not remove flange protectors until ready to
install or expose flexible disc to sunlight or
ozone for an extended period.
DESCRIPTION OF OPERATION
The valve is designed to automatically prevent
reverse flow. During forward flow conditions, the
movement of the fluid forces the disc to the open
position allowing 100% unrestricted flow area
through the valve. Upon flow reversal, the disc
automatically returns to the closed position to
prevent
reverse flow.
Figure 1
VALVE CONSTRUCTION
The standard GA Industries Figure 200 Rubber
Flapper Check Valve is constructed of rugged
ductile iron with a reinforced rubber flexible disc.
See the specific Materials List submitted for the
order if other than standard construction. The
disc is the only moving part assuring long life
with minimal maintenance. The body (1) is
flanged for connection to the pipeline with an
Item Description Standard Material
1 Body Ductile Iron
2 Cover Ductile Iron
3 Flexible Disc Buna-N Rubber Encapsulated Steel
4 Gasket Buna-N
5 Cover Bolt Stainless Steel