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INSTALLATION, OPERATION AND INSPECTION
Series 7700-LW AWWA C508 Swing Check Valve for Waterworks Service
GENERAL
All valves should be inspected at time of delivery for shipping damage and to
confirm compliance with specifications. Whenever possible the valves and all
apparatus should be protected from the weather. Water and debris should not
collect in the valve.
Note: These instructions are guidelines for use by experienced piping and
mechanical personnel.
TOOLS AND EQUIPMENT
Warning: Valves are to be handled by experienced installers. They should never
be used as structural members and should be appropriately rigged for lifting.
Valves are heavy and include various accessories, which should be handled with
caution.
Standard box wrenches
Packing puller
Pin drivers
Packing cutter
Ball peen hammer
Chain hoist
Rigging equipment
LAYOUT AND SITING
UNITED 7700 Swing Check Valves may be installed in horizontal pipe-work and
vertical pipe-work if the flow is in an upwards direction. Valves must be provided
with adequate support. Adjoining pipe-work must be supported to avoid the
imposition of pipeline strains on the valve body. Heavy valves may need
independent support or anchorage.
Note: Check valves must not be installed in vertical pipe-work with the flow in the
downwards direction.
Содержание 7700 Series
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