INSTALLATION, OPERATION AND MAINTENANCE
VSI AWWA C508 RUBBER FLAPPER CHECK VALVE
© 2014 VSI Waterworks LLC
VRSG-3
02-16
7
Sec. 6.5 Maintenance - Spring Return
The spring adjusting mechanism where all components are made of stainless steel and a Rubber Flapper
encapsulates a reinforcing plate. The Rubber Flapper Swing Check Valve requires no maintenance.
Sec. 6.6 Record Keeping
To carry out a meaningful inspection and maintenance program, it is essential that the location, make, type,
size, and date of installation of each valve be recorded. Depending on the type of record-keeping system used,
other information may be entered in the permanent record. When a Rubber Flapper Swing Check Valve is
inspected, an entry should be made in the permanent record indicating the date of inspection and condition of
the valve. If repair work is necessary, it should be indicated, and on completion of the work, the nature of the
repairs and date completed should be recorded.
SECTION 7: REPAIRS
Leakage, broken parts, hard operation, and other major defects should be corrected by a repair crew as soon
as possible after the defect has been reported. If repairs are to be performed in the field, the repair crews
should take a full complement of spare parts to the jobsite. Provisions should be made to isolate the defective
valve from water pressure and relieve internal trapped pressure prior to performing any corrective mainte-
nance. Disassembly of the valve should be performed in accordance with the procedure supplied by the manu-
facturer. After repair of the valve, the operating mechanism should be cycled through one complete operating
cycle. With full line pressure applied to the valve in the open position, an inspection should be made to detect
leakage in the areas around the cover, seals, and body-end connections. A record should be made to indicate
that the valve has been repaired and is in working condition. Any markings indicating that the valve is inoper-
able should be removed. In addition, the appropriate municipal departments should be informed of the satis-
factory repair of the valve.
