9
Installation, Operation and Maintenance Manual
D I S T R I B U T E D V A L V E S
Routine Maintenance
Because of the simple design and operation, the
WKM MA High Performance Butterfly
Valve requires virtually no maintenance.
Its non-lubricated construction and protected seat
design provides reliable leak free performance
without routine servicing.
DynaCentric
The only preventative maintenance recommended for
the valve is to periodically inspect for leaks around
the stem packing. Should a leak appear, the packing
can be adjusted by tightening the gland retainer nuts
slightly. Avoid excessive tightening which may result
in excessive valve torque or premature packing wear.
Troubleshooting
Trouble Probable Cause Remedy
The seat and/or disc is worn or Replace worn parts.*
damaged.
Foreign matter is present between Operate several times to wipe clean.
seat and disc.
Operator stops are not set properly. Adjust stops to proper setting.
Build up of solids or roughness on Operate several times to wipe clean or
edge of disc. disassemble valve and clean disc edge.*
Stem packing is too tight. Tighten packing only sufficiently to stop leaks.
Operator is not installed properly. Reinstall operator in proper alignment with
valve stem.
Disc hits on side of pipe. Check for proper pipe clearance.
Seat retainer screws are not tight. Tighten seat retainer screws.
Body gasket is damaged. Replace body gasket.*
(FO and MO seats only)
Seat is damaged Replace seat.
Gland nuts are loose. Tighten gland nuts.
Packing is damaged or worn. Replace packing.
Handle or actuator does not provide Restrain handle or actuator when in
proper restraint. static position.
The valve is
leaking around
stem.
The valve will
not seal properly.
The valve is
hard to operate.
The valve
will not open.
The valve leaks
between body
and seat retainer.
* Contact your Cameron representative for technical information or repair manual.
Additional information is also available on-line at www.c-a-m.com
The valve opens
and closes with
line flow.
WKM-MA-HPBV-IOM
To Next Page