Val-Matic 1/2-3 Well Service Air Valve With Dual Port Throttling Device - Manual (Page 5)

MAINTENANCE
The Well Service Air Valve requires no
scheduled lubrication or maintenance.
INSPECTION: Periodic inspection for leakage
can be performed. Observe leakage from the air
valve discharge pipe just after the pump has
started see that there is no continuous leakage
of water. An initial burst or spray of water from
the valve when it closes is common but the
valve should then provide tight shutoff while the
pump is running. If leakage occurs, the valve
should be removed and inspected for wear or
possible damage from foreign matter.
WARNING: The valve must be drained
before removing the cover or pressure may be
released causing bodily harm.
TROUBLESHOOTING
Several problems and solutions are presented
below to assist you in troubleshooting the valve
assembly in an efficient manner.
•Leakage at Bottom Connection: Tighten valve
threaded connection. If leak persists, remove
valve and seal threads with Teflon sealant.
•Leakage at Cover: Tighten bolts, replace
gasket.
•Valve Leaks when Closed: Inspect seat for
damage and replace. Exercise float.
•Valve Slams Closed: Air may be exhausting
too rapidly. Throttle exhaust of valve. Partially
close down throttling device (Figure 4) if
included.
•Air is not exhausted: Inspect float for free
travel, damage or water leakage. Check that
exhaust piping is not clogged or isolation valve
inadvertently closed. Open throttling device
Figure 3. Valve may be too small for
application. Identify pump flow rate and call
factory to check sizing.
DISSASSEMBLY
The valve can be disassembled without
removing it from the pipeline. Or for
convenience, the valve can be removed from the
line. All work on the valve should be performed
by a skilled mechanic with proper tools. Refer to
Figure 2. All work on the valve should be
performed by a skilled mechanic with proper
tools. Refer to Figure 2.
1. Close inlet shut-off valve. Open drain valve
or remove drain plug. Remove the cover
bolts (7) on the top cover.
2. Pry cover (2) loose and lift off valve body.
3. Remove retainer bolts (8) and inspect seat
for cracks in rubber or wear in sealing
surface.
4. Turn guide bushing (9) to remove it from the
cast baffle (3).
5. Clean and inspect parts. Replace worn parts
as necessary and lubricate parts with FDA
approved grease such as Lubriko #CW-606.
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