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MAINTENANCE
The Air Release Valve requires no scheduled
lubrication or maintenance.
INSPECTION:
Periodic
operation can be performed. A manual drain valve
can be installed in the lower drain plug to perform
this operation as shown in Figure 3.
FIGURE 3. Inspection Piping
1. With the inlet shutoff valve open, partially
open the drain valve until flow can be heard.
If the air valve is working properly, water
should be exhausted from the drain valve. If
air is exhausted, follow steps 2-6.
2. Close the inlet shutoff valve.
3. Slowly open the drain valve to allow the fluid
in the valve to drain.
4. Close the drain valve.
5. Slowly open the inlet shutoff valve to fill the
valve with water.
action and verify that the valve closes
without leakage.
inspection
to
verify
Observe the seating
6. If leakage occurs, the valve should be removed
and inspected for wear or possible damage from
foreign matter.
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.
valve and seal threads with thread sealant.
• Leakage at Cover: Tighten bolts per Table 2,
replace gasket.
• Valve Leaks when Closed: Flush valve to remove
debris.
Disassemble and inspect seat, orifice
button, and float.
sand for weight but if water is detected, replace
float.
• Valve not Venting Air: Check that operating
pressure does not exceed Working Pressure on
nameplate.
Perform inspection steps 2-6 and
disassemble valve if problem persists.
DISASSEMBLY
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. No special tools are required.
The
valve
must
removing the cover or pressure may be
released causing injury.
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 the 2 retainer rings (13) and pivot pins
(12) that pass through the lever frame (3). The
float (5) and linkage will be free from the cover.
Disconnect float from lever (10).
3
If leak persists, remove
NOTE: Many floats contain
WARNING
be
drained
before
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