Val-Matic 50 Series Air Release Valve (Compound Lever Type) - Manual (Page 2)

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VAL-MATIC'S AIR RELEASE VALVE
(Compound Lever Type)
OPERATION, MAINTENANCE AND INSTALLATION
INTRODUCTION
This manual will provide you with the information
to properly install and maintain the valve to
ensure a long service life. The Air Release
Valve has been designed with stainless steel
trim to give years of trouble-free operation. The
Air Release Valve is typically mounted at the
high points in a piping system to automatically
remove pockets of air as they accumulate. The
valve can also be used to slowly release air in
tanks and pump casings.
Note: This valve is not intended for fluids
containing suspended solids such as
wastewater. For wastewater and other high
turbidity applications, use Val-Matic Series 48A
& 49A Sewage Air Release Valves.
The valve is a float-operated, resilient-seated
valve designed to handle clean fluids. The
Maximum Working Pressure and Model No. are
stamped on the nameplate for reference.
RECEIVING AND STORAGE
Inspect valves upon receipt for damage in
shipment. Handle all valves carefully without
dropping. Valves should remain boxed, clean
and dry until installed to prevent weather related
damage. For long term storage greater than six
months, the valve must remain in the box and
stored indoors. Do not expose valve to sunlight
or ozone for any extended period.
DESCRIPTION OF OPERATION
The Air Release Valve is designed to
automatically remove air pockets at the high
points in a piping system. The valve, as
shipped, is a normally open valve and will slowly
vent air through the top orifice. As fluid enters
the valve, the float will rise, closing the orifice.
As air accumulates in the piping system and
enters the valve, the float drops allowing the
venting orifice to open.
FIGURE 1. Compound Lever AIR RELEASE
VALVE
The lever mechanism provides mechanical
advantage for the float. During system
operation, the pipeline pressure exerts a strong
upward force on the sealing component, the
orifice button. The lever mechanism magnifies
the weight of the float so that the orifice will open
under high pipeline pressures. Additional ports
are provided for flushing, testing and draining
purposes.
CAUTION: This valve is not intended
for fuel service or fluids
containing suspended
solids.