Val-Matic 49A Wastewater Air Release Valve - Manual (Page 2)

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VAL-MATIC'S WASTEWATER AIR RELEASE VALVE
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 Wastewater Air Release Valve
has been designed with stainless steel trim to give
years of trouble-free operation but regular
maintenance is recommended for valves subject to
fluids containing suspended solids or greases/oils.
The Wastewater 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.
The valve is a float-operated, resilient-seated valve
designed to handle waste fluids. The valve may be
equipped with backwash accessories. The Size,
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 Wastewater 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.
The valve can be equipped with optional external
valves and hose connections for backwashing.
These items are packaged separately.
FIGURE 1. WASTEWATER 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 liquids service.