Val-Matic Wastewater Air/Vacuum Valve User Manual

Manual No.

WA/VV-OM1-2

Val-Matic®

Wastewater Air/Vacuum Valve

Operation, Maintenance and

Installation Manual

INTRODUCTION ....................................... 1

RECEIVING AND STORAGE .................... 1

DESCRIPTION OF OPERATION .............. 1

INSTALLATION ......................................... 2

VALVE CONSTRUCTION ......................... 2

MAINTENANCE ........................................ 3

TROUBLESHOOTING .............................. 4

DISASSEMBLY ......................................... 4

REASSEMBLY .......................................... 4

PARTS & SERVICE .................................. 5

WARRANTY .............................................. 5

VALVE AND MANUFACTURING CORP.

905 Riverside Dr. ● Elmhurst, IL 60126

Phone [phone] ● Fax [phone]

VAL-MATICS WASTEWATER AIR/VACUUM 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/Vacuum Valve has been designed with
stainless steel trim to give years of trouble free
operation. Regular maintenance may be
required for valves subject to fluids containing
high suspended solids with greases/oils.

The Wastewater Air/vacuum valve is typically
mounted at the high points in a force main to
automatically exhaust large volumes of air
during filling and allow air to reenter during
draining. The valve is furnished in sizes 1”
through 8” sizes and is often used in
combination with a Wastewater Air Release
Valve to release air while the force main is under
pressure.

CAUTION: This valve is not intended

for flammable liquids
service.

The valve is a float operated, resilient seated
valve designed to handle waste fluids. The
valve may be equipped with backwash
accessories for sever service. 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.

Figure 1. 4”-20” Air/Vacuum Valve

DESCRIPTION OF OPERATION

The Wastewater Air/Vacuum Valve, as shipped,
is a normally open valve and will rapidly vent air
through the top opening. As fluid enters the
bottom of the valve, the float assembly will rise,
pressing the upper float against the seat. The
valve will remain closed until system pressure
drops to near zero pressure. It will open during
draining or when a vacuum condition occurs.
The valve can be equipped with external valves
and hose connections for backwashing.

The lower float provides buoyancy to seal the
top float and prevent sewage from fouling the
seat. The only moving parts in the valve are the
float and float guide shaft. The guide shaft
assures that the float enters the seat at the
optimum angle and prevents float contact with
any surface other than the resilient seat.
Additional ports are provided for flushing, testing
and draining purposes.

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