Owner manual

avbmdl1sm-rev0111 Model AVB Metallic Page 5
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

. Install shut-off valves on both the suction and
discharge of the pump. (This will help limit the amount of product that enters the center section
of the pump in the event of a diaphragm failure.) Using shut-off valves in conjunction with a drain
port also provides a means of allowing the lines to be drained when maintenance needs to
be conducted.
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In the event of diaphragm
rupture, pumped material
may enter the air end of the
pump, and be discharged
into the atmosphere. If
pumping a product which is hazardous or toxic,
the air exhaust must be piped to an appropriate
area for safe disposition.
When the supply liquid level is above the air inlet of the pump, and a
diaphragm fails, the pumped liquid or fumes can enter the air end through
the point of failure. When a diaphragm failure is detected, it is best to close
the shut-off valves and bleed the lines of product. This will limit the ability
of the material being pumped to enter the AirVantage. Failure to do so may
result in damage to the AirVantage and air distribution components.



1. Close the suction shut-off valve
(this will limit any new product from
entering the pump)
2. Close the discharge shut-off valve
(this will stop any product from
reentering the pump)
3. Close the air supply shut-off valve
4. Drain the discharge line
5. Drain the suction line
6. Perform maintenance
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
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