PUMPING HAZARDOUS LIQUIDS
When a diaphragm fails, the pumped
liquid or fumes enter the air end of
the pump. Fumes are exhausted into
the surrounding environment. When
pumping hazardous or toxic materials,
the exhaust air must be piped to an
appropriate area for safe disposal. See
illustration #1 at right.
This pump can be submerged if
the pump materials of construction
are compatible with the liquid being
pumped. The air exhaust must be
piped above the liquid level. See
illustration #2 at right. Piping used for
the air exhaust must not be smaller
than 1" (2.54 cm) diameter. Reducing
the pipe size will restrict air fl ow and
reduce pump performance. When the
pumped product source is at a higher
level than the pump (fl ooded suction
condition), pipe the exhaust higher than
the product source to prevent siphoning
spills. See illustration #3 at right.
CO NVERTING THE PU MP FOR
PIPING THE EXHAUST AIR
The following steps are necessary to
convert the pump to pipe the exhaust
air away from the pump.
Use a #8 Torx or fl at screwdriver
to remove the six self-tapping screws
(item 1-J).
Remove the muffl er cap and muffl er
(items 1-D and 1-F). The 1" NPT molded
threads in the air distribution valve body
(item 1-B).
Pipi n g o r h ose may n ow be
installed.
IMPORTA N T IN STALLATION
NOTE: The manufacturer recommends
installing a fl exible hose or connection
between the pump and any rigid
plumbing. This reduces stresses on
the molded plastic threads of the air
exhaust port. Failure to do so may
result in damage to the air distribution
valve body.
Any piping or hose connected to
the pump’s air exhaust port must be
physically supported. Failure to support
these connections could also result in
damage to the air distribution valve
body.
CONVERTED EXHAUST ILLUSTRATION
Illustration #1
Illustration #2
Illustration #3
Exhaust Conversion Drawing
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