SANDPIPER U1F User Manual
Page 23
u1fmdl1sm-rev0614
Model U1F UL79 Listed Metallic Design Level 1 Page 21
SAFE AIR
EXHAUST
DISPOSAL
AREA
PUMP INSTALLATION AREA
1" DIAMETER AIR
EXHAUST PIPING
1" DIAMETER AIR
EXHAUST PIPING
1" DIAMETER AIR
EXHAUST PIPING
MUFFLER
LIQUID
LEVEL
SUCTION
LINE
LIQUID
LEVEL
SUCTION
LINE
MUFFLER
MUFFLER
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 flow and
reduce pump performance. When the
pumped product source is at a higher
level than the pump (flooded suction
condition), pipe the exhaust higher than
the product source to prevent siphoning
spills. See illustration #3 at right.
CONVERTING THE PUMP FOR
PIPING THE EXHAUST AIR
The following steps are necessary
to convert the pump to pipe the exhaust
air away from the pump.
Remove the muffler (item 21). The
air distribution valve (item 1) has 1" NPT
threads for piped exhaust.
IMPORTANT INSTALLATION
NOTE: The manufacturer recommends
installing a flexible conductive hose
or connection between the pump
and any rigid plumbing. This reduces
stresses on the molded 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
conductive and 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
The pump comes equipped
with a standard metal muffler
Air Valve Assembly
1
21