SANDPIPER G30 - Manual (Page 19)

sandpiperpump
.
com Model G30 Metallic •
16
g30mdl1sm-rev0614
When a diaphragm fails, the pumped liquid or fumes enter the natural gas
end of the pump. Fumes are exhausted into the surrounding environment. When
pumping hazardous or toxic materials, the exhaust gas 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 natural gas exhaust must be
piped above the liquid level. See illustration #2 at right. Piping used for the gas
exhaust must not be smaller than 1" (2.54 cm) diameter. Reducing the pipe size
will restrict natural gas flow and reduce pump performance. When the pumped
product source is at a higher level than the pump (flooded suction condition), pipe
the exhaust gas higher than the product source to prevent siphoning spills. See
illustration #3 at right.
PIPING THE NATURAL GAS EXHAUST
The following steps are necessary to pipe the exhaust gas away from the
pump.The gas distribution valve assembly (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 natural gas
exhaust port. Failure to do so may result in damage to the natural gas distribution
valve body.
Any piping or hose connected to the pump’s natural gas exhaust port must
be conductive and physically supported. Failure to support these connections
could also result in damage to the valve body.
If a high pressure gas spike is possible through the exhaust line, a pressure
regulator is required in the exhaust piping.
WARNING
Natural gas exhaust is to be
vented to low pressure safe
location using conductive Nitrile
rubber hose or metal piping in
accordance with local fire and
environmental codes, or an industry
or nationally recognized code
having jurisdiction over specific
installations, and/or CAN/CGA
B149, Installation Codes.
PUMPING HAZARDOUS LIQUIDS
NATURAL GAS EXHAUST ILLUSTRATION
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
Illustration #1
Illustration #2
Illustration #3
UNIVERSAL ALL SP
5: WET END