Blagdon Pump B75 Non-Metallic - Manual (Page 30)

s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 30
2/07 Model B75 Non-Metallic Design Level 2 Page 27
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.
Use a #8 Torx or flat screwdriver to
remove the six self-tapping screws (item
1-J).
Remove the muffler cap and muffler
(items 1-D and 1-F). The 1" NPT molded
threads in the air distribution valve body
(item 1-B).
Piping or hose may now be installed.
IMPORTANT INSTALLATION
NOTE: The manufacturer recommends
installing a flexible 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