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Exhaust conversion drawing – Blagdon Pump B75 Non-Metallic User Manual

Page 30

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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