FEATURES
• All Bronze Construction
• Stainless Steel Shafts
• Portable
• Compact
• Easy Impeller Replacement
• Macerator Easily Replaced
• Reversible Wear Plate
• Vacuum Switch Shut-off Optional
GENERAL DESCRIPTION
Close coupled Rubber Impeller Pumps are made
of high quality bronze for maximum corrosion resistance.
The rubber impeller is either directly attached to
the stainless steel motor shaft or the impeller is
mounted on a separate stainless steel shaft which is
counterbored on the outer end in order to slide over
the carbon steel motor shaft. Ball or sleeve bearings in
the motor support the shaft. Model 406M has a
mechanical seal. Impellers are made of Neoprene rubber,
Buna N impellers are available on request.
Flexible blades on the periphery of the impeller
provide the pumping action. While the impeller rotates,
the liquid between the blades is continuously
squeezed out into the discharge port by a cam located
inside the pumping chamber. The flow may be throttled
or shut off for a short period without the need of a
relief valve.
DRIVE ARRANGEMENT
Close coupled Rubber Impeller Pumps are
mounted directly onto the electric motor without the
use of a shaft coupling. This pump is coupled to a
standard motors with Nema C flange. It uses a bronze
adapter plate to accommodate the pump.
LIQUIDS AND TEMPERATURE
Liquids handled by Rubber Impeller Pumps with
standard Neoprene impellers are primarily fresh or salt
water and water solutions. Rubber Impeller Pumps are not
suitable for pumping gasoline or solvents. Buna N
impellers can handle oil contaminated water and kerosene
at reduced impeller service life.
Liquid temperature range is from 40o F to 140oF. If
freezing conditions are expected, the pump should be
drained by loosening the cover screws and the pump
chamber should be filled with antifreeze. Viscous liquids
and oils can not be pumped with Rubber Impeller Pumps.
SUCTION LIFT
On initial start-up Rubber Impeller Pumps must be
primed to prevent dry-running of the impeller. Suction lifts
of 15 ft. are possible when pump is fully primed. A foot
valve with built-in strainer at the beginning of the suction
line is recommended. Suction lines should be as short as
possible.