HELICAL ROTOR PUMP, BRONZE

Pipe size 3/4

FEATURES
• All Bronze or Corrosion Resistant Aluminum
Construction
• Heavy Duty Ball Bearings
• Designed for Pulley Drive Applications
• Quiet Running
• Can Handle Contaminated Liquids
• Carbon Face Mechanical Seal
• Buna Stator and Stainless Steel Rotor

CAPACITY - WATER 60OF

SPEED AND DRIVE
Viscous or thick liquids must be pumped at slower speeds as indicated in the above table. Speed reduction from standard electric motor speed can be obtained by pulleys in the direct ratio of speed reduction desired - large pulley on pump, small pulley on motor. Heavy liquids can be pumped at higher speeds but
require more horsepower in direct amount to their specific gravity - for example, a liquid with a specific gravity of 1.3
would require 1.3 times the original horsepower.

CHARACTERISTICS
The turning of the helical shaped rotor within the stationary stator creates a progressing cavity similar to a moving
piston. Liquid is thus displaced generating a pumping action. Unlike piston pumping, extremely high pressure cannot
be created because the stator is made of Buna N and is flexible. Because of this flexibility contaminated liquids can
be handled.

ROTATION
This helical rotor design demands a single rotation - clockwise
when facing the pump drive shaft. Pump rotation and “in” and “out” ports are indicated on the dimension diagrams on reverse side.

MATERIALS OF CONSTRUCTION
These pump housings and mounting brackets are made from cast aluminum or bronze alloy. The rotor is made from stainless steel with a hard chrome plate for improved wear properties. The stator is
made from molded Buna N. The mechanical seal is a carbon and
ceramic rotary face for positive sealing.

LIQUIDS
The corrosion resistant alloys used are compatible with common
liquids including water, water solutions, oils and many commercial
chemicals. Severe solvents are not compatible with the Buna and
should not be pumped. Viscous liquids can be pumped, but at slower
speeds. Samples of liquids, viscosity and recommended pump shaft R.P.M. are given on this page. Contaminated liquids can be pumped because of the flexible Buna stator.

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