In this section, we have discussed vane, gear, and lobe pumps in a general sense and covered many of the technical attributes that give them their unique characteristics. From an applications standpoint, the advantages these pumps have over other types can be summarized in Table 4.

TABLE 3 Markets and applications

Animal Renderings Industry General transferring to burners of:

• beef by-products

• poultry by-products

Automobile Industry

Distribution and assembly line supply of:

• lubricating oil

• paint, lacquers and thinners

• test stand systems

Chemical Industry

Any process or distribution system handling <

• cellulose acetate

Cosmetics and Soap Industry

Non-emulsifying supply to packaging machinery of:

• liquefied soap

Food Products Industry General process transferring of:

• milk and milk by products

• sucrose solutions

• vegetable shortening

General Industry and OEMs

Various fluid handling requirements for:

• burners and heater sets

• centrifuge separator systems

• cooking fat filtration units

• filtering and metering units

• fluid reclamation systems

• hydraulic auto lifts and elevators

• lube oil supply units for rotating equipment

• machinery coolant and lubricant circulation

• paint spray booths

• roofing tar systems

• textile dyeing and printing machinery

• wood preservation machinery

Marine Industry

Unloading, tank stripping and engine room supply of:

• marine diesel oil

• lubricating oil

Paint and Lacquer Industry

Various process handling applications for:

• dyes and pigments

• titanium dioxide slurry

• thinners and solvents

Petroleum Industry

Blending, packaging, and unloading of:

• lubricating oils

Pulp and Paper Industry

Various general mill and coating applications for:

• deinking solvents

• titanium dioxide slurry

• turpentine

• waste pond recycling

Plastics and Petrochemical Industry Process transfer of:

• cellophane

• epoxy hardener

• insulation coatings

• isocyanate

Public Utilities and Power Stations General transfer and supply of:

• central lubrication systems

• fuel oil supply to burners

• oil pressure for damper controls

• transfer of gashouse tars, creosote, etc.

Steel Industry Circulation and supply of:

• lube oil to rolling mills

• hydraulic oil to hydraulic lifters

TABLE 4 The basic features and applications benefits of the main rotary pumps*

Vane, Gear and Lobe Pumps



Flow largely independent of pressure

Predictable pump performance over varying system conditions

Wide hydraulic coverage-Flows to 10,000 GPM, differential pressures to 5,000 PSI

Few applications a rotary pump can't handle

Efficiently handles high viscosity fluids- over 100,000 SSU in some cases

Lower operating cost as efficiencies actually increase with viscosity

Smooth, puls-e-free flow

Less system cos-t no need for vibration isolators or vibration dampeners

Self priming and will not vapor lock

Less system complexity - no need to prime or reprime

Non-shearing pump action

Will not degrade shear sensitive polymers and petrochemicals

*10,000 gpm = 2,300 m3/h; 5000 psi = 345 bar; 100,000 SSU =21,600 centistokes.

Many other types of rotary pumps were included in this discussion. The three types discussed here, and the numerous design variations of each type, constitute the bulk of rotary positive displacement pumps in use today.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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