January 19, 2006
Internal and external gear pumps for the rubber, plastics and polyurethanes industries are used for the dispensation of finished products in the base chemical manufacturing process. Flow rates are up to 1,500 gal/min and differential pressures are up to 3,000 psi. They handle viscosities from water-thin to 500,000 cPs. Both internal and external can pump the same amount of liquid per shaft rotation, regardless of material viscosity and pressure requirements.