Graco Hong Kong Ltd. Supplies Low Shear 4-Ball Circulating Pump. Graco Hong Kong Ltd. Offers fluid handling systems and components. Low Shear 4-Ball Circulating Pump will allow to handle large flow requirements while operating at low cycle rates. Low Shear 4-Ball Circulating Pump lower requires fewer cycles per gallon and longer intervals between seal replacement. It is available under the brand name of President 4-Ball Pump.