811 ANSI Centrifugal PumpsGriswolds line of 811 ANSI Pumps is engineered for flexibility and durability. The 811 is available in a wide range of sizes, capacities and materials to fit virtually any process fluid application. With over 30 selections and multiple design options, weve got your application coveredfor abrasive and corrosive substances, and capacities ranging from 4 through 4000 gallons per minute. Griswold maintains strict quality assurance programs to ensure that our entire product line is manufactured to the highest standard for engineered tolerances.