Designed for low-flow, high-head applications, the Model 811LF line of ANSI pumps from Griswold Pump Co. can withstand conditions in process and transfer applications. The pumps feature flow capacities as low as 4 gpm with heads as high as 920 ft due to a circular concentric volute casing and radial vane impeller to reduce excessive radial loads, shaft vibration, and deflection. Manufactured-in balance holes reduce axial thrust and seal-chamber pressure, extending seal and bearing life.

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