The open impeller design of 811 ANSI Series pumps (photo) provides performance advantages during the pumping of demanding chemical process fluids. For instance, the open impeller minimizes concentrated wear by balancing the hydraulic axial thrust load. It also reduces stuffing-box pressure, simplifies maintenance, extends pump life and reduces repair costs, says the company. These self-tightening impellers also help to reduce leakage and failure. — Griswold Pump Co., Grand Terrace, Calif.
This pump is ideal for corrosive, abrasive, solid and fibrous materials
| By Chemical Engineering