Griswold Pump Company announced that its 811 Series ANSI centrifugal pumps are available with a 17-inch impeller. Addition of this impeller makes the 811 Series ideal for high-capacity transfer within large storage terminal operations.
The 811 ANSI Series pumps meet the needs of terminal operators because they feature open impellers with two times the wear area of a closed design, which optimizes the performance of the pump's open impeller and allows renewable performance. This open-impeller design feature also minimizes concentrated wear by balancing the hydraulic axial thrust load and reducing the stuffing-box pressure. This not only facilitates corrosive, abrasive, solid, and stringy-fiber handling, but also simplifies maintenance, extends pump life, and reduces repair costs.
Since casings of the 811 Series pumps can be constructed of a wide choice of materials, including ductile iron, 316 stainless steel, CD4MCu, and alloy 20, they meet an array of transfer applications found within storage terminal operations, such as petroleum, biofuels, chemicals, and vegetable oils. They are constructed through investment and no-bake casting processes to ensure a smooth, precise finish. Griswold also employs metallurgists to supervise all heat-treating operations so maximum corrosion resistance for all alloys is ensured.
Other features of the 811ANSI Series are self-tightening impellers that reduce leaks and failures; the ability to externally adjust clearance so peak efficiency is ensured even after wear-area loss; back pump-out vanes that reduce pressure on the shaft seal and reduce thrust loads on bearings; and investment-cast impellers that are ultra-smooth to guarantee hydraulic and mechanical balance.
For more information, go to www.griswoldpump.com. Griswold is an operating company within Dover Corporation's Pump Solutions Group (PSG). For more information on PSG, visit www.pumpsg.com.