Griswold™ Pump Co.: Three new 17-inch 811 Series pump models are 100% compatible and interchangeable with many competitive B73.1 pump models. Features include: maximum flow rates to 7000 gpm; maximum heads to 310 ft; epoxy-coated oil sump; oil-level sight glass; SKF® bearings; and Inpro/Seal® bearing isolators. Mechanical or packing seal options are available.