Blackmer’s System One centrifugal pumps are designed for high-volume, severe-duty applications in the water and wastewater industries. Designed around the seal where 90 percent of pump failures occur, the pump has a stiff, heavy-duty shaft and large bearings resulting in a wide operational window off the Best Efficiency Point (BEP), improving mean time between failures and reducing maintenance costs. The System One is available on four frame variations, with multiple size configurations. Each frame type offers a low L3/D4 stiffness ratio. The Frame S is a heavy-duty alternative to standard small-frame pumps, delivering capacities to 102 m3/hr (450 GPM) while meeting ASME/ANSI dimensional specifications. The Frame A and LD17 have the most stable shaft for their pump size, which reduces bearing, mechanical seal and shaft failures, while reaching capacities of 320 m3/hr (1,400 GPM). The Frame M ASME/ANSI B73.1 pump offers an available centerline mount for high-temperature applications. The Frame M pump also includes an optional left/right side discharge and vertical mount configuration. In addition to the three frame styles, the System One line of pumps includes a Vortex pump version. The Vortex pump can handle entrained solids without clogging. Available in the LD17 configuration, the Vortex pump has capacities to 340 m3/hr (1,500 GPM).