Features
E/One's WH484 grinder pump station consists of four Extreme series grinder pumps inside an open wetwell tank. The grinder pumps, motor controls and level-sensing are integrated into a compact unit, easily removable for service.
Solids are ground into fine particles that pass easily through the pump, check valve and small-diameter pipe lines — even objects that are not normally found in sewage, such as plastic, rubber, fiber, wood, etc. The 1-1/4" discharge connection can be adapted to any piping materials that meet local code requirements. The internal check valve assembly, located in the grinder pump, is custom designed for non-clog, trouble-free operation.
The tank is made of tough corrosion-resistant HDPE. Designed
specifically for low pressure sewer applications, the optimum tank capacity of
486 gallons provides ample storage. A single WH484 can accommodate flows of up to 7000
gallons per day.
Stations are available in several heights to accommodate various burial depth requirements. See drawings (below) for more information.
Operational Information
Motor (each pump)
1 HP, 1725 rpm, high torque, capacitor start, thermally protected, 240 or 120 volt, 60 hertz, 1 phase
Inlet Connections
4" inlet grommet standard for PVC pipe. Other inlet configurations available from factory.
Discharge Connections
Pump discharge terminates in 1-1/4" NPT female thread. Can easily be adapted to 1-1/4" PVC pipe or any other material required by local codes.
Discharge (per pump)*
15 gpm at 0 psig
11 gpm at 40 psig
7.8 gpm at 80 psig
Overload Capacity
Maximum pressure that the pump can generate is limited by motor characteristics to a value well below the rating of the piping and appurtenances. Automatic reset feature does not require manual operation following overload.
US and foreign patents issued and pending.
*Discharge data includes loss through check valve, which is minimal.
Drawings & Installation Instructions
WH484 Drawings (PDF, 2 mb)
WH484 Drawings (zipped DXF, 28 mb)
WH484 Installation Instructions (PDF, 2 mb)
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