Sewer Systems

Grinder Pumps

W-Series | Fiberglass Grinder Pump Stations

W Series Fiberglass largeThe W-Series is E/One's most versatile grinder pump station — a range of basins, covers, discharges, inlets and panels are available. Grinder pumps pump wastewater from the home to the central sewer and/or treatment system through small-diameter pipes.

W-Series Fiberglass stations are available with one grinder pump (simplex) and up to four pumps (quadplex).

Drawings & Installation Instructions

W-Series Fiberglass Tank Drawings (PDF, 1 mb)

W-Series Fiberglass Tank Drawings (zipped DXF, 5 mb)

W-Series Installation Instructions (PDF, 2.5 mb)

Extreme Series Pump Curve (PDF)

Specification — with "Wired" Level Sensor (DOC)

Specification — with "Wireless" Level Sensor (DOC)


E/One's grinder pump station consists of a pump inside an open wetwell tank. Stations can be configured with one, two, three, or four grinder pumps. Several tank sizes are available, depending on the number of pumps needed. Refer to the drawing files for the tank choices available with each station.

The grinder pump, motor controls and level-sensing are integrated into a compact unit, easily removable for service.

The "WH" model is the “hardwired,” or “wired,” model where a cable connects the motor controls to the level controls through watertight penetrations.
The "WR" model is the “radio frequency identification” (RFID), or “wireless,” model that uses wireless technology to communicate between the level controls and the motor controls.

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 grinder pump is automatically activated and runs for very short periods. Electrical consumption of the grinder pump is low and will vary with actual water consumption. For example, a single household that uses 250 gallons of water per day should use less than 10 kwhr per month to run a simplex station.

Operational Information

Motor: 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 DWV 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

US and foreign patents issued and pending.