D-Series | DH502 & DR502 Grinder Pump Station
The E/One model DH502/DR502 duplex grinder pump station is an ideal choice for multiple single-family homes and light commercial applications. Grinder pumps send wastewater from the home to the central sewer and/or treatment system through small-diameter pipes.
Featuring the E/One Extreme grinder pump, the DH502/DR502 offers a high level of reliability and ruggedness.
This model was previously known as the Model GP 2016.
Drawings & Installation Instructions
Recommended Alarm Panel
Additional alarm panel options are available.
The DH502/DR502 grinder pump station consists of two pumps and tank. The grinder pumps, motor controls and level-sensing are integrated into compact units, easily removable for service.
- The DH502 is the “hardwired,” or “wired,” model where a cable connects the motor controls to the level controls through watertight penetrations.
- The DR502 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 pumps, check valves and small-diameter pipe lines — even objects that should not be in sewage, such as plastic, rubber, fiber, wood, etc. The 1-1/4" discharge connections can be adapted to any piping materials that meet local code requirements.
The tank is made from tough, corrosion-resistant FRP and offers 500 gallons of capacity. A single DH502/DR502 can be used for nine average, single-family homes, and up to 24 homes where codes allow and with consent of the factory. The DH502/DR502 can accommodate flows of 6000 gallons per day.
Units are available for indoor and outdoor installations. Outdoor units accommodate a wide range of depths. E/One requires the installation of its stainless steel UNI-LATERAL to prevent backflow from the sewer system from entering the grinder pump station.
About the E/One Grinder Pump
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.
E/One grinder pumps do not require preventive maintenance and boast an average of eight to 10 years between service calls. If service is required, the unique, one-piece core eliminates the need for in-field troubleshooting and servicing — the pump core can be quickly pulled out and replaced, meaning minimal maintenance costs and inconvenience for the homeowner.
Motors: 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. E/One requires the installation of its stainless steel UNI-LATERAL to prevent backflow from the sewer system from entering the grinder pump station.
15 gpm at 0 psig
11 gpm at 40 psig
7.8 gpm at 80 psig
US and foreign patents issued and pending.
A dedicated 30A breaker is required, with #10 wire, for 240V single phase. You need to bring L1, L2, N and Gnd to the E/One panel.
If only 208V power is available, a buck boost transformer is required to boost 208V to 240V. The E/One pump requires a minimum of 216V to start and run reliably.