Davey's Sewage Grinder Submersible Pump
Key features:
- Sump pump type.
- Suitable for soft organic solids, sanitary products, thin rubber products and even some textiles in suspension.
- For grey and black water pumping, sump emptying, septic effluent, raw sewage disposal, and pumping wastewater with soft solids in suspension use.
- 12 months warranty for pump, motor & float switch.
- Hermetic seal for watertight closure.
Classified As:
Overview of Davey's Sewage Grinder Submersible Pump
Ideal for breaking down raw sewage
Davey submersible Grinder pumps consist of a solids handling grinder inlet with a high head open impeller to pump wastewater containing soft solids in suspension. Suitable applications include grey and black water pumping, sump emptying, septic effluent and raw sewage disposal, and pumping wastewater with soft solids in suspension.
Grinder pumps are typically used for heavy duty shredding with a grinding ring at the input point, and have an open impeller, centrifugal design preventing blockages of the pump or pipework. A 304SS grade steel for the shaft, motor shell and fasteners ensure a long service life.
With silent operation and quick, easy installation, the Davey Grinder range is a low maintenance product to help pump soft organic solids, sanitary products, thin rubber and even some textiles by shredding them into a slurry, easily pumped from there.
Models in the range:
- D120G – single phase, 1.2kW
- DT12G – three phase, 1.2kW
- DT22G – three phase, 2.2kW
Davey recommends utilising SR50 slide rail kits with Grinder pumps, for easy removal and servicing. There is a choice of either single or three phase motors.
Applications
Ideal for grey and black water pumping, sump emptying, septic effluent and sewage disposal and pumping of waste water with soft solids in suspension.
Features And Benefits
- Able to pump soft organic solids, sanitary products, thin rubber products and even some textiles in suspensions, by shredding to a slurry.
- Open impeller prevents blockage of the pump by small solids in the slurry.
- High heads and small solids allow connection to small discharge pipe systems, especially suited to pumping waste water to pressure sewer mains.
- Silent operation.
- Quick and easy installation.
- Hose tail supplied with every pump.
- Low maintenance.
- Fully repairable.
- Mounting feet with rubber cushions fitted for a firm and stable positioning during installation and operationg for D75G/GA, DT08G, D120G/A, D150G/A, DT12G & DT15G.
- Adaptable to slide rails – see accessories.
Pump
- Heavy duty shredding and grinding ring at inlet.
- Centrifugal design, open impeller.
- Double mechanical shaft seal in oil bath.
- Hard faced Silicon Carbide / Ceramic seal on pump side.
- Sand slinger lip seal for added protection.
- O-ring casing sealing.
- Corrosive resistant stainless steel and quality heavy-duty powder-coated cast iron pump parts.
Motor
- 2 pole, 2900rpm 50 Hz 240V single phase or 415V three phase.
- Submersible with IPX8 enclosure
- Class F insulation
- 10 metre H07RN-F oil resistant power lead and seal sensor lead fitted with bared wire lead ends for easy connection to power supply terminations.
- Seal sensor leads fitted for easy connection to a protection relay to enable timely repairs prior to motor damage. Not fitted to D75G/GA or DT08G models.
- Protected against both high operating temperatures and high current by a built-in automatically resettling thermal overload.
| Operating Limits | |
|---|---|
| Capacities to | 324 lpm |
| Maximum head pressure | 35m / 114.92 ft |
| Maximum submergence | 20m / 65.62 ft |
| Maximum pump water temperature | 40°C / 104 |
| Suitable Fluids | |
|---|---|
| Sewage or “Grey Water” of neutral pH containing up to 20% soft organic solids (some wear should be expected while pumping hard solids in suspension). | |
| Materials of Construction | |
|---|---|
| Part | Material |
| Impeller | Cast iron – FCD 400 |
| Shredding ring | High chromium steel |
| Grinding ring | High chromium steel |
| Pump casing | Cast iron – FCD 400 |
| Outlet | Cast iron – FCD 200 |
Shaft seal – pump side Shaft seal – motor side | Silicon carbide / ceramic Carbon / ceramic Mechanical seals in captive oil bath and oil seal. |
| Shaft seal elastomer | Nitrile rubber |
| Pump shaft | 304 stainless steel |
| O-rings | Nitrile rubber |
| Motor shell | 304 stainless steel |
| Fasteners | 304 stainless steel |
| Float and power supply leads | H07RN-F oil resistant |
Electrical Data
| Electrical Data | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | D75G/GA | D120G/GA | D150G/GA | DT08G | DT12G | DT15G | DT22G | DT37G |
| Electrical lead | 10m / 32.81 ft | |||||||
| Phase | Single | Three | ||||||
| Supply voltage | 220-240 | 380-415 | ||||||
| Input power (P1) | 1.2 kW | 1.6 kW | 2 kW | 1 kW | 1.5 kW | 1.9 kW | 2.8 kW | 4.5 kW |
| Input power (P2) | 0.75 kW | 1.2 kW | 1.5 kW | 0.75 kW | 1.2 kW | 1.5 kW | 2.2 kW | 3.7 kW |
| Full load current | 7.5 A | 10.0 A | 13.0 A | 1.9 A | 2.3 A | 3.0 A | 4.5 A | 7.9 A |
Dimensions (mm)
| Dimensions (mm) | |||||||
| Model | A | B | C | D | E | Outlet B.S.P. | Net Weight (KG) |
| D75G | 515 | 300 | 165 | 170 | – | 1 1/4″ F | 30 |
| D75GA | 515 | 300 | 165 | 170 | 330 | 1 1/4″ F | 30 |
| D120G | 530 | 300 | 165 | 170 | – | 1 1/4″ F | 31 |
| D120GA | 530 | 300 | 165 | 170 | 340 | 1 1/4″ F | 31 |
| D150G | 580 | 305 | 185 | 180 | – | 1 1/4″ F | 37 |
| D150GA | 580 | 305 | 185 | 180 | 340 | 1 1/4″ F | 37 |
| DT08G | 460 | 300 | 165 | 170 | – | 1 1/4″ F | 27 |
| DT12G | 460 | 300 | 165 | 170 | – | 1 1/4″ F | 30 |
| DT15G | 490 | 305 | 185 | 180 | – | 1 1/4″ F | 32 |
| DT22G | 550 | 350 | 165 | 206 | – | 2″ F | 48 |
| DT37G | 570 | 350 | 165 | 206 | – | 2″ F | 51 |
Hydraulic Performance
Installation And Priming
Use a rope to position and retrieve the pump. Do not lower or retrieve the pump using the power lead as this may damage the cable entry seals, causing water leaks and unsafe operation.
Do not use this product for recirculating or filtering swimming pools, spas, etc. While these pumps are built to high safety standards, they are not approved for installations where people will be in the water while they are operating.
Do not pump abrasive materials. Sand and grit in the water being pumped will accelerate wear, causing shortened pump life.
Keep your pum clean, particularly in situations where lint, hair or fibrous materials may get bound around the pump shaft. Regular inspection and cleaning will extend pump life.
Make room for the float switch to operate. Automatic models have a float switch to turn them on when the water level rises and turn them off again when it has been pumped down to the safe operating level of the pump. If the float switch is not free to rise and fall, correct pump operation may not be possible.
Do not run your pump dry. Non-automatic models must be switched off manually or by way of an external float / level switch when the water level is reduced to the top of the pump housing.
Included In The Box
Sewage Grinder Submersible Pump
User Manual
Proof of Purchase
12 Months of Manufacturer Warranty
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