The DNB series is used to pump and drain clear liquids and greywater. The special geometry of the S-Flow impellers allows them to pump liquids containing suspended solids with short fibers, making them ideal for wastewater treatment plants.
Specifications
All major components are made of GG20 cast iron. The double mechanical seal in a back-to-back configuration, located in the oil chamber, guarantees a long product service life.
Advantages of DNB Dirty Water Pumps
Dirty water such as rainwater or greywater from showers, washing machines, or sinks (without solid particles or fecal matter) does not require impellers with free passages, as it contains no elements that could block the flow or wrap around the impeller. Therefore, we can use much more efficient impellers than Vortex or open-channel types to pump it. DNB dirty water pumps have been specially designed for high efficiency, with large passages through the S-Flow impeller channels, while using relatively low-power electric motors.
DNB Pump Applications
Highly efficient S-Flow impellers are used in a wide range of applications in pumping stations for rainwater, light (grey) wastewater, mechanically pretreated wastewater, process water, slurry, leachate and wastewater treatment plants. DNB electric dirty water pumps have feet that allow them to stand freely on the floor, as well as a flange for attaching a connection or a DRENO guide rail coupling foot of type: A, B or DUTY. The DNB model range includes single-phase and three-phase versions, with or without a built-in float switch, depending on the user's preferred control method.
Control
The DNA sewage pump is available in four versions, combining single- and three-phase power with control by a built-in float or an external signal. To control DNA pumps (except versions with a built-in float), we recommend simple controllers M121 (230V), as well as M131 (400V). For more demanding users and two-pump pumping stations, we offer professional relay-contactor control panels SPP and SPS.
Installation methods
Thanks to the DN flange, DNB pumps are often installed on coupling feet in rainwater, pretreated wastewater, and process water pumping stations. With a suitable hose connection (an elbow with a plain end), they can be used as portable drainage pumps for liquids with a high solids content (gravel, sand, waste). The DNB sewage pump can be used to water a garden with rainwater, drain a flooded garage or basement, or pump water from a pond or ditch into another tank. DNB pumps have stable feet protruding from the pump body, allowing them to stand on level ground with sufficient clearance beneath the body for water intake.
Like every DRENO sewage pump, the DNB also comes standard with a 10-meter power cable. It works perfectly with DRENO coupling feet: DUTY 80 and B4 PN10.
Features
- High-efficiency S-FLOW impeller,
- Exceptionally quiet operation,
- The side flange outlet allows mounting on a coupling foot and easy connection of a flexible hose using a clamp or quick connector,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with bare ends,
- Warranty and post-warranty service,
- 24-month warranty.
