The DNB series is used for pumping and draining 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 main components are made of GG20 cast iron. The double mechanical seal in a back-to-back configuration, located in the oil chamber, ensures a long product life.
Advantages of DNB Dirty Water Pumps
Dirty water such as rainwater or greywater from showers, washing machines or sinks, for example (without solids or fecal matter), does not require impellers with large free passages, as it contains no elements that could block the flow or become entangled in it. Therefore, we can use much more efficient impellers than Vortex or open-channel impellers to pump it. DNB dirty water pumps have been designed specifically 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 range of applications in pumping stations for stormwater, 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 ground, as well as a flange for attaching a connection or a DRENO-type coupling foot bracket: A, B or DUTY. The DNB model is available in single- and three-phase versions, with or without a built-in float, depending on the customer's preferred control method.
Control 乐彩
The DNA sewage pump is available in four versions, combining single- and three-phase power with control by a built-in float switch or an external signal. To control DNA pumps (except versions with a built-in float switch), we recommend the simple M121 controllers M121 (230V), as well as the M131 (400V). For more demanding users and two-pump pumping stations, we offer professional power and control panels with relay-contactor control SPP and SPS.
Installation methods
Thanks to the DN flange, DNB pumps are often installed on coupling feet in pumping stations for rainwater, pre-treated wastewater, and process water. With a suitable hose connection (an elbow with a plain end), you get a portable pump for drainage and handling liquids with a high solids content (gravel, sand, debris). A DNB sewage pump can easily be used to water the garden with rainwater, drain a flooded garage or basement, or pump water from a pond or ditch into another tank. DNB pumps have sturdy feet that extend from the pump housing, allowing them to stand on level ground with sufficient clearance beneath the housing for water intake.
Like every DRENO sewage pump, the DNB also comes with a 10-meter power cable as standard. It works perfectly with DRENO coupling feet: DUTY 65, and B4 PN10.
Features
- High-efficiency S-FLOW impeller,
- Exceptionally quiet operation,
- Side flange outlet allows installation on a coupling foot and easy connection of a flexible hose using a clamp or quick connector,
- Built-in float switch controls pump operation and protects it from running dry,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with Schuko plug,
- Warranty and post-warranty service,
- 24-month warranty.
