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 major 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 (without solids or fecal matter) does not require impellers with free passages, as it contains no materials 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 are specially designed to deliver high efficiency while maintaining 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 S-Flow rainwater, light (grey) wastewater, mechanically pretreated wastewater, process water, slurry, rainwater, 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 coupling foot of type A, B or DUTY. The DNB model is available in single-phase and three-phase versions, with or without a built-in float, 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 switch or an external signal. To control DNA pumps (except versions with a built-in float switch), we recommend the simple M121 controllers (230 V) and the M131 controllers (400 V). For more demanding users and dual-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 stormwater, pretreated wastewater, and process water pumping stations. When fitted with a suitable hose connection (an elbow with a plain end), they become portable pumps for drainage and for handling liquids with a high solids content (gravel, sand, debris). The DNB wastewater 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 protrude from the pump body, allowing them to stand on level ground with sufficient clearance beneath the body for water intake.
Like every DRENO wastewater pump, the DNB also comes with a 10-meter power cable as standard. They work perfectly with DRENO coupling feet: DUTY 65, and B4 PN10.
Features
- High-efficiency S-FLOW impeller,
- Exceptionally quiet operation,
- Side flanged outlet allows installation on a coupling foot and easy connection of a flexible hose using a clamp or quick coupling,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with Schuko plug,
- Warranty and post-warranty service,
- 24-month warranty.
