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, housed in an oil chamber, guarantees a long product life.
Advantages of DNB dirty water pumps
Dirty water such as rainwater or greywater from a shower, washing machine or sink (without solids 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 impellers to pump it. DNB dirty water pumps are specially designed for high efficiency, with large passages through the S-Flow impeller channels, while using relatively low-power electric motors.
Applications of DNB pumps
Highly efficient S-Flow impellers are used in a wide range of applications, including pumping stations for rainwater, light (grey) wastewater, mechanically pre-treated wastewater, process water, slurry, leachate and wastewater treatment plants. DNB electric wastewater 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 bracket of type A, B or DUTY. The DNB model is available in single- 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 supplies with control by a built-in float switch or an external signal. To control DNA pumps (excluding versions with a built-in float switch), we recommend the simple M121 controllers (230V) and M131 controllers (400V). 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. 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, waste). The DNB sewage pump can be used to water the garden with rainwater, drain a flooded garage or basement, and pump water from a pond or ditch into another tank. DNB pumps have sturdy feet extending 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,
- Side flange outlet allows installation on a coupling foot and easy connection of a flexible hose using a clamp or quick coupling,
- Built-in float switch controlling pump operation and protecting it against dry running,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with free ends,
- Warranty and post-warranty service,
- 24-month warranty.
