The DNB series is used for pumping and draining clear liquids and greywater. The special geometry of the S-Flow impellers enables the pumping of liquids containing suspended solids with short fibers, making them ideal for wastewater treatment plants.
Characteristics
All major components are made of GG20 cast iron. The dual mechanical seal in a back-to-back configuration, located in an oil chamber, guarantees a long product lifespan.
Advantages of DNB dirty water pumps
Dirty water such as rainwater or greywater from showers, washing machines, or sinks, for example (without solid particles and fecal matter), does not require impellers with wide free passages because it does not contain elements that could block or wrap around the flow. Therefore, much more efficient impellers than Vortex or open-channel impellers can be used for pumping it. DNB dirty water pumps have been specially designed for high efficiency while maintaining a large passage through the S-Flow impeller channels and using relatively low-power electric motors.
Applications of DNB pumps
Highly efficient S-Flow impellers are used in a range of applications, including rainwater pumping stations, 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 coupling foot attachment 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 wastewater pump is available in four versions combining single-phase or three-phase power with control by a built-in float or an external signal. For controlling DNA pumps (except versions with a built-in float), we recommend the simple M121 (230V) and M131 (400V) controllers. For more demanding users and two-pump stations, we offer professional relay-and-contactor power and control cabinets: 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. When fitted with a suitable hose connection (an elbow ending in a plain end), they become portable drainage pumps for handling liquids with a high content of solid particles (gravel, sand, and debris). A DNB wastewater pump can be used without difficulty 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 extending 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 comes standard with a 10-meter power cable. They work perfectly with DRENO coupling feet: DUTY 65, and B4 PN10.
Features
- Highly efficient S-FLOW impeller,
- Exceptionally quiet operation,
- Side flanged outlet enables installation on a coupling foot and easy connection of a flexible hose using a hose clamp or quick coupling,
- T1T2 thermal protection built into the motor winding and connected to an external control panel,
- 10 m H07RNF power cable terminated with free leads,
- Warranty and post-warranty service,
- 24-month warranty.
