The DNB series is used for pumping and draining clear liquids and greywater. The special geometry of the S-Flow impellers allows liquids containing suspended solids with short fibers to be pumped, 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, housed in an oil chamber, ensures a long product life.
Advantages of DNB Dirty Water Pumps
Dirty water such as rainwater or greywater e.g. from a shower, washing machine or sink (without solids or fecal matter) does not require free-flow impellers, as it contains no elements that could block the flow or become tangled in it. Therefore, much more efficient impellers than Vortex or open-channel impellers can be used to pump it. DNB dirty water pumps are specially designed for high efficiency while maintaining large passageways 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 runoff, light (grey) wastewater, mechanically pre-treated 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 of type: A, B or DUTY. The DNB model range includes single- and three-phase versions, with or without a built-in float switch, depending on the customer's preferred control method.
Control
The DNA wastewater 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 (230V), as well as M131 (400V). For more demanding users and dual-pump lift stations, we offer professional relay-contactor power and control panels, SPP and SPS.
Installation methods
Thanks to the DN flange, DNB pumps are often installed on coupling feet in pumping stations for rainwater, pretreated wastewater, and process water. When used with a suitable hose connector (an elbow with a plain end), the pump becomes portable for drainage and for handling liquids with a high solids content (gravel, sand, debris). 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 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 sewage pump, the DNB also comes standard with a 10-meter power cable. They work 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 coupling,
- Built-in float switch that 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.
