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.
Characteristics
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 (without solid matter or feces) 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 have been specially designed to deliver high efficiency while maintaining a large passage through the S-Flow impeller channels, while using relatively low-power electric motors.
DNB pump applications
High-efficiency S-Flow impellers are used in a range of applications, including pumping stations for S-Flow impellers find a range of applications in pumping stations for rainwater, 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 is available in single-phase and three-phase versions, with or without a built-in float, depending on the user's preferred control method.
Controls
The DNA sewage pump is available in four versions, combining single- or three-phase power with control via 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 two-pump pumping 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 stormwater and pre-treated wastewater pumping stations, as well as those handling process water. With a suitable hose connection (an elbow with a plain end), you get a portable pump for drainage and pumping 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, or pump water from a pond or ditch to another tank. DNB pumps have sturdy feet that extend from the pump body, allowing them to stand on level ground with adequate 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,
- The side flange outlet allows installation on a coupling foot and easy connection of a flexible hose using a hose clamp or quick coupling,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with bare ends,
- Warranty and post-warranty service,
- 24-month warranty.
