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.
Specifications
All major components are made of GG20 cast iron. Double mechanical seals in a back-to-back configuration, housed in an oil chamber, ensure a long product life.
Advantages of DNB dirty water pumps
Dirty water such as rainwater or greywater from showers, washing machines or sinks, for example (without solids or fecal matter), does not require impellers with free passages, as it contains no material 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 providing a large passage through the channels of the S-Flow impeller, while using relatively low-powered electric motors.
DNB pump applications
The high-efficiency S-Flow impellers are used in a wide range of applications, including pumping stations for S-Flow impellers handle rainwater, light (grey) wastewater, mechanically pretreated wastewater, process water, slurry, leachate and sewage 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 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 switch, depending on the customer'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 or an external signal. To control DNA pumps (except versions with a built-in float), we recommend the simple M121 (230V) and M131 (400V) controllers. For more demanding users and dual-pump pumping stations, we offer professional relay-contactor control panels 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, debris). 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 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,
- The side flange outlet allows installation on a coupling foot and easy connection of a flexible hose using a hose clamp or quick connector,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with Schuko plug,
- Warranty and post-warranty service,
- 24-month warranty.
