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, located in the oil chamber, ensures 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 types 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 in pumping stations for rainwater, 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-type guide rail foot: A, B or DUTY. The DNB range includes single-phase and three-phase models, with or without a built-in float, depending on the user’s preferred control method.
Control
The DNA sewage pump is available in four versions, combining single- and 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 (230 V) and M131 controllers (400 V). For more demanding users and dual-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, 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 pumping liquids with a high solids content (gravel, sand, waste). The DNB sewage 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 sturdy feet that protrude from the pump body, allowing them to stand on a level surface while providing 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 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 to control pump operation and protect it from running dry,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with bare wire ends,
- Warranty and post-warranty service,
- 24-month warranty.
