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, housed in an oil chamber, guarantees 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 passage, 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 designed specifically for high efficiency while maintaining a large passage through the S-Flow impeller channels, while using relatively low-power electric motors.
Applications of DNB pumps
High-performance 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 mounting a connection or a DRENO coupling foot bracket of type: A, B or DUTY. The DNB model is available in single- and three-phase versions, 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 supply 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 simple controllers M121 (230V), as well as M131 (400V). 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. When fitted with a suitable hose connection (an elbow with a plain end), they become portable pumps for drainage and for handling liquids with a high solids content (gravel, sand, debris). A 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 protruding from the pump body, allowing them to stand on a level surface with sufficient clearance beneath the body for water intake.
Like all DRENO sewage pumps, the DNB also comes standard with a 10-meter power cable. They work perfectly with DRENO coupling feet: DUTY 80 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 connector,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with free ends,
- Warranty and post-warranty service,
- 24-month warranty.
