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.
Features
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 a shower, washing machine, or sink (without solids or fecal matter) does not require impellers with free passages, since 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, using relatively low-powered electric motors.
DNB pump applications
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 coupling foot hook 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 customer’s preferred control method.
Control
The DNA sewage pump is available in four versions combining single-phase and three-phase power supplies 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 simple controllers M121 (230V), as well as M131 (400V). For more demanding users and dual-pump sewage 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 pretreated sewage pumping stations, as well as stations 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, debris). The DNB sewage pump can easily be used to water a garden with rainwater, drain a flooded garage or basement, or transfer water from a pond or ditch to another tank. DNB pumps have stable feet protruding from the pump housing, allowing them to stand on level ground with enough clearance beneath the housing 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,
- 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 controls pump operation and protects it from running dry,
- Thermal protection built into the motor winding,
- 10 m H07RNF power cable with a starter box,
- Warranty and post-warranty service,
- 24-month warranty.
