The 4- and 6-pole A4-A6 sewage pumps are designed to pump and convey clear liquids and wastewater. Their wide operating range and excellent hydraulic performance make these series particularly suitable for wastewater treatment plants, sewer systems, livestock farming, and industrial pipelines, such as those at airports, in metro systems, hospitals, and hotels.
Specifications
All main components are made of GG25 cast iron. Two separate mechanical seals (the motor side in the oil chamber and the impeller side in contact with the liquid), together with high-quality components, ensure excellent performance and product reliability.
Advantages of A4-A6 sewage pumps
DRENO four- and six-pole raw sewage pumps are professional products designed for municipal and industrial sewer systems, as well as specialized pumping stations. Thanks to the large clearance in the impeller channel, they can easily pump raw sewage containing solid and fibrous matter; small stones, gravel, and other debris are no problem either. The single-vane, enclosed impeller resists clogging from wipes, strings, and kitchen waste. A key advantage of single-channel impellers in sewage pumps is that solids entering through the inlet do not split the flow in the impeller. Instead, the entire contents are discharged and travel along the pump casing wall to the outlet.
Control
The A4 and A6 raw sewage pumps are high-powered models, ranging from 10 to 60 kW, and are available only in three-phase versions. Therefore, the pumps are controlled by an external signal. To control A4 and A6 pumps, we recommend and offer professional power and control panels with relay-contactor or microprocessor-based controls. These can also send SMS notifications about faults and provide online monitoring.
Installation
The most common way to install pumps in sewage systems is to mount them on a type A or type B coupling elbow in raw sewage or stormwater pumping stations. Mobile installations on a type P stand are used less frequently. A stainless steel chain or stainless steel cable of suitable strength is used to lower the pump along guide rails into the pumping station tank. It is attached to holes in the handle at the top of the pump, ensuring the pump remains properly balanced while being lowered. When installing the coupling foot, make sure the tank floor beneath the pump is flat; otherwise, cavitation may occur, leading to faster wear.
Features
• High-efficiency, enclosed single-channel impeller,
• Moisture sensor in the oil chamber protects the motor from water ingress if the mechanical seal behind the impeller is damaged,
• Side flange outlet allows installation on a coupling foot and easy connection of an elbow fitting to a flexible hose using a hose clamp or quick coupling,
• T1-T2 thermal protection built into the motor winding, for connection to a suitable control panel,
• 10 m H07RNF power cable with bare wire ends,
• Warranty and post-warranty service,
• 24-month warranty.
Special versions for liquid temperatures up to 60°C with the pump fully submerged (not for continuous operation) are available on request.
