The four-pole VT series is designed to pump particularly heavy sewage. Its high capacity and large free passages make it suitable for use in industry, animal husbandry, sludge transport, tanneries and anywhere liquids containing large solids need to be pumped.
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.
What are the advantages of the V4 sewage pump?
The four-pole V4 sewage pump is a professional product for use in municipal and industrial sewer systems, as well as in special pumping stations. Thanks to the large space beneath its Vortex impeller, it can easily pump raw sewage containing solid and fibrous matter; small stones, gravel and rubbish are no problem either. The multi-vane Vortex impeller resists clogging from wipes, strings and kitchen waste. The water vortex that forms beneath and around the impeller keeps much of the solid matter from directly contacting it, so the impeller wears more slowly than channel impellers. The advantage of the radially expanding channels is that solid matter entering through the inlet does not get stuck in the impeller channels, but is expelled and travels along the pump casing wall to the volute.
Control
The V4 sewage pump is primarily a three-phase model with power up to 7.5 kW, but single-phase pumps with power up to 1.5 kW are also available. Three-phase pumps are therefore controlled exclusively by an external signal, while single-phase pumps are controlled by an external signal or a built-in float switch. For controlling V4 pumps, we recommend and offer professional power and control panels with relay-contactor or microprocessor-based control.
Installation
The most common way to install V4 pumps is to mount them on a DUTY or type B coupling foot in raw wastewater pumping stations. Less commonly used are horizontal type A coupling feet or mobile type P installations on a stand. To lower the pump into the pumping station tank along the guide rails, a stainless steel chain or stainless steel cable of suitable strength is used as a lifting sling. It is attached to the holes in the bracket at the top of the pump, allowing the pump to remain properly balanced as it is lowered. When installing the coupling foot, remember to keep the bottom of the tank beneath the pump flat; otherwise, cavitation may occur and hydraulic components may wear out faster.
Features
• Vortex impeller with free passage,
• 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 fitting of an elbow connection for a flexible hose using a clamp or quick connector,
• Built-in float switch that controls pump operation and protects against dry running,
• Built-in T1-T2 thermal protection in the motor winding, for connection to a compatible control panel,
• 10 m H07RNF power cable with a starter box,
• Warranty and post-warranty service,
• 24-month warranty.
Special versions designed to handle liquid temperatures of up to 60°C with the pump fully submerged (not for continuous operation) are available to order.
