Fretz Kanal-Service AG: A Company with Tradition and Expertise
Fretz Kanal-Service AG, founded in 1954 as a family business, has become one of Switzerland’s leading providers for cleaning, maintenance, inspection, and rehabilitation of wastewater channels. With around 110 employees at three locations, the company excels in its field, offering high-quality services, reliability, and competitive pricing. Their strong focus on meeting customer needs and maintaining high standards has been key to their continuous growth and success.
Customer-Centric Approach as the Key to Business Success
The success of Fretz Kanal-Service AG is largely based on their strong customer focus. As project manager Mr. Rast highlights, the company aligns its services to meet client needs, emphasizing high quality, punctuality, and competitive pricing. This approach has been crucial in driving the company’s continuous growth and solidifying its leading position in the industry.
Efficient Wastewater Management as a Central Challenge
A key factor in the smooth operation of construction projects is efficient wastewater management. In 2017, Mr. Rast introduced hydraulic 4-inch HEPP2 high-performance submersible pumps for diverting wastewater in channels with smaller diameters, up to 600 mm (23.6 inches). These compact pumps, with a capacity of up to 63 liters per second (1000 US gallons per minute) and a weight of only 27.7 kg (61 lbs), allow continuous operation, significantly reducing setup times and adapting to varying wastewater volumes.
Flexibility and Efficiency through Modern Pumps
Fretz Kanal-Service AG uses modern pumps that provide both flexibility and efficiency. They are powered by a 13 kW gasoline unit or a frequency-controlled electric unit, weighing 150-180 kg (330-396 lbs). These pumps allow precise control of flow rates. During tests, the pumping capacity was easily adjusted without interrupting operations. This ensures a smooth workflow even when wastewater volumes fluctuate.
Expansion to Medium and Large Channel Profiles
Following positive experiences with smaller channels, the procedure was expanded to medium and large channel profiles. Depending on the wastewater volume requirements, a doubling of the pumping capacity proved optimal. One to three 4-inch HEPP2 mono submersible pumps are used, and the number of pumps dictates the need for additional hydraulic units, increasing the logistical effort.
2023: Introduction of the HEPP2 5-Inch Dual Submersible Pump
In 2023, Fretz Kanal-Service AG introduced the patented HEPP2 5-inch dual submersible pump. Weighing only 29 kg (64 lbs), it delivers a significantly higher maximum capacity of up to 126 liters per second (2000 US gallons per minute). The ability to connect two 5-inch hoses reduces the number of required pumps and hydraulic units, lowering logistical effort and costs, while offering increased flexibility and efficiency in wastewater management.
Advantages of the New Pump Technology
The new HEPP2 5-inch dual submersible pump offers several benefits, including higher capacity with up to 126 liters per second (2000 US gallons per minute) while maintaining a lightweight design. It reduces the number of pumps and hydraulic units required, cutting logistical costs. Additionally, it allows the use of smaller hoses (2-, 3-, or 4-inch), increasing flexibility. The technology also ensures 24/7 operation without clogging, improving reliability and lowering maintenance needs.
Reliability and Reduced Clogging Rates
The HEPP2 dual submersible pumps have proven to be highly reliable, with no technical failures since 2017. They significantly reduce clogging rates, lowering the likelihood of blockages by 90%. This reliability minimizes downtime and ensures consistent performance in challenging wastewater environments, making them an efficient solution for industrial and municipal projects.
More Efficient Wastewater Management with New Pump Technology
The new pump technology implemented by Fretz Kanal-Service AG has greatly improved wastewater management efficiency. With the HEPP2 dual submersible pumps, fewer pumps are required, significantly reducing logistical complexity and costs. The system is flexible and adaptable to various flow volumes, ensuring that even large-scale projects can be managed effectively with fewer resources. This innovative approach enhances overall operational efficiency and reliability.
Success in Complex Projects
Fretz Kanal-Service AG has achieved remarkable success in handling complex projects using the HEPP2 pump technology. For example, in a large egg-shaped channel rehabilitation in Basel-Stadt, where 228 liters per second (3600 US gallons per minute) of wastewater diversion was required, the company deployed a combination of 5-inch dual and 4-inch mono submersible pumps. This system effectively handled peak flow rates, demonstrating both the flexibility and reliability of the HEPP2 technology for large-scale operations.
Impressive Performance Under Load
The HEPP2 submersible pumps deliver outstanding performance even under heavy loads. In a recent project, the system handled peak wastewater flow rates of up to 310 liters per second (4900 US gallons per minute) without any issues. This demonstrates the pumps’ reliability and capacity to manage high-pressure situations, ensuring smooth operation even in the most demanding environments. Their ability to perform consistently under load makes them ideal for large-scale and complex projects.
Economic Efficiency and Future-Proofing
The HEPP2 dual submersible pump technology offers significant cost-effectiveness and long-term reliability. Its modular design allows for easy part replacement, reducing maintenance expenses. By combining flexibility and high performance, the pump system adapts to both current needs and future demands, ensuring sustainable use. This makes it an ideal investment, reducing operational costs while meeting high standards in complex projects.
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For an overview Submersible Pumps
Technical Information 5-inch Hepp2 Dual Submersible Pumps
Dimensions, Weight
Perfomance Curve
Technical Data Overview 5-inch HEPP2 Dual Submersible Pump
| Performance | |
|---|---|
| Max Flow Rate: | ≤ 126 l/s (2,000 USGPM) |
| Max Solid Diameter: | ≤ 74 mm (2.9 inches) |
| Max Head: | ≤34 m (112 ft) |
| Weight/Dimensions | |
| Weight: | 29 kg (64 lbs) |
| Pump Diameter: | 500 mm (19.7 inches) |
| Pump Height: | 400 mm (15.7 inches) |
| Top Features | |
| Flexible Outlets in Dual Mode (2 hoses) | 2/3/4/5 Inch |
| Flexible Outlets in Mono Mode (1 hose) | 2/3/4/5 Inch |
| Suitable for Dirty Water | Yes |
| Dry Running 24/7 | Yes |
| Maintenance-Free | Yes |
| Explosion-Proof | Yes |
| Max Medium Temperature | ≤ 80°C (176°F) |
| Suction Operation | Yes |
| Free-Flow/Vortex | Yes |
| Optional Features | |
| Ductile Iron | No |
| Atex (2014/34/EU: II 2G EX C IIA T6) | Yes |
Patent pending
| (1)Patent Pending | |
|---|---|
| Switzerland | CH000493 / 2023 |
| Europe | 24174242.8 |
| USA | 18/658,467 |
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