Typical challenges - and how we solve them
Raw water is the starting material for drinking water treatment. With Comprex®, we ensure that your raw water pipes from the well to the waterworks remain free of deposits. This ensures the full performance of your systems with minimal flushing effort.
The problem
Raw water contains substances that form deposits in pipes, especially during periods of stagnation. Iron and manganese compounds constrict the pipe cross-section, impair the flow and thus reduce the delivery rate. This puts a strain on the pumps, increases energy consumption and threatens supply bottlenecks.
The solution
With targeted pulses of compressed air and water, Comprex® powerfully loosens deposits at up to 70 km/h and reliably removes them – without chemical additives and with minimal water consumption. Depending on the nominal size, we combine the power of one or more Comprex® units.
Typical areas of application in water extraction:
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Well lines
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Raw water pipes
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Waterworks – distribution
The result
The raw water and well pipes are gently cleaned. This restores the original flow capacity and stabilizes operation in the long term. You save energy and costs, maintain your profitability – and all without harming the environment.
How Comprex® changes your network quality in the long term
Comprex® brings to light what would otherwise remain hidden: Deposits and incrustations that impair the flow rate of your pipes. With our pulse cleaning, these substances are mobilized efficiently and without chemicals.

Before and after cleaning: Semi-solid iron sludge in a raw water pipe

Sludge discharge from a
raw water pipe

Iron sludge from a well water pipe
Benefit from the Comprex® advantages now!
Whether drinking water and waste water in municipalities, industrial piping systems or water pipes in buildings – each area has its own requirements. We work with you to develop a tailor-made cleaning solution that works, saves resources and delivers lasting results.
Fast, thorough, resource-saving - without chemicals
Up to 80% shorter
Up to 100x stronger
Up to 90% less
Up to 10x faster
3 steps to a clean line
Step 1 Analysis & planning
We work with you to plan the optimum cleaning operation, which is individually tailored to your business, the condition of the pipes and your objectives. We will also clarify whether one or more comprex units should be used.
Step 2 Preparation
We take care of planning the cleaning sections, determining the entry and exit points and handling the entire logistics process for you.
Our team of technicians will come to you with the appropriate equipment and remain on site for the duration of the project.
Details on our mobile cleaning systems and self-sufficient trailers for different nominal widths can be found here.
Step 3 Cleaning & commissioning
Cleaning is carried out using pulses of compressed air and water(Comprex®), which are introduced specifically into the section to be cleaned. Deposits are reliably removed – without chemicals and with minimal water consumption. Once the cleaning measures have been completed, we return the system to regular operation ready for use.
Fast, professional and ready for use: you book our service and our experienced team of technicians will come to you with the necessary equipment and carry out the cleaning for you – whether as a one-off or regularly as part of your maintenance concept.
Would you like to be independent and clean your pipe systems individually and regularly or integrate your own Comprex® cleaning system into your operational processes? No problem, whether mobile or stationary – we have the right system for you and will train your staff.
"I wouldn't have believed it if I hadn't seen it myself at the Landau test center. In detailed trials cleaning our products in test pipelines, we reached up to 60% savings in cleaning time and up to 90% in water consumption."
"The MCU-300 from Hammann represents an important component of our innovative industrial hygiene concept. The system is used at Meffert AG both for flushing pipelines and for cleaning stand-alone systems.
The cooperation with the colleagues from Hammann has worked very well since the beginning of the project.
Project planning and commissioning were transparent and professional. All inquiries are processed promptly, and ideas and optimization requests are discussed openly with our technical department even months after commissioning.
The MCU300 is intuitive for our employees to operate, can be used almost anywhere due to its dimensions, and works very reliably."
"Before flushing the main pumping station, we had a pump runtime of almost 20 hours and a pumping capacity of 250 m³ of wastewater. As a result of the flushing action, we were able to determine that on some days we achieve a pumping capacity of 270 m³ of wastewater with a pump runtime of 15 hours. This clearly shows an improvement in the efficiency of our system.
"It is no longer possible to imagine our maintenance of injection molds without the cleaning technology from HAMMANN. The Comprex® cleaning is without alternative in very many applications. Thank you for the excellent and pragmatic service."
"The Hammann company was commissioned to clean the stainless steel gas pipe using their Comprex process. Success was already evident when the cleaning was carried out, as the escaping rinse water was heavily contaminated.
After cleaning and recommissioning, the aforementioned pressure fluctuations did not occur again. It was not easy to create the necessary inlet and outlet to the gas pipeline. It is also problematic to take a gas pipeline out of service for a longer period of time when there is no redundancy. Nevertheless, the effort was worth it, as the cleaning has had the desired effect."
"Our initial skepticism that comprex could be too intense for our piping system was unfounded. The pulse pressure always remains below the network pressure and so we don't have to worry about pipe bursts due to excessive pressure. The pulse flushing process can reduce the deposits in our old network so significantly that maintenance is absolutely economically viable compared to replacement."
"Our conclusion: The test of the Comprex® unit can be rated as thoroughly positive. The cleaning effect can be seen as very good, in some cases even blockages could be loosened. Due to the rather simple operation, the unit could be operated without any problems after the short instruction. No problems were encountered during the test phase.
At this point, we would like to thank you again for the test opportunity and the trust you have placed in us."
"We have had very good experiences with comprex and are very satisfied with the cooperation that has grown over the years. The Hammann GmbH technicians know our network, arrangements are quick and uncomplicated and the assignments are already a fixed part of our annual planning for network maintenance."
More specialist articles – Kommunal
Overview of practical examples – Raw water
Overview of practical examples – Water distribution extraQt®
Overview of practical examples – Comprex® water distribution
Discover our other municipal applications
Frequently asked questions about cleaning well and raw water pipes
How does cleaning with Comprex® work?
The patented process uses targeted air-water pulses that move through the pipes at high speed (up to 70 km/h). This creates strong shear forces that loosen deposits and biofilms – without chemicals and with minimal water consumption.
Is cleaning with Comprex® suitable for all types of pipes?
Yes – Comprex® is suitable for a wide variety of pipe systems: from transport and distribution pipes to connecting pipes. The method is effective regardless of material and age and also cleans older pipe networks reliably and gently.
Can cleaning be carried out during operation?
The affected line is out of service during cleaning. The measure is carefully planned in advance so that operations can either be maintained by means of switchovers or interrupted in a targeted manner – with minimal impact on the supply.
How long does cleaning take?
This depends on the condition, the amount of deposits and the size and length of the pipes. A cleaning section usually takes a few hours. Thanks to our mobile technology, we are very flexible and efficient in our work.
What distinguishes Comprex® from a normal water flush?
The pulses are much more powerful, generate higher flow rates and dissolve deposits more effectively – while using less water and without chemical additives.





