QF1200-500 CIPP Air Pressure Reversing Drum

  In trenchless rehabilitation of underground pipeline networks, diverse pipe diameters have always been a bottleneck for construction efficiency. From small DN60 residential branch pipes to DN500 municipal trunk lines, traditional solutions often require multiple sets of equipment to be repeatedly mobilized and commissioned, which not only extends project timelines but also drives up labor and equipment costs. The air inversion drum QF1200-500 launched by Ergu Optoelectronics tackles this challenge with the concept of "one machine handling it all."

   The QF1200-500 features a wide-range design, enabling a single unit to cover pipe diameters from DN60 to DN500, completely eliminating the frequent switching of multiple equipment sets. Its compact body fully takes into account the spatial constraints of inspection manholes, allowing rapid deployment and quick transition into operational status. Whether for the crisscrossing branch pipe systems within residential communities, or multi-scenario rehabilitation of commercial complexes and municipal pipeline networks, one solution can handle the entire process from start to finish.

Precision pneumatic control: moving from experience to standardization

    The core advantage of the equipment lies in its precise pneumatic control. During the inversion and advancement phase, it delivers stable and balanced air pressure, driving the resin-impregnated liner hose to invert smoothly into the old pipe at a constant speed. Even when encountering minor residual water, slight local offsets or gradual diameter transitions, the stable thrust ensures smooth passage without jamming. Entering the curing and pressure-holding phase, continuous constant pressure causes the liner to expand uniformly and bond tightly to the original pipe wall, forming a dense "pipe-within-a-pipe" structure. Standardized pressure parameters free construction quality from reliance on personal experience, making the entire process controllable and reproducible.

Multi-scenario case studies validating the value of wide-range field performance

    In a comprehensive renovation project for an old residential community, the pipeline network included DN75 residential branch pipes, DN150 building connection pipes, and DN300 community main pipes. Previously, three sets of equipment were required to be brought in repeatedly. With the introduction of the QF1200-500, the same crew used only one unit to work sequentially from branch pipes to main pipes, drastically reducing equipment mobilization time and shortening the overall construction period by approximately 30%. In one section of DN150 pipe with a 2 cm offset and residual water, the inversion hose passed through smoothly under stable air pressure. After pressure-holding and curing, the liner bonded tightly, and CCTV inspection revealed no bulging or wrinkling.In a food and beverage district, during the rehabilitation of grease-laden sewage connection pipes ranging from DN100 to DN300, the equipment rapidly matched the liner material to the pipe diameter and calibrated parameters.

The pneumatic thrust effectively overcame grease resistance, the hose inverted uniformly, and after curing, a smooth and dense corrosion-resistant inner wall was formed, restoring the pipeline's flow capacity A drainage pipeline rehabilitation project in an industrial park particularly showcased the advantage of large diameter spans: the pipeline gradually expanded from DN200 to DN500 and included transition sections. During the advancement phase, the QF1200-500's air pressure adapted automatically, allowing the hose to pass through the diameter transition zone smoothly and without jamming. During the pressure-holding phase, constant pressure ensured full liner expansion and firm bonding to the pipe wall. Acceptance inspection confirmed uniform liner thickness and full compliance of structural strength with standards.

One machine covering the full chain, reshaping rehabilitation efficiency
    The Ergu Optoelectronics air inversion drum QF1200-500 leverages wide-range adaptability and precision pneumatic technology to open up a rehabilitation pathway covering the full diameter range from DN60 to DN500, ensuring every section of liner is uniformly dense and firmly bonded to the pipe wall. Facing complex operating conditions, this solution offers an efficient and cost-effective new path for underground pipeline renewal – with fewer equipment units, lower costs, and more consistent quality.