Pronal, an essential partner for construction professionals
For more than 60 years, Pronal has been designing and manufacturing flexible solutions aimed at improving safety, speed, and execution quality on construction and public works sites.
Thanks to its unique expertise in elastomer and plastomer materials, Pronal offers a wide range of technical equipment designed to simplify formwork, sealing, protection, blocking, and storage operations.
Pronal’s flexible solutions effectively replace traditional rigid devices, providing greater lightness, fast installation, and exceptional durability, while meeting the demands of construction professionals.
1. JB QUALIFIX®: the inflatable manhole formwork
The JB QUALIFIX® is an inflatable formwork designed for the fast and clean sealing of cylindrical manholes. It replaces traditional wooden or metal formwork, which is often heavy and difficult to clean. Made of polyurethane, it ensures perfect watertightness and a uniform finish. Lightweight and reusable, it inflates in just a few minutes and fits the standard diameters of sanitation networks.
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Sealing of manholes for sanitation networks.
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Roadwork, utilities networks (VRD), and urban maintenance.
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Quick interventions requiring safe and efficient installation.
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Enhanced safety: eliminates the risk of falling into inspection chambers.
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Fast installation: setup in less than 5 minutes, stripping in 30 minutes depending on the concrete used and ambient temperature.
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Reusable more than 50 times, reducing costs and environmental impact.
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Technical materials: fabric resistant to abrasion, chemicals, and temperature variations.
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Inflation pressure: 0.2 bar
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Safety pressure: 0.3 bar
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Simplified maintenance: no release agent required.
To learn more about the JB QUALIFIX®, its technical features, and its applications on construction sites : click here
2. Smartshore®, pneumatic trench protection
The Smartshore® is a pneumatic trench protection system designed to secure excavations during work on underground networks. Its lightweight, modular structure deploys quickly without the need for lifting equipment. Each cushion, weighing only 13 kg, provides a 12 kN/m² earth pressure resistance, ensuring reliable wall stability and operator safety.
- Securing trenches for the installation or maintenance of utilities networks (VRD).
- Urban works and emergency interventions.
- Temporary excavations requiring lightweight and modular protection.
- Fast installation: setup in less than 20 minutes.
- Lightweight: 13 kg per cushion, allowing manual handling.
- Operating pressure: 1 bar.
- High mechanical resistance, validated on real worksites.
- Easily transportable in a utility vehicle.
To learn more about the Smartshore®, its design, performance, and installation methods : click here
3. Inflatable gap filler : safety and comfort on walkways
The inflatable gap filler is designed to eliminate empty spaces between a walkway and a fixed structure. It ensures optimal safety for operators working at height or during maintenance operations. Each model is custom-made, according to the site’s spatial and geometric constraints. Available in a flexible tube version or a rigid cushion version, it guarantees stable and durable support.
- Securing industrial, railway, aviation, and construction walkways.
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Maintenance and inspection on trains, aircraft, metros, or heavy vehicles.
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Temporary access work in high-risk areas such as loading docks or scaffolding.
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Flexible version: maximum flexibility.
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Rigid version: enhanced stability.
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Technical materials: reinforced composite fabric coated with polyurethane.
To learn more about the inflatable gap filler, its possible configurations, and its custom options : click here
4. Pneumatic wall stop, inflatable wall end
The pneumatic wall formwork is a flexible formwork designed for the construction of cast-in-place concrete walls. It replaces traditional rigid systems and ensures a uniform and watertight concrete finish. Its inflatable membrane adapts perfectly to the formwork geometry while reducing effort and installation time. Its ease of use and robustness make it a true productivity tool for structural work teams.
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Formwork for load-bearing walls, wall panels, foundations, and concrete structures.
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Civil engineering works and industrial structures.
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High-productivity worksites or projects requiring precise execution.
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Fast inflation: operational in 60 seconds at a pressure of 1 bar.
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High-performance materials : polyamide fabric coated with elastomer, tensile strength > 10 kN/m.
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Weight under 2 kg, allowing easy handling.
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Reduced MSD risks : no rigid parts to handle.
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Reusable up to 100 cycles without performance loss.
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Smooth and watertight finish for optimal concrete quality.
To learn more about the pneumatic wall formwork, its performance, and its operating conditions : click here
5. Inflatable pipe plugs : sealing and pipeline testing
Pronal inflatable pipe plugs are used to block, isolate, or test pipelines. Their design in reinforced vulcanized elastomer provides total watertightness, even under high pressure. Available in a wide range of diameters (30 to 2000 mm), they are suitable for both water networks and pressurized industrial pipelines. The OPL, OPLT, OPV, and OTR models are particularly well suited to the construction sector, where they ensure safe and efficient interventions on networks and infrastructures.
- Leak-tightness tests on sanitation, water, or hydrocarbon networks.
- Temporary isolation of pipelines during repairs.
- Containment operations on technical or industrial networks.
- Allowable pressure up to 25 bar for high-pressure models.
- Multi-layer reinforced rubber structure, resistant to deformation.
- Operating temperature : from –20 °C to +80 °C.
- Watertightness ensured by a double sealing lip.
- Versions with bypass for maintaining flow during tests or for leak-tightness testing.
- High chemical resistance to hydrocarbons and corrosive agents.
To learn more about Pronal inflatable pipe plugs, their models, pressure ranges, and fields of application : click here
6. Flexible tanks, flexible storage solutions for the construction industry
Flexible tanks allow for temporary or permanent storage of liquids such as water, effluents, sludge, or chemical products. They meet a variety of needs, whether for water storage, industrial storage, or civil protection applications. Designed in PVC or nitrile, they offer exceptional resistance to mechanical, chemical, and climatic stresses. Their fast installation, requiring no foundation or civil engineering work, makes them a flexible and efficient solution, suitable for both permanent and temporary uses such as maintenance operations, long-term worksites, or emergency response.
- Raw water storage.
- Retention of industrial liquids or effluents.
- Firefighting reserves and emergency systems.
- Modular capacity from 1 to 1000 m³ depending on the model.
- Fast installation : 4 hours for a 500 m³ tank.
- Materials adapted to each specific need.
- Operating range : from –30 °C to +70 °C.
- Service life over 15 years with minimal maintenance.
- SDIS compliance for firefighting reserve models.
Pour en apprendre plus sur les citernes souples Pronal, leurs capacités, matériaux et configurations disponibles : Cliquez ici
To learn more about Pronal flexible tanks, their capacities, materials, and available configurations : click here
Why choose Pronal solutions for your construction projects ?
Choosing Pronal means choosing a French company that combines efficiency, safety, and performance.
Backed by its strong industrial expertise and patented pneumatic technologies, Pronal supports construction professionals in their daily challenges by reducing installation times, limiting on-site risks, and optimizing quality and operating costs.
A true partner to construction professionals, Pronal is committed every day to delivering safer, faster, and more responsible worksites.
Contact us today to discover our solutions and speak with our experts.