QS fittings
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QS fittings - essential hydraulic components in the Onninen offer
QS fittings are key components of hydraulic systems . Our offer includes a wide selection of these elements. They are essential in many installations. They ensure correct connections of pipes and devices. At Onninen we attach great importance to the quality of QS fittings . We know how important a role they play in hydraulic systems.
We offer various types of QS fittings. These include elbows, tees and reductions. We also have cleaners, sockets and electrofusion sleeves. All are made of high-quality materials. The most commonly used is PEHD, or high-density polyethylene. It is resistant to corrosion and mechanical damage.
Types and applications of QS fittings in hydraulic installations
QS fittings have many applications in hydraulics. PEHD elbows enable changing the flow direction. Reductions connect pipes of different diameters. Electrofusion sleeves provide tight connections. Each element has its unique function in the system .
In our offer you will find QS fittings of renowned brands. Among them are products of our own brands. These are Onnline, FXA and Opal. We also offer products of other renowned manufacturers. All of them meet rigorous quality standards.
- PEHD elbows 90° and 45° to change the flow direction
- Equal and reducing tees for branches
- PEHD reductions for connecting pipes of different diameters
- Electrofusion couplings for tight connections
- PEHD sockets for pipe ends
- PEHD cleaners for easy maintenance of installations
Selecting the right QS fittings is key to system efficiency . Several important factors must be considered. These include: pipe diameter, operating pressure and type of medium. The operating conditions of the installation are also important. Our consultants will be happy to help you choose the optimal solutions.
Practical applications of QS fittings in hydraulic projects
In everyday practice, we see various applications of QS fittings. We recently completed a project for a large industrial plant. We used hundreds of PEHD elbows and tees there. This allowed us to create a complex network of pipelines. The system has been operating without failure for many months.
Another example is the modernization of the municipal water supply network. We used electrofusion sleeves there. They ensured tight connections on critical sections. This minimized the risk of leaks and failures. QS shapes play a key role in such projects .
We often come across questions about the durability of QS fittings. Our experience shows that they are very durable. Properly selected and installed, they serve for many years. They do not require any special maintenance. This is an important advantage in the context of long-term investments.
- Analysis of customer needs and installation specifics
- Selection of appropriate QS fittings
- Ensuring compatibility with existing system
- Installation according to the manufacturer's instructions
- Leak and performance tests
At Onninen we offer comprehensive support at every stage of the project . Our specialists will advise you on the selection of QS fittings. They will also help you plan the installation. We ensure quick order fulfillment. We deliver the highest quality products.
Innovations and trends in the QS fittings category
The hydraulics industry is constantly developing. New solutions appear in the QS fittings category. Composite materials are increasingly used. They are lighter and more resistant to corrosion. Another trend is the use of butt welding technology. It provides even greater tightness of connections.
At Onninen we are always up to date with the latest trends . We regularly update our range of QS fittings. We introduce innovative products. At the same time, we ensure the availability of proven, classic solutions. This allows us to meet the diverse needs of our customers.
Many customers ask us about the ecological aspects of QS fittings. This is an important topic in the context of sustainable development. We offer products made of recyclable materials. We also promote energy-saving solutions. An example is QS fittings with optimized geometry. They reduce flow resistance in the installation.
In the case of modernization of older hydraulic systems, QS fittings play a key role. They allow for effective connection of new elements with existing infrastructure. Our consultants will help in selecting the right products. They will also provide technical support during the implementation of the project.
Onninen recommends the use of comprehensive solutions in the QS fittings category . This ensures better compatibility and system efficiency. In our offer you will find a full range of necessary elements. These are not only the fittings themselves, but also the tools for their assembly. We also offer training in the correct selection and installation of QS fittings.
We invite you to contact our specialists. They will help you select the optimal QS fittings for your project. They will provide expert advice and technical support. Together we will create an efficient and reliable hydraulic system.

















