General purpose copper fittings
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General purpose copper soldered connectors - an essential element of the installation
General purpose soldered copper fittings are key components in plumbing and heating systems. Their high quality and reliability are essential for the proper functioning of the installation. At Onninen we offer a wide selection of these products, adapted to the various needs of our customers.
Our offer includes various types of copper connectors. These include:
- Copper elbows with 90° angles in sizes from 10 to 42 mm
- Copper bends 90° and 45° in sizes from 12 to 54 mm
- Copper sleeves in sizes from 12 to 22 mm
Each of these elements has its specific use in installations. Elbows and bends are necessary to change the flow direction, while couplings are used to connect pipes of the same cross-section.
Selecting the right copper soldered connectors
Selecting the right copper connectors is key to the effectiveness of your installation. There are several important factors to consider:
- Diameter of pipes in the installation
- Required angle of flow change
- Operating pressure in the system
- Medium temperature
In our daily practice, we see how important it is to match connectors to the specifics of the project. That is why at Onninen we offer expert advice when selecting products.
Applications of general purpose soldered copper connectors
Soldered copper connectors have a wide range of applications in various industries. They are most often found in:
- Water supply installations
- Heating systems
- Gas installations
- Air conditioning systems
Our experience has shown that copper connectors are particularly valued in projects requiring high durability and corrosion resistance. Their versatility means they can be used in both residential and industrial buildings.
Recently, in a project for a large office complex, we used 22-90° copper elbows and 28-45° copper bends. This allowed for the efficient routing of the heating system, taking into account the complex layout of the rooms.
In the case of office reorganization, we most often use 15-22 mm copper sleeves. They allow easy extension of existing installations without having to replace the entire system.
Quality and reliability of copper soldered connectors
Onninen recommends general purpose copper soldered connectors due to their exceptional durability and reliability. Our products are made of high-quality copper, which guarantees their long-term use without the risk of corrosion or leaks.
Onninen's offer includes products from renowned brands, including our own brands: Onnline and Opal. They guarantee the highest quality of workmanship and compliance with applicable standards.
We often come across questions about the durability of copper connectors. Our observations show that when properly installed and operated, they can last for several decades without the need for replacement.
Many customers ask us about the process of soldering copper connectors. This is a key assembly step that requires the right skills and tools. At Onninen, we offer not only the connectors themselves, but also the necessary accessories for their correct assembly.
General purpose soldered copper connectors are an investment in the safety and efficiency of your installation. Their proper selection and installation guarantee long-term and trouble-free operation of hydraulic and heating systems.
At Onninen, we focus on comprehensive customer service. We offer not only a wide range of products, but also expert technical advice. Our specialists will help you choose the right connectors for a specific project, taking into account its specificity and requirements.
For example, when modernizing an old heating system in a residential building, we advised using 15-90° copper elbows and 18-45° copper bends. This allowed for optimal use of the existing space and efficient routing of new pipes.
Our experience shows that investing in high-quality soldered copper connectors pays off in the form of failure-free operation of the installation for many years. This is particularly important in facilities where interruptions in water or heating supply may generate significant losses.
At Onninen, we ensure that our customers have access to the latest developments in copper connectors. We regularly update our offer with innovative products that meet the growing demands of the market.
Our company also provides after-sales support. In case of any doubts or problems with installation, our experts are ready to provide help and advice. This is part of our comprehensive approach to customer service.
General purpose soldered copper fittings are the foundation of reliable plumbing and heating installations. Their proper selection and installation are crucial for long-term and trouble-free operation of the systems. At Onninen, we are ready to help you implement any project, offering top-quality products and professional technical support.

















































