08.09.2026
The versatile solution for installing and managing multilayer, PEX and polybutylene pipework without a press tool.
The widespread adoption of multilayer piping systems has contributed to the increasingly common use of press fittings. This is a reliable, well-established solution in the plumbing and HVAC sector, particularly in new installations.
However, there are many situations in which this type of solution may not be the most practical choice. Maintenance work, modifications to existing systems, repairs, or jobsites where a press tool is not available may require fittings that allow work to be carried out simply and efficiently, without compromising connection reliability.
This is where Itap Multi-Fit fittings come into play.
Designed for installation without a press tool and compatible with multilayer, PEX and polybutylene pipes, Multi-Fit fittings offer a practical advantage on several levels: for installers, they simplify installation and maintenance work on site; for resellers and buyers, they provide a versatile solution suitable for a wide range of applications.
The choice of fitting always depends on the type of installation work being carried out. In new installations, press fittings are a well-established solution, particularly when working on complete systems and when the dedicated equipment is available.
Maintenance work, modifications to existing systems, repairs or jobsites where a press tool is not available require solutions that are practical, quick to handle and suitable even for less-than-ideal working conditions.
In these situations, Itap Multi-Fit fittings provide an effective alternative: they can be installed using hand tools, simplifying preparation and making installation operations more straightforward.
The connection is fully demountable, and the fitting can be reused. This is a significant advantage when the connection needs to be accessed at a later stage, when part of the system needs to be modified, or when the connection needs to be adapted to new operational requirements.
The Itap Multi-Fit range is designed to create reliable connections on different types of pipe without the need for pressing.
The connection system consists of several components designed to work together:
1- nickel-plated brass nut;
2- EPDM O-ring;
3- brass tailpiece;
4- nylon ring;
5- external stainless steel sleeve;
The fitting is also supplied with an NBR seal for flat seats.
During installation, the fitting is inserted into the pipe and then tightened until the threaded section reaches the correct insertion depth. This allows the system to secure the pipe and create a stable connection suitable for both potable water and heating systems.
The range is compatible with multilayer, PEX and polybutylene pipes, providing a high degree of application flexibility and a solution suitable for many common requirements in the plumbing and HVAC sector.
Another important aspect is the use of Multi-Fit fittings in combination with distribution manifolds.
In potable water and heating systems, the manifold distributes the fluid to the different circuits within the system. For this reason, the quality of the connections between the pipe, fitting and manifold is essential to ensure reliable and consistent distribution.
Because the Multi-Fit system does not require pressing, the connection is made without the use of a press sleeve. This helps maintain a stable and reliable connection, supporting continuous fluid flow through the connections to distribution manifolds.
For installers and designers, this means having a connection system designed not only to simplify installation, but also to integrate correctly into the system’s distribution network.
One of the features most appreciated by installers is the simplicity of installation.
Itap Multi-Fit fittings do not require a press tool: the fitting can be installed using a simple hex key, with no need to calibrate the pipe.
This makes it possible to work more quickly, particularly in situations such as:
Reducing the number of operations and tools required simplifies the installer’s work, making interventions more practical and easier to manage, even under less-than-ideal working conditions. This advantage is particularly relevant when connecting to distribution manifolds, where connection quality contributes to the correct management of the system’s individual circuits.
The benefits of Multi-Fit technology are not limited to installation. For resellers and distributors, the fitting’s compatibility with different types of pipe represents an important advantage when managing inventory and developing their product offering.
Having a solution compatible with multiple piping systems makes it possible to:
The sales process can also be simplified. Resellers can offer a solution suitable for many of the most common applications in the plumbing and HVAC sector, helping customers quickly identify the product best suited to the type of pipe and installation work involved.
When choosing a fitting for a domestic water or heating system, ease of installation is only one of the factors to consider. Material quality, operating conditions and the product’s ability to maintain its performance over time are equally important.
Fittings intended for plumbing and HVAC systems must meet specific technical requirements, particularly when used in domestic water systems or installations subject to variations in temperature and pressure.
The Itap Multi-Fit fitting is designed for a maximum operating pressure of 20 bar and operating temperatures ranging from -20 °C to 110 °C, with threaded connections compliant with ISO 228. The product is also DVGW certified and, in the version with an O-ring for conical seats, is also KIWA certified.
Itap Multi-Fit fittings are designed to make installers’ work easier while providing a reliable solution for designers, resellers and end users throughout the life cycle of the system.
| Feature | Specification |
| Compatible pipework | Multilayer, PEX and polybutylene pipes |
| Installation | No press tool required; a hex key is sufficient |
| Pipe calibration | Not required |
| Maximum pressure | 20 bar |
| Operating temperature | From -20 °C to 110 °C |
| Threaded connections | ISO 228 |
| Certifications | DVGW KIWA (with O-ring for conical seats) EMI ZIK TUV Stroytekhnorm |
| Joint | Demountable |
| Fitting | Reusable |
Would you like to learn more about Itap solutions for system connection and distribution?
Discover the complete Itap Multi-Fit range for multilayer, PEX and polybutylene pipes, designed to support reliable and efficient domestic water and heating systems.
Browse the complete range or contact our team for more information about the solutions best suited to your installation requirements.
Itap Multi-Fit fittings are designed to create connections on multilayer, PEX and polybutylene pipes in domestic water and heating systems. They are a useful solution when installation or maintenance work needs to be carried out without a press tool, for example during maintenance, modifications or extensions to existing systems.
No. Itap Multi-Fit fittings can be installed without a press tool, using a simple hexagonal wrench. This feature simplifies installation, particularly in situations where pressing equipment is not available.
Yes. Itap Multi-Fit fittings are suitable for domestic water and heating systems.
They have a maximum operating pressure of 20 bar and an operating temperature range from -20 °C to 110 °C. They can also be used in combination with distribution manifolds. Because no pressing operation is required, the fitting is not deformed during installation, helping to maintain a stable connection and support consistent flow at the manifold connection.
Yes. The connection made with Itap Multi-Fit fittings is easily reversible, and the fitting can be reused. This feature is particularly useful when part of the system needs to be modified or when the connection needs to be adapted during maintenance or other installation work.
For resellers and buyers, the compatibility of Multi-Fit fittings with different types of pipe represents an advantage in inventory management and product offering. A versatile solution makes it possible to reduce the number of SKUs required, simplify logistics and respond more quickly to installers’ requirements.
