Slip coupling Steel Sprinkler - 22 1511080001

Application and Function in Fire Protection Systems

The Steel Sprinkler sliding coupling with a 22 mm diameter is a key component of steel piping systems dedicated to sprinkler installations. Its primary function is to connect steel pipes in a way that allows free axial movement prior to final crimping. This design is invaluable during installation when it is necessary to compensate for minor dimensional inaccuracies in the pipes or to adapt to the existing installation geometry without the need to cut components "to the millimeter." This provides installers with significant flexibility and reduces the risk of errors when joining rigid sections to a minimum.

The component is made of galvanized steel (Fe/Zn88), ensuring corrosion resistance in humid environments typical of technical or storage rooms where fire suppression systems are often installed. The zinc layer thickness ranges from 8 to 15 µm, guaranteeing long-term protection of the metal against rust throughout the operational life of the installation. Sealing relies on a high-quality O-ring, which ensures joint tightness even before permanent locking.

Installation Safety and LBP Function

One of the most important features of this coupling is the built-in LBP (Leak Before Press) function. This is a controlled leak signaling system operating on a simple physical mechanism. If the installer forgets to crimp the joint or does so incorrectly, the O-ring seal will not be fully compressed, allowing water (or test medium) to leak in a controlled manner through a special hole in the coupling body.

Thanks to this solution:

• Hidden failures are avoided: Before commissioning the installation, the tightness of each individual joint can be easily checked without dismantling the entire network.
• Safety is increased: The system signals installation errors immediately after the installation is filled with water, before full operating pressure is reached.
• Acceptance time is shortened: Inspectors can quickly verify the correctness of the work, accelerating the technical acceptance process of the entire fire protection installation.

Installation is performed using standard crimping tools dedicated to the KAN-therm Steel system. The process is fast and does not require open flame or welding, which is crucial in finished facilities or during renovation works in multi-family and office buildings. After crimping, the joint becomes permanent and rigid, capable of operating under high pressure (up to 25 bar) and temperatures up to 200°C.

Material Construction and Operating Conditions

The reliability of this component depends on the materials used in its production and the specifics of installation. The body is made of galvanized steel (Fe/Zn88) with a zinc layer thickness of 8–15 µm, ensuring corrosion resistance in harsh environmental conditions. The connection is made by crimping using dedicated tools, eliminating the need for threads or welding.

In practice, this means the coupling features a simple shape designed for joining pipes in a straight line with the possibility of axial movement before compression. Thanks to the O-ring, sealing is effective even before crimping due to the LBP function. The product is suitable for both sprinkler installations and closed pressure circuits (e.g., heating systems), operating at working pressures up to 25 bar and temperatures up to 200°C – even in systems requiring high thermal and pressure resistance. Such construction makes the coupling an ideal choice for both new fire suppression installations and modernizations of existing steel piping networks, where precision and safety are priorities.