Raccord GW Steel Sprinkler - 28 Rp1/2" 1511044006

Application and Construction in Fire Protection Systems

This steel coupling has been specifically designed for sprinkler installations, where connection reliability is critical to building safety. Unlike standard fittings, this product combines two different connection methods: on one side, it features a press-fit sleeve for rapid installation using a pressing tool, while the other side is equipped with a 1/2-inch tapered external thread (BSPT-R). This configuration enables a seamless transition from press-fit piping systems to traditional threaded fittings, commonly encountered when connecting sprinkler heads or control valves.

The material is galvanized steel (Fe/Zn88), ensuring corrosion resistance in installation environments. The zinc coating thickness ranges from 8 to 15 µm, which is sufficient for most internal and external applications in fire protection systems. A key structural element is the O-ring seal, which guarantees the tightness of the press-fit connection without requiring additional sealing pastes or tapes at this part of the fitting.

Controlled Leak Function (LBP) and Installation Safety

The most distinguishing feature of this model is the Leak Before Press (LBP) function. This is a critical solution for installers working on fire protection systems. It allows for a leak test of the entire circuit under water or air pressure before properly pressing the fitting.

• If the connection is not correctly assembled or the pipe is damaged, water will begin to seep through a special channel in the seal even before pressing.

• The installer observes this leak and can immediately correct the installation without having to drain the entire circuit or disassemble other components.

• Only after confirming that everything is perfectly seated does the pressing process occur, permanently locking the connection and eliminating any possibility of further leakage.

Technical parameters of this model include a press-fit sleeve connection and a tapered external thread BSPT-R compliant with ISO 7-1, with a nominal diameter of 1/2 inch (DN 15). The entire unit is made of galvanized steel Fe/Zn88 with a zinc coating thickness of 8–15 µm, and the sealing relies on an O-ring equipped with the LBP function. These technical specifications define the product as a dedicated component for sprinkler systems (Sprinkler).

Installation and System Compatibility

Installation of this fitting requires the use of dedicated pressing heads compatible with the KAN-therm Steel Sprinkler system. The process is fast and repeatable: simply place the fitting onto a steel pipe of the appropriate diameter (in this case, suitable for nominal 28 mm pipes), verify tightness using the LBP function, and then perform the pressing. The tapered thread on the other side allows for tightening of the fitting without the need for Teflon tape or hemp, as the thread profile itself ensures tightness when tightened with the correct torque.

This product perfectly meets the requirements of modern fire protection installations, where installation time and operational reliability are priorities. The steel construction provides the mechanical strength necessary in case of vibrations or mechanical impacts, while maintaining aesthetics thanks to the galvanized coating. It is a universal solution, suitable both for upgrading existing installations and for constructing new fire protection systems in industrial and public buildings.