Double coupling with SC 54 x 2 3/4" bronze / shiny, model 2263 426750

Crimping Fitting with Pipe Thread G

The fitting is made of raw bronze, without any coatings, lacquers, or other surface treatments. This means there are no additional layers that could interfere with the crimping process or affect the tightness of the threaded connection. The material on both sides is identical—bronze—ensuring thermal consistency within the system.

One side is a crimping sleeve, designed for crimping onto copper pipes with a nominal diameter of 1 1/2 inches (DN 40). The other side features a pipe thread G, in accordance with ISO 228/1, not metric. This is a key distinction: the G thread is specifically designed for pipe connections, not for screw-type fasteners. There is no M thread here.

Sealing is provided by an EPDM gasket—an elastomer resistant to temperatures from -25°C to 110°C and pressures up to 16 bar at 20°C. The manufacturer's description confirms the presence of both an "EPDM sealing element" and an "EPDM flat seal," suggesting that the gasket functions both as an axial seal during crimping and as a flat seal when the thread is tightened.

The nut is an integral part of the fitting. As stated in the manufacturer's description, it is made of brass. It serves to tighten the threaded component and maintain the tightness of the connection without the need for additional seals.

Length: 56 mm. Arc angle: 0°—meaning it is straight, without any bend. There is no drain valve or air vent. The fitting requires no additional mounting components beyond a standard crimping tool and a wrench for the thread.