Georg Fischer. Primofit. Repair piece, long, galvanised version. The fittings made of malleable cast iron are available in a black and thermally galvanised version. Due to the durable nature of these fittings and the high mechanical stress and temperature resistance, these fittings are frequently used. The thread is a universal, EN 10226-1 standardised connection that guarantees safe use across a wide range of applications. In addition to the threaded fittings, a compression coupling made of malleable cast iron is available. This fitting, which is sold under the brand name PRIMOFIT, is available in a black and thermally galvanised version. It offers a time-saving connection of steel, PE, lead and stamped steel pipes.