331 3/4" Union black MF

Thread pipe fitting from malleable cast iron, kind – direct union with flat seat with inner x outer tubular threads, black design. Connecting outer thread R and inner thread Rc is conical for sealing of joints on the threads according of norm ISO 7-1, fixate thread of nut G is cylindrical for loose of joints on threads according of norm ISO 228-1. It consist of three parts: 370 ( direct socket ) + 374 ( cap nut ) + 371 ( supporting socket with inner thread ). Produced according of norm EN 10242, mark U2. Attention: union should use like built-up of complex only, because individual parts of the union with different production marks or individual parts of different types and same production marks can’t be compatible! Using: Intended for distribution of water, air, gas, nonabrassive and nonaggressive fluid to allowed press 25 bar and temperature from -20 to 120°C, with necessity of prevention for freezing of media.