brass pipe fittings for threaded pipe and PEX pipe, female thread DN15, DN20, DN25, PEX coupling 16mm forged brass CW614, CW617n Brass forged PEX pipe fittings, coupling, A-8608, threaded connector DN15 ... , DN20 and DN25, BSPP threaded, ISO228 parellel thread or NPT thread. PEX coupling ...