... material:brass for different type:DZR,CW617,CZ132,Normal Brass and so on4)Elevated reliability,simple installation technique,requires no special ... made7)Applications:Connecting pipes,suitable for cold water,hot water and gas applications...brass press fitting coupling (union) is made ... brass body,EDPM seal rings,stainless steel SUS 304 sleeve and plastic ring.Brass body material can be CW617N, CW602N, ...