... round or hexagon typeA completed union was composed of nut,liner,male,seal ring. We also supply seperate ... parts such as: nut,liner,male,blind cap with chain,blind cap etc ... diaphragm valve,safety valve,union parts,ferrule,end cap,nut,clamp,elbow,tee,cross,reducer,sight glass,manhole ... arc welding machine and so on. Stainless steel sanitary union sanitary pipe fittings