Union nut Specification: DN10-DN150, 1/2"-6", larger size can be customized Materials: AISI304, AISI304L, AISI316, AISI316L Union nut(ISO9001: ... 2008, CE, TUV certified) Specification: DN10-DN150, 1/2"-6", larger ... diaphragm valve, safety valve, union parts, ferrule, end cap, nut, clamp, elbow, tee, cross, reducer, sight glass, manhole ...