stainless steel quick release coupling connectors B 1.Size:1/2-6 2.Types ... 3.Samples:free samples 4.CE,ISO stainless steel quick release coupling connectors B 1,Material: 304,316,316L,304L, ... Type: NPT, BSPT, BSP, DIN259/299914,Connection Type: screw thread; the other can be equipped with flange connection15,Certificate ... .500.040.0417-209-132-3 stainless steel quick release coupling connectors B