stainless steel quick release coupling connectors B 1.Size:1/2-6 2.Types: A,B ... :free samples 4.CE,ISO stainless steel quick release coupling connectors B 1,Material: 304,316,316L,304L,CF8,CF8M ... 13,Thread Type: NPT, BSPT, BSP, DIN259/299914,Connection Type: screw thread; the other can be equipped with flange connection15,Certificate ... .0417-209-132-3 stainless steel quick release coupling connectors B