... adaptor, coupler, hose shank, dust cap, dust plug Type A Adaptor FemaleType B Coupler Male Type C Coupler Hose ShankType D Coupler ... Stainless Steel; Gasket: Buna(NBR), Viton, Teflon;3. Application: For Oil, Petroleum, Chemical, Water, Gas and general chemical service;4 ... Material, Casting , Machining and Final Inspection.100% final check for every valve can be guaranteedSUPERIORITY1/2"-6" NPT/BSP/DIN ...