... ,GERMANY coupling 2.Material:Steel,Brass 3.Thread:BSP,NPT hydraulic quick couplinghydraulic couplerAir quick coupling ,USA ,GERMANY COUPLINGhydraulic quick release ... /83/8”NPT22QHF02-1/21/2”NPT22Quick coupling :1.AdvantagesHigh flow performance with low pressure drop and a multitude of connection ... (-40°C up to +107°C) (Buna-N)6.Air Flow:35 SCFM at 100 PSI pressure with 10 PSI pressure ...