... -5AC8, CS400ING-6AC8, CS400ING-8AC8, and CS400ING-8CC8 With Internal Relief: 1-1/4-inch FNPT Body: Types CS400IRG-8BC6 ... (Casing)25 psig / 1,7 barMaximum Outlet Pressure to Avoid Internal Parts Damage5 psig / 0,35 bar over setpointMaximum Operating Outlet ... to 0,50 barConnections: Slam-shut Vent: 1/4 NPT External Sensing Line: 1/4 NPTCasing Material: AluminumPressure Registration: Internal or External