Brand: NITRA Item: Exhaust silencer Connection: 1/2in male NPT Material: Aluminum Working Fluid: Air or inert gas Maximum Operating Pressure: 250 psi (17 bar) Flow Coefficient: 5.9 Exhaust Silencer Type: Cylindrical NITRA pneumatic exhaust silencer, aluminum, cylindrical, Cv=5.9, 1/2in male NPT.