Miniature Vacuum Ball Valves Model #: BVC-38-MF Vacuum ValvesMiniature Ball Valves Model No.: BVC-38-MF Part No. AMale Thread BFemale Thread Orifice in. (mm) Cin. (mm) Din. (mm) Ein. (mm) Fin. (mm) BVC-38-MF 3/8″ NPT 3/8″ NPT 0.315 (8.0) 1.81 (46.0) 0.709 (18.0) 0.75 (19.0) 0.83 (21.0)