Miniature Vacuum Ball Valves Model #: BVC-12-MF Vacuum ValvesMiniature Ball Valves Model No.: BVC-12-MF Part No. AMale Thread BFemale Thread Orifice in. (mm) Cin. (mm) Din. (mm) Ein. (mm) Fin. (mm) BVC-12-MF 1/2″ NPT 1/2″ NPT 0.394 (10.0) 2.36 (60.0) 0.870 (22.0) 1.02 (26.0) 1.20 (30.5)