Vacuum ValvesVented Ball Valves with Locking Handles Model No.: BVV-38F Pipe Thread AHex in. (mm) Bin. (mm) Cin. (mm) Ein. (mm) Hin. (mm) Lin. (mm) DFlow in. (mm) 3/8″ NPT 0.94 (23.8) 2.03 (51.6) 1.11 (28.2) 3.91 (99.3) 2.47 (62.7) 4.90 (124.5) 0.375 (9.5)