Zero Differential Pressure Type Pilot Operated Pilot Operated Direct Operated Orifice diameter Port size Thread 1/8 1/4 3/8 1/2 3/4 1 32A 40A 50A Flange 2 mmo 3 mmo 4.5 mmo 6 mmo 8 mmo 10 mmo 10 mmo 15 mmo 20 mmo 25 mmo 35 mmo 40 mmo 50 mmo 10 mmo 15 mmo 20 mmo 25 mmo VXE2 VXED2 VXEZ2 P.193 P.215 P.229 Body Size Variations between 1/8" to 2" Series 192