Regulacioni ventili za industrijske procese - Deo 3-1: Mere - Ugradne mere za dvosmerne ravne ventile sa prirubnicama i dvosmerne ugaone ventile sa prirubnicama
Industrial-process control valves - Part 3-1: Dimensions - Face-to-face dimensions for flanged, two-way, globe-type, straight pattern and centre-to-face dimensions for flanged, two-way, globe-type, angle pattern control valves