Historical
ANSI/ISA 75.08.03-2001
Face-to-Face Dimensions for Socket Weld-End and Screwed-End Globe-Style Control Valves (Classes 150, 300, 600, 900, 1500, and 2500) (Formerly ANSI/ISA 75.12-1993)
This standard applies to socket weld-end globe-style control valves, sizes 1/2 in (15mm) through 4 in (100mm), and screwed-end globe-style control vales, sizes 1/2 in (15 mm) through 2 1/2 in (65mm)
The International Society of Automation [isa]