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ANSI/ISA-75.08.05-2016 (R2025)
Face-to-Face Dimensions for Buttweld-End Globe-Style Control Valves (Classes 150, 300, 600, 900, 1500, and 2500)
This standard applies to integral flanged globe-style control valves, sizes 15 mm (1/2 inch) through 400 mm (16 inches), having top, top and bottom, port, or cage guiding. Pressure Classes 125 flat face, and 150, 250, 300, and 600 raised face, flanged control valves are included.
The International Society of Automation [isa]