scope:

This standard applies to socket weld-end globe-style control valves, sizes 1/2 inch (15 mm) through 4 inches (100 mm), and screwed-end globe-style control valves, sizes 1/2 inch (15 mm) through 2 1/2 inches (65 mm), having top, top and bottom, port, or cage guiding.

Purpose

The purpose of this standard is to aid users in their piping designs by providing Classes 150 through 2500 socket weld-end control valve dimensions and Classes 150 through 600 screwed-end control dimensions without giving special consideration to the equipment manufacturer to be used.

The short-long dimensions provided in Tables 1 and 2 clarify 2.1 by consolidating the diversity of existing manufacturers' lengths into two sets of dimensions for each size valve. Before using either the short or long dimensions, the piping designer should confirm with the selected valve manufacturer which dimension is correct for the valve(s) being supplied.