This document applies to valves@ sizes NPS ? (DN 15) through NPS 26 (DN 650)@ of the clamp or pinch valve design incorporating clamp or pinch elements. Purpose The purpose of this document is to aid users in their piping design by providing installed face-toface dimensions for control valves@ incorporating clamp or pinch elements@ which have flanges that mate with ANSI B16.1 Class 125 and/or ANSI B16.5 Class 150 flanges@ without giving special consideration to the manufacturer of the equipment to be used. This document applies to handwheel-operated pinch valves Classes 125 and 150 and excludes solenoid-actuated valves and direct fluid-actuated valves.