This document applies to valves@ sizes 1 inch through 26 inches@ of the clamp or pinch valve design@ incorporating clamp or pinch elements. Purpose The purpose of this document is to establish requirements for clamp or pinch valves. The following requirements are established: a) Tests for pressure retaining parts and shutoff integrity prior to shipment b) Marking requirements c) Procedures for determining the flow coefficient and other related sizing factors This document excludes solenoid actuated valves and direct fluid actuated valves.