Publisher's Synopsis
"The purpose of this manual is to present a recommended method for calculating operating torque, head loss, and cavitation for quarter-turn valves typically used in water works service. The text provides guidance on generally available methods for using quarter-turn valves as well as their cavitation, flow, and torque characteristics. Information in this manual is useful for technicians and engineers who want a basic understanding of the calculations associated with the use and specification of quarter-turn valves. Prior editions limited this manual to butterfly valves. This fourth edition has been expanded to include information on other quarter-turn valves including ball, rotary cone, and eccentric plug valves"--.
