American Water Works Association

Butterfly Valves: Torque, Head Loss, and Cavitation Analysis (M49) (Awwa Manuals) American Water Works Association 2nd edition

Updated from the 2001 edition, this new manual has expanded equations for eccentricity torque, added torque sign conventions and double offset disc design variables. Water operators receive complete information about the versatile butterfly valve in drinking water service. Engineers and technicians will gain a basic understanding of calculations for operating torque, head loss, and cavitation. Coverage includes valve design, torque, head loss, cavitation, testing, noise, and vibration. (