Butterfly Valves: Torque, Head Loss, and Cavitation Analysis (M49) (Awwa Manual) (American Water Works Association Manual)

This new AWWA Manual of Water Supply Practices provides guidance for using the versatile butterfly valve in water works service. Engineers and technicians will gain a basic understanding of calculations for operating torque, head loss, and cavitation. The manual gives you the recommended methods to help you choose the proper actuator size, avoid valve failure due to internal forces produced by flowing water and pressure, calculate pump head requirements, and prevent undesirable sound and damaging vibration.