AWWA M49
Butterfly Valves: Torque, Head Loss, and Cavitation Analysis
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| Organization: | AWWA |
| Publication Date: | 1 January 2001 |
| Status: | inactive |
| Page Count: | 52 |
scope:
Introduction
Torque, head loss, and cavitation are important considerations in the selection and sizing of butterfly valves in water systems. Butterfly valve components must be able to withstand the forces and torques generated during use, and the actuator must allow operation and seating of the valve. The head loss developed across any valve adds to the energy costs of a pumping system. Cavitation can damage a valve or adjacent piping if not controlled.
The topics in this introductory chapter include an explanation of basic butterfly valve design elements and their role in predicting torque, head loss, and cavitation.
Document History
January 1, 2017
Quarter-Turn Valves: Head Loss, Torque, and Cavitation Analysis
The fluid flow and torque calculations are based on water or wastewater flow and do not specifically relate to other liquids or gases. The adjustments for application to other fluids can be found in...
January 1, 2012
Butterfly Valves: Torque, Head Loss, and Cavitation Analysis
Preface
The purpose of this manual is to present a recommended method for calculating operating torque, head loss, and cavitation for butterfly valves typically used in water works service. It is a...
AWWA M49
January 1, 2001
Butterfly Valves: Torque, Head Loss, and Cavitation Analysis
Introduction
Torque, head loss, and cavitation are important considerations in the selection and sizing of butterfly valves in water systems. Butterfly valve components must be able to withstand the...