Butterfly Valves

Butterfly Valves

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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. (... allowances for in-service degradation, and/or safety factors for power (electric motor, cylinder, or vane) actuators are discussed in other ... These include valve engineering handbooks, published research papers, and valve supplier manuals or bulletins. ... The user is cautioned to evaluate and convert such data to the proper format and units of measure. ... Choking considerations add additional calculations and difficulty to the methodology but do not critically affect the results of mostanbsp;...

Title:Butterfly Valves
Author: American Water Works Association, Bayard E. Bosserman, Amzad Ali, Irving M. Schuraytz
Publisher:American Water Works Association - 2012

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