AWWA Manual M51 2016

$54.71

AWWA M51 Air Valves: Air Release, Air/Vacuum, and Combination, Second Edition

Published By	Publication Date	Number of Pages
AWWA	2016	77

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Category: AWWA

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Description

The safe and efficient operation of a liquid piping system is dependent on the continual removal of air and wastewater gases from the liquid piping system. Choosing the proper air valve for the application is critical to all liquid piping systems. This manual provides essential information for selecting, sizing, locating, and installing air valves in water, wastewater and reclaimed water pipeline systems. This revised second edition includes information pertaining to wastewater applications including scouring velocities for larger piping systems, and information on an inflow preventer device installed to protect from malicious tampering, freeze and flood, and to prevent the entry of contaminated water into the potable water distribution system. Operators, technicians, and engineers will use this manual to understand the design, use, application and maintenance of air valves. The air valve types listed in both ANSI/AWWA Standard C512, Air Release Valves, Air/Vacuum, and Combination Air Valves for Water and Wastewater Service and ANSI/AWWA C514, Air Valve and Vent Inflow Preventer Assemblies for Potable Water Distribution System and Storage Facilities are covered. Chapter topics include: locating air valves along a pipeline; design of valve orifice size; water hammer effects; and installation, operation, maintenance, and safety.

PDF Catalog

PDF Pages	PDF Title
1	Cover
3	Copyright
4	Contents
6	Figures
8	Tables
10	Preface
12	Acknowledgments
14	Chapter 1 Introduction Occurrence and Effect of Air and Wastewater Gases in Liquid Piping Systems
16	Sources of Air and Wastewater Gases in Liquid Piping Systems Air and Wastewater Gas Pocket Behavior in Pipelines
17	References
20	Chapter 2 Types of Air Valves Air-Release Valves
21	Air/Vacuum Valves
23	Combination Air Valves
25	Air Valve Optional Devices
30	Chapter 3 Locating Air Valves Along a Liquid Piping System at Filling, Steady State Flow, and Drainage Liquid Piping System Locations
32	Suggested Locations and Type
36	Chapter 4 Design of Valve Orifi ce Size Sizing for Releasing Air and Wastewater Gases Under Pressure
37	Orifice Sizing Method for Releasing Air and Wastewater Gases
39	Sizing for Liquid Piping System Filling
41	Sizing for Liquid Piping System Draining Sizing for Gravity Flow
46	Orifice Sizing for Partial Rupture
47	Sizing for Vacuum Conditions
48	Air-Release Valve Selection
49	Air/Vacuum Valve Selection
50	Combination Air Valve Selection
51	References
54	Chapter 5 Water Hammer Eff ects Air/Vacuum and Combination Air Valves
55	Air Valves at Vertical Turbine or Well Pumps Air Valves in Liquid Piping Systems
57	References
58	Chapter 6 Installation, Operation, Maintenance, and Safety Installation
66	Operation and Maintenance Safety
67	References
68	Bibliography
70	Index
74	AWWA Manuals