Air-Valves: Air-Release, Air/Vacuum and Combination. M Second Edition. Manual of Water Supply Practices. Page 2. AWWA Manual M51 iii. Contents. AWWA M Air Valves: Air Release, Air/Vacuum, and Combination, Second Edition. Handbook / Manual / Guide by American Water Works. A valuable guide for selecting, sizing, locating, and installing air valves in water applications, M51 provides information on air valve types listed in AWWA.

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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.

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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. Organizacion y gestion de empresas.

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