AWWA C512-07 Air-Release, Air/Vacuum, and Combination Air Valves for Waterworks Service (PDF)
SKU: STC_0066318-PDF
This standard describes 1/2-in. (13-mm) through 6-in. (150-mm) air-release valves and 1/2-in. (13mm) through 20-in. (500-mm) air/vacuum valves and combination air valves having gray cast iron, ductile iron, carbon steel, or stainless steel bodies and covers. The valves are designed for use in water or wastewater systems with maximum design pressures of 300 psig (2,070 kPa [gauge]), liquid temperatures ranging from above freezing to a maximum of 125°F (52°C), and a liquid pH greater than 6 and less than 12.
Description
Major changes made to the standard in this revision include the following: added requirements for throttling devices in Sec. 4.3.3; and, added requirements for slow-closing devices in Sec. 4.3.4.