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A device used to remove air from the system fluid. Air reduces the efficiency in PHA systems and can
A device that distributes, controls, and sometimes conditions air into a zone or space. Often is a variable air
Automatic air release valves allow the release of air bubbles from pressurised pipes. Combination air valves release bubbles from
Circumferential, ring-shaped indentations in pipe.
Pressure of the outdoor environment. Approximately 14.7 psi | 101.4 kPa | 1 bar at sea level and varies
*An organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment,
American Water Works Association
Reverse flow in a water system from the normal or intended direction. This includes flow around pumps and mechanical
A device designed to prevent reverse flow in a water system. Can be used as another term for a
