4901 Kesslersville Road Easton, PA 18040
**A compartment or chamber to which one or more air ducts are connected and that forms part of the
Containing or operated by air or gas under pressure.
*A sprinkler system employing automatic sprinklers that are attached to a piping system that contains air that might or
Drawings used to provide general arrangement and system layout for information purposes only. They are not typically accurate or
The force exerted per unit area. Usually expressed in pounds per square inch (psi) or kilopascals (kPa).
*A pilot-operated pressure reducing valve, designed for the purpose of reducing the downstream water pressure to a specific value
Pressure differential, often used to indicate flow velocity across a valve or orifice.
*A valve designed for the purpose of reducing the downstream water pressure under both flowing (residual) and non-flowing (static)
*A device designed for the purpose of reducing, regulating, controlling, or restricting water pressure.
