Air Chamber 2 : A pump chamber filled with air that cushions and smooths out pulsations caused by the operation of pistons or gears displacing water in a positive displacement pump. See also: Airdome, Air Lock
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}