The Council of Scientific and Industrial Research was commissioned in 1994 to conduct test on
the Vent-O-Mat "Anti-Shock" air valves as well as a range of various other air valve designs. The
purpose of the tests were threefold namely:
1. Air Valve discharge performance.
2. The magnitude of pressure transient pressures created by conventional kinetic
air valves.
3. The magnitude to which Vent-O-Mat limits the transient pressures on closure.
