Irrigation Technicians

The trajectory and spray height of the water stream leaving a sprinkler nozzle is important information when designing and installing irrigation systems.  These spray nozzle trajectory charts are designed to help determine how close a sprinkler can be placed to an object such as a fence or hedge without obstructing the spray pattern. All information shown is at optimum operating pressures.

A = Degrees of trajectory

B = Max Height of Spray

C = Distance from head to Maximum Height


If water is leaking from the vacuum breaker portion, then there could be debris in the anti-siphon poppet.  This would prevent the valve from sealing completely.  The cap can easily be removed by twisting counterclockwise to inspect the internal poppet area.