Jain 16024640 Blue 233AF #18 Nozzle 3/4" Male Sprinkler Anti-Frost. Sprinklers provide efficient coverage for small to large areas and are suitable for use on all types of farmlands. It is also adaptable to nearly all types of irrigable soils as sprinklers are available in a wide range of discharge capacities. This #18 nozzle is for 233AF sprinklers.