Full Cone - FullJet® Nozzle - Square Spray - 3/8HH-18SQ @ 40 psi (3 bar); Spraying Systems Co. FullJet® nozzles produce a solid cone-shaped spray pattern consisting of medium to large sized drops with a round impact area. The spray pattern is uniform, providing even and thorough center-to-edge coverage. A unique vane design with large flow passages is responsible for the uniform coverage.; Use FullJet® nozzles in a wide variety of applications -- washing, rinsing, cooling, dust suppression and fire protection. The nozzles are available in a wide variety of configurations, capacities, connections, materials, spray angles and sizes. Many models are available with a choice of impact areas of wide angle, square and oval.