Weathermatic B Series Brass Nozzles Weathermatic B Series Brass Nozzles are made of milled brass, providing the best available uniform precipitation for water, material and labor savings in a professional design. Arcs and angles for any landscape requirement are available. Featuring reinforced border spraying combined with an extremely flat slope of distribution which eliminates the requirement for "head-to-head" coverage. B Series nozzles are compatible with most micro-irrigations application rates.