Roman Fountains RMN-150-35 RMN Series 1.5" NPT 35° Deflector Mushroom Fountain Nozzle, Brass/Bronze. The RMN Mushroom Nozzle Series produces a clear, circular sheet of water. The adjustable deflector cone permits a full range of patterns from full unbroken sheets to half broken sheets. This nozzle is machined brass and copper construction. The RMN has a fully adjustable 35° deflector cone with a stainless steel lock nut and 1-1/2 (F) N.P.T. connection. A higher cone adjustment produces a fuller sheet of water with a smaller diameter.