Ag Catalog 2003

TECH SPECSRain Flow NozzlesLooking for constantperformance atchanging pressures?Try Rain Bird's Rain Flow Nozzles(RFN). For decades, growers havelearned to rely on Rain Bird products.The RFN is no exception. Rain FlowNozzles allow growers to maintainoptimum water applicationuniformity even when the irrigationsystem has excessive elevationchanges, fluctuating systempressures, or long, high-pressurelateral or wheel-line runs. RFN'sexceptional design coupled withRain Bird reliability make Rain FlowNozzles the right choice for growerswho rely on performance and quality.Features & Benefits• Uniform flow control over a verywide range of operating pressures• Pump and pipeline damage isprevented by managing flowcontrol• RFNs accept standard streamstraightening vanes to increasedistance of throw• Unique design offers completesupport of flow washer duringoperation, regardless of pressure• Wide range of flows from which tochoose• Competitively priced• RFNs are covered by a TWO-YEARwarrantyOperating Specifications• Pressure: 30 to 110 psi (2 to 7.5 bar)• Optimum Pressure: 40 to 80 psi(2.75 to 5.5 bar)• Install nozzle hex flat on top toprevent interference with drivearm.Rain Flow Nozzle shown on 30H Impact SprinklerThe RFN has an elastomer washerthat controls the size of the orifice.When no pressure is present, thewasher is in a natural and relaxedstate. As system pressure increases,radial deformation occurs,contracting the elastomer washer andnarrowing the orifice. The orifice sizeis proportionally reduced accordingto the pressure applied. As a result,flow is held constant even whenpressures fluctuate.Low PressureHigh PressureStable flowrates at varyingpressuresHow to Specify/Order:ModelRFN -1 -1.75Type ofConnection1 = use with1/2” sprinklers3 = use with3/4” sprinklersGPM Size1.01.752.02.53.03.54.04.55.05.5