The Master Stream 4000 ER series is a super-high volume nozzle capable of flowing up to 4000 gpm (15000 l/min). The automatic version flows 600-4000 gpm (2300-15000 l/min) and incorporates field adjustable nozzle pressure regulation capable of constant nozzle pressures from 80-120 psi (5.5-8.3 bar). The selectable version has flow settings of 2000, 3000, and 4000 gpm (7500, 11000, and 15000 l/min) at 100 psi (7 bar). Continously variable pattern from straight stream to wide fog. Fog and straight stream adjustments are smooth and controlled from the TFT monitor controller. Hardcoat anodized aluminum for maximum resistance to corrosion and wear. Quick connect coupling for Tsunami monitor and 6" (152 mm) ANSI flange inlet options available.