The WATERAX MARK-3® is the core of superior water handling systems upon which specifications and standards are built. Pairing a high performance 4-stage pump end and a 185cc 10 hp 2-stroke engine, this impressive workhorse can achieve pressures of up to 380 PSI (26.2 BAR) and flow rates reaching 98 US GPM (371 L/Min). It is designed to withstand the rigors and extreme conditions of wildland firefighting and is the most trusted and time-tested pump in the industry.