Designed for Wildland/Attack fire suppression, the rugged and powerful WATEROUS PB18-G2015 is a gear-driven centrifugal pump powered by a V-twin Briggs and Stratton(r) 18 hp engine that delivers from 20 GPM @ 320 psi (80 L/min @ 22 bar) to 75 GPM @ 190 psi (290 L/min @ 13 bar).Specifications 570cc Briggs & Stratton Vanguard V-twin engine, air-cooled, four-cycle, overhead valve, gasoline fueled engine producing 18 HP (13.4 kW) @ 3600 RPM. High-strength aluminum two-gear case with helical cut hardened steel gears and anti-friction, deep-grove ball bearings throughout. High-strength aluminum alloy pump body, anodized for superior corrosion resistance. 2-inch female NPT intake ball valve with 1.5 inch female NPT discharge (no ball valve on G2015F). High-strength, double-hubbed, corrosion resistant bronze impeller mechanically balanced to eliminate vibration. Operator's panel includes discharge pressure and compound intake gauges, low oil pressure warning light, start and stop control, speed control panel light and 12 volt outlet (panel with compound gauge including expanded vacuum scale optional). Bronze wear rings add life to the pump and are easy to replace. Spring-loaded mechanical shaft seal never needs adjustment. Stainless steel shaft sleeve. Combination spark arresting muffler and exhaust primer, which is fast and easy to use. Integral 3 gallon (11 liter) wrap-around base fuel tank (additional 3 gallon remote tank optional). Full-pressure lubrication, with automobile-style oil filter. Standard 12-volt electric and manual recoil starter. - Standard rigid steel channel rail base (control panel shipped loose)