WILLIAMS FIRE & HAZARD CONTROL DEPENDAPOWER Transportable Pumps incorporate a diesel-driven horizontal split case centrifugal pump and utilize a premium CATERPILLAR diesel driver and water pump. The versatile 4000 Model delivers exceptional performance with a 10 ft (3.05 m) lift of 4,000 gpm (15,140 Lpm) rating at 190 psi (13.1 bar) net outlet pressure at sea level.