ARP Series pumps from Woma Corporation cover a range up to 1,000 hp, delivering volumes up to 432 gpm and pressure ranges up to 5,800 psi. They have a compact design and incorporate an internal gear-reduction system with three different gear ratios to maximize speed and power input for optimal pressure and flow output. They can be used in dirty water, have suction and discharge connections on either side, are available with either left- or right-side drive shaft, drive shaft placed on top or bottom, and pressurized gear-end lubrication systems via external crankshaft-driven oil pump. Plungers are high-grade ceramic and valves are large-bore and low-velocity, with wear-resistant valve seats. Packing seals are long life and the pump design incorporates an internal plunger and gear-end cooling system. 800/258-5530; www.womacorp.com.