The RK-43 hot, high-pressure washer from Delco Cleaning Systems of Ft. Worth features an 18-hp Briggs & Stratton Vanguard engine with a 16-gallon fuel tank, and also a 16-gallon diesel tank for the hot-water burner, which automatically shuts down when the gun trigger is released. The RK-43 produces 200-degree water and delivers it a rated 5.6 gpm at 3,000 psi. The ceramic-plunger, oil-bath pump is belt driven, a feature that extends pump life and simplifies maintenance, says Delco. The unit is supplied with four nozzles and employs a detergent-injection system ahead of the pump. The RK-43 has a list price of about $4,600.