The special problems in this thesis aims to design and build a spray type water by chemical engine. Characteristics of the machine structure is made of angle steel 1 "* 2.5 mm 46 × 80 × 110 cm (width × length × high) and use the engine's horsepower, etc. 1.2 size, speed, 7000 rpm. Transmission with the crank shaft to spin insulator made you Biao spin and ส่งกำลัง to piston pump system brass, two smoke horizontally. The real work sprayer type water engine of the prototype.Area size, 6603 square meters, found that the prototype has the ability to work is 1.77 Rai / hour.