... , efficient;Low pressure and low speed wortex air transport;Well compact and seal, small dust, ... chemical fiber concrete spraying.2. cp-7 air motor concrete spraying machine SPECIFICATIONS:Output Capacity: ... 15 mmInner Diameter of Conveying Hose:> 50 mmWorking Compressed Air Pressure:29 ~ 58 psi (0.2 ~ 0 ... power drive system, a rotor assembly, a compressed air system, and a spraying system. The CP- ...