... *convenient moving *high quality PYS-12000A type water drive smoke ventilator is my company independent research and ... smoke ventilator, using the large flow of fire water as a source of power, drives the impeller ... air duct,6, blade7, mist adjusting knob 8, water outlet quick joint , 9water inlet joint 10, the rubber ... 9.5~14exhaust smoke level m³/h1200012000/17000Supply water pressure MPa0.5~1.20.5~1. ...