Steam jet ejector system having no moving parts operates on the principle of converting the pressure energy of a motivating fluid to velocity energy to realize the goal of entrain the suction fluid. Vacuum is created, Airflow or gaseous elements is entrained and mixture or gas and steam enters the venturi diffuser where its velocity energy is converted sufficient to, Into pressure discharge against a predetermined back pressure. Designs upto 0. 05 torr. Material of construction as per process requirement