Multistage ejector with silencer with aluminum front plate max. vacuum (-kPa): 92 max. suction capacity (Nl/m): 389 compressed air consumption (Nl/m): 78 ~ 108 noise level (dBA): 50 ~ 65 working temperature: -20 °C ~ 80 °C Air connection: A 1/4_ Vacuum connection: V 3/4_