METHOD OF STARTING PUMP AND ITS DEVICE
Document Type and Number:
Japanese Patent JP54017501
PURPOSE: To reduce facility investment, by mounting a back flow preventive valve to an end portion of a discharge pipe shaping a siphon when startign a pump, and by installing aconstraining device, which closes the back flow preventive valve when starting, detects the filling of water and opens the back flow preventive valve.
February 08, 1979
July 11, 1977
F04D15/00; F04B49/00; F04B49/02; F04D15/00; F04B49/00; F04B49/02; (IPC1-7): F04B49/02