a device to close a pipe by rotating a sphere in which there is a hole having a diameter equal to that of the pipe, e.g. used at the entrance to a turbine casing
The ball valve shall have an inside diameter not less than the inside diameter of the particulate transfer tube PTT, and a switching time of less than 0,5 seconds.
Online Language Learning Tool SkELL allows users to search for phrases in sentences, collocates and similar words. These examples have been automatically selected and may contain errors.
