Apparatus for interchanging orifice plates for orifice flowmeter

摘要

A closed orifice plate stowage disposed outside an orifice plate mount portion at an inter­mediate portion of a pipe channel has a communication opening on one side of the mount portion for passing an orifice plate therethrough and is in communication with the mount portion through the opening. A movable body housed in the plate stowage and movable in a direction parallel with the pipe channel has a plurality of orifice bins arranged in parallel with the pipe channel at a spacing. A device is provided for moving orifice plates one by one between the mount portion and the plate bins of the movable body through the opening.