DRAIN PLUG FOR FLUID CIRCUIT

摘要

PURPOSE: To provide a drain plug that simultaneously performs drain works in a plurality of branch circuits using a single work. CONSTITUTION: This plug 40 for controlling the communication between first and second branch circuits I and II is engaged into stepped holes 24-26 of the body 22 of a drain plug 20, and a piston 56 for controlling the communication between the first and the second branch circuits I and II, and third branch circuit III is slidably arranged into stepped holes 50-52 of the plug 40.