CONNECTION STRUCTURE FOR COMMUNICATION PORT AND PIPE END, OPENING/CLOSING VALVE DEVICE, AND REMOVAL JIG

摘要

[Problem] The purpose of the present invention is to provide a connection structure for a communication port and a pipe end, an opening/closing valve device, and a removal jig, wherein a sealing member that can be disposed at an appropriate position while the communication port and the pipe end are connected can be easily replaced. [Solution] This connection structure X in a container valve device 1 having an opening/closing valve for switching between opening and closing in an intermediate portion of a flow passage 14 through which gas flows is a connection structure for a communication port 12, which constitutes one end of the flow passage 14, and a pipe end section 102 of a flow passage pipe 100 through which gas flows. The communication port 12 and the pipe end section 102 are arranged to abut each other. A ring-like gasket 20 having an opening 21 with a diameter equal to or greater than the diameter of the flow passage 14 is arranged between the communication port 12 and the pipe end section 102. An attachment groove 122 for attaching the gasket 20 so that a portion of the gasket protrudes toward the tip side F is formed in the communication port 12. A tapered space 123, into which a lateral protrusion section 203a of a removal jig 200 can be inserted, is provided on the body side B of the communication port 12.