An endoscope cleaning/disinfecting apparatus connector according to the present invention includes a cleaning/disinfecting apparatus connection section, a circulating section 2 and a discharge section 4, wherein the discharge section 4 communicates with the circulating section 2 and includes a first channel A1, A2 that discharges a fluid R that passes through the circulating section 2 into a pipe sleeve 11, a second channel B that branches from the first channel A1, A2 and discharges the fluid R to the periphery of the pipe sleeve 11, and an opening/closing section 6 that is provided in a branch section 8 that branches from the first channel A1, A2 to the second channel B or in the second channel B, is freely expandable/contractible according to a flow rate of a fluid R and blocks the second channel B when the flow rate of the fluid R is a predetermined amount or higher.洗浄消毒装置接続部と、流通部2と、吐出部4とを有し、吐出部4は、流通部2と連通しており、流通部2を通過した流体Rを口金11内に吐出する第1流路A1,A2と、第1流路A1,A2から分岐し、流体Rを口金11周りに吐出する第2流路Bと、第1流路A1,A2から第2流路Bへと分岐する分岐部8、または第2流路Bに設けられた、流体Rの流量に応じて膨張収縮自在な、流体Rの流量が設定量以上の場合に膨張して、第2流路Bを塞ぐ開閉部6とを具備している。【選択図】図2
