PROBLEM TO BE SOLVED: To provide an air/water supply valve for endoscopes capable of forward/backward moving, while retaining a shielding state between a cylinder and itself, and an endoscope.SOLUTION: The air/water supply valve for endoscopes controlling air supply and water supply by changing connecting states of a plurality of air/water supply pipes formed in an endoscope, includes: a shaft part extending in a rod-like manner； a cap attached to one end of the shaft part； and a mounting member being inserted into the shaft part and attachable to the endoscope. The shaft part includes: a body portion extending along the longitudinal direction of the shaft part； and a check valve that controls a flow of fluid in a space extending along the longitudinal direction from between the shaft part and the mounting member, the elastically-deformable check valve that is formed by circling the outer surface of the body part, where a diameter of the outer periphery from a side of the shaft part continuing to the cap toward an opposite side of the side continuing to the cap is large.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】シリンダとの間の遮蔽状態を維持しつつ進退動作させることができる内視鏡用送気送水弁及び内視鏡を提供すること。【解決手段】内視鏡に形成された送気送水用の複数の管路の接続態様を切り替えて送気及び送水を制御する内視鏡用送気送水弁において、棒状をなして延びる軸部と、軸部の一端に取り付けられているキャップと、軸部に挿通されてなり、内視鏡に取り付け可能な取付部材と、を備え、軸部は、当該軸部の長手方向に沿って延びる本体部と、当該軸部と取付部材との間から長手方向に沿って延びる空間の流体の流通を制御する逆止弁であって、本体部の外表面を周回してなり、軸部の前記キャップに連なる側からキャップに連なる側と反対側に向けて外周のなす径が大きい弾性変形可能な逆止弁と、を有する。【選択図】図５
