PROBLEM TO BE SOLVED: To provide a connector enabling a user to inject a prescribed amount of liquid, excellent in sanitation aspect, and capable of being miniaturized, and to provide a valving element used for the connector.SOLUTION: A valving element for connector 5, made of rubber and stored inside an end connection 11 of a connector tube 4 having at least two end connections 11-13, and an internal flow passage 14, includes: a first seal portion 21 having a surface communication slit 31, a second seal portion 22 having a through hole 32, and a third seal portion 23 having a flow channel communication slit 33 adjacently in an axial direction. The valving element for connector 5 has a valving element penetration passage 4c in which the surface communication slit 31, the through hole 32 and the flow channel communication slit 33 are communicated with each other. A connector 1 includes the valving element for connector 5, and the connector tube 4 having at least two end connections 11-13, and the internal flow passage 14.COPYRIGHT: (C)2014,JPO&INPIT【課題】所定量の流体を注入でき、衛生面にも優れ、小型にし得るコネクタ、及び、このコネクタに用いられるコネクタ用弁体を提供すること。【解決手段】少なくとも2つの接続口11~13及び内部流路14を有するコネクタ管4の接続口11内部に収納されるゴム製のコネクタ用弁体5であって、表面連通スリット31を有する第1シール部21と貫通孔32有する第2シール部22と流路連通スリット33を有する第3シール部23とを軸線方向に隣接して備え、表面開口スリット31、貫通孔32及び流路連通スリット33が連通してなる弁体貫通路4cを有しているコネクタ用弁体5、並びに、このコネクタ用弁体5と、少なくとも2つの接続口11~13及び内部流路14を有するコネクタ管4とを備えているコネクタ1。【選択図】 図1