A shut-off valve assembly (28) of an implantable penile prosthesis (20), the shut-off valve assembly (28) comprising: a body (132) adapted to be attachable between a reservoir (24) and a pump (26) of the implantable penile prosthesis (20)； and a shut-off valve (110) adapted to be placed in an inlet flow path (76) between the reservoir (24) and the pump (26) and which includes: a core (120) retained in a coupling capable of rotation within a seat (130) formed within the body (132), an inlet flange (122) connected to and extending radially away from the core (120), and a closing flange (124) connected to and extending radially away from the core (120), an inflation channel (140, 340) formed through a part of the core (120), a deflation path (142) separated from the inflation channel (140, 340) and formed through a diameter of the core (120), and a one-way check valve (144) disposed in the deflation path (142) of the core (120), wherein the shut-off valve (110) is configured so that the contact between a side of the pump side (134) of the closing flange (124) and a wall (138) of the body (132) prevent the Pressurized liquid flows from the reservoir (24) to the pump (26), and so that the low pressure downstream of the shut-off valve (110) created by the suction of the pump (26) drag the inlet flange (122) ) counterclockwise as the core (120) rotates relative to the seat (130), and where the rotation of the core (120) and the inlet flange (122) operate to open a gate that allows that the liquid flows from the tank (24) to the pump (26).Un conjunto válvula de cierre (28) de una prótesis de pene implantable (20), el conjunto válvula de cierre (28) que comprende: un cuerpo (132) adaptado para ser acoplable entre un depósito (24) y una bomba (26) de la prótesis de pene implantable (20)； y una válvula de cierre (110) adaptada para ser colocada en una trayectoria de circulación de entrada (76) entre el depósito (24) y la bomba (26) y que incluye: un núcleo (120) retenido en un
