An ostomy system and adaptor which allows human waste to flow from one ostomy bag to another ostomy bag via a one directional flow valve which has the ability to automatically open when the stoma waste pressure from the first, or primary, bag reaches a waste pressure near, but under, the pressure that would cause the primary bag to leak onto the person wearing it. Present ostomy bags can leak onto the person wearing it if the bag stoma waste pressure increases by over filling, or by being physically bumped or squeezed (such as when a person is sleeping on it). This new invention prevents an ostomy bag from breaking the ostomy seal (which seals the ostomy body flange to the persons skin) and leaking human waste material onto the person wearing it. Leaking can cause great embarrassment and pain since human waste will burn the skin where the ostomy flange is glued to the user. Leaking can also greatly stain the bed, sheets and blankets where a person is sleeping.
