A valve assembly, comprising: a valve body defining a first enclosure having a first port and a second port, and a second enclosure having a third port; a movable valve member positioned in the first enclosure between the first port and the second port and configured to control fluid flow from the first port to the second port; an internal seal disposed in the valve body _between the first enclosure and the second enclosure that prevents fluid flowing through the first port or the second port from reaching the third port; an internal mechanism with a first end and a second end, the first end disposed in the first enclosure and operatively coupled to the movable valve member , the second end traversing the internal seal and positioned in the second enclosure ; a removable plug operable to seal the third port off from an outside environment of the valve assembly when the removable plug is seated in the third port; an internal actuation member having a ferromagnetic portion comprising an impermanent or permanent magnet, the internal actuation member operatively coupled to at least a portion of the internal mechanism; and an external actuator operatively coupled to an exterior of the valve body , the external actuator comprising: a first magnetic pole section adjacent to the valve body ; and a second magnetic pole section adjacent to the valve body ; and wherein movement of the external actuator is effective to exert a first force on the internal mechanism, and wherein the internal mechanism is effective to transmit a second force to the movable valve member ; characterized in that the internal actuation member is disposed in the first enclosure . a valve body defining a first enclosure having a first port and a second port, and a second enclosure having a third port; a movable valve member positioned in the first enclosure between the first port and the second port and configured to control fluid flow from the first port to the second port; an internal seal disposed in the valve body _between the first enclosure and the second enclosure that prevents fluid flowing through the first port or the second port from reaching the third port; an internal mechanism with a first end and a second end, the first end disposed in the first enclosure and operatively coupled to the movable valve member , the second end traversing the internal seal and positioned in the second enclosure ; a removable plug operable to seal the third port off from an outside environment of the valve assembly when the removable plug is seated in the third port; an internal actuation member having a ferromagnetic portion comprising an impermanent or permanent magnet, the internal actuation member operatively coupled to at least a portion of the internal mechanism; and an external actuator operatively coupled to an exterior of the valve body , the external actuator comprising: a first magnetic pole section adjacent to the valve body ; and a second magnetic pole section adjacent to the valve body ; and a first magnetic pole section adjacent to the valve body ; and a second magnetic pole section adjacent to the valve body ; and wherein movement of the external actuator is effective to exert a first force on the internal mechanism, and wherein the internal mechanism is effective to transmit a second force to the movable valve member ; characterized in that the internal actuation member is disposed in the first enclosure . <EOS>