Abstract: Implementations of a valve may include a flow tube having a seat and a channel for transporting a flow downstream from an inlet to an outlet, a magnet disposed circumferentially around the flow tube at a first location, a movable magnet disposed circumferentially around the flow tube, the movable magnet movable between the inlet of the flow tube and the first location, and a plug disposed in the channel, the plug movable between an open position and a closed position in which the plug abuts the seat. The movable magnet may be configured to move the plug between the open position and the closed position.