The type TW19 quick connector is especially designed for sealing hydraulic components with female threads in high and low pressure applications. The lever actuated connector safely grips into the test piece, even in case of high lateral forces, e.g. heavy or rigid hoses. The higher the test pressure the tighter the WEH^® Connector will clamp itself into the thread of the test piece. The front o-ring reliably seals the connection and no additional clamping devices are required. Having only one seal in the interior of the connector, ease of maintenance is provided.