6.4.4 Clamps shall be installed to fit directly on the hose and shall not overlap each other.
Clamps shall be installed behind the bead, if any, or fully on the serrations at least one clamp width from the end of the hose.
6.5 Valves
6.5.1 Manually operated valves shall be designed with positive stops in the opened and closed positions or shall clearly indicate their opened and closed positions.
6.5.2 The integrity and tightness of a valve shall not depend solely on spring tension.
6.5.3 Threaded valve housing covers that can be exposed to an opening torque when the valve is operated shall be secured against unintentional opening by a device that can be reused.
6.6 Fuel filters
6.6.1 Petrol fuel systems shall be equipped with a fuel filter which may be fitted on the engine.
6.6.2 Diesel fuel systems shall be equipped with at least one fuel filter and one water separator. The two functions may be combined in one unit.
6.6.3 Each filter shall be independently supported on the engine or hull structure.
6.6.4 Filters and water separators fire tested in accordance with Annex B shall be labelled or marked "ISO 10088".
