Devices or appurtenances for use in, or in connection with, pipes or pipe systems (F16L1/00 - F16L53/00, F16L57/00, F16L59/00 take precedence; repairing or joining pipes on or under water F16L1/26; cleaning of pipes B08B9/02, e.g. removal of blockages B08B9/027; devices for preventing bursting of water pipes by freezing E03B7/10)

Child Classifications

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• F16L 55/005
• F16L 55/02 Energy absorbers; Noise absorbers
• F16L 55/04 Devices damping pulsations or vibrations in fluids
• F16L 55/07 Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining (apparatus for draining F16T)
• F16L 55/09 Air-conditioning, e.g. de-watering, in pneumatic systems
• F16L 55/10 Means for stopping flow in pipes or hoses (F16L29/00, F16L37/28 take precedence; valves F16K)
• F16L 55/16 Devices for covering leaks in pipes or hoses, e.g. hose-menders
• F16L 55/18 Appliances for use in repairing pipes (F16L55/10 takes precedence)
• F16L 55/24 Preventing accumulation of dirt or other matter in pipes, e.g. by traps, by strainers
• F16L 55/26 Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means