Flow regulators for commercial use, to provide safety, containing one or more indicator objects made of metal or plastic, which that rattles and makes noise when liquid flows through the regulators, thereby alerting a user when liquid is flowing and also when liquid has stop flowing, since no rattling or sound is heard; Flow meters; Gasoline gauges; Safety valves for flow shutoff in well construction; Automatic valves containing an indicator for providing a safety notification that liquid is flowing; Control valves for regulating the flow of gases and liquids; Fitted noise reduction holed plates for control valves used in regulating the flow of gases and liquids; Gas flow monitors; Measuring hoses for measuring temperature, pressure, quantity and concentration of fluids in hydraulic or pneumatic systems; Metered gasoline pumps; Metering orifices, namely, orifice plates for metering or controlling the flow rate of liquids; Valves for controlling and regulating the flow of gases or liquids not being parts of plumbing, heating, cooling installations or machines