Flowmeter to indicate fluid flow state. And can adjust the flow of electronic monitoring and on-site. This series of flow meters for both light oil lubricants, materials are aluminum, which KUI-A buoy with tube design, thread is G1 / 2, the number one port, each of the oil export flows of 0.05 - 25 l / min. KUI-B with tube float design, thread is G1 / 2 to G3 / 4, the port number from 1 to 5, each outlet port flow 0.05 - 25 l / min. KUI-F buoy design with built-in, thread is G3 / 8 to G3 / 4, the port number from 1 to 16, each outlet port flow 0.05 - 7 l / min. KUI-M with floats designed screw for the G1, the port number is 1, each flow of the oil port 20 - 50 l / min.