Rockwin flowmeter provides offers the contoil range of pd meters. These flowmeters operate onmeters work on ring piston principle. These flowmeters and are suitable for lshs, ldo, hsd, petrol, atf, lubricating oils, etc. The miniature series is available in 4 mm and 8 mm sizes with flow capacities of 1 to 135 lph. The standard series consists of 15 to 50 mm models with flow capacities from 10 to 30,000 lph. All models have aa mechanical register is provided with all the models. Optional pulse transmitters are used for interfacing with secondary instrumentation for remote indication of total flow, flow rate, batching, flow alarms, etc, are also available.