Dwyer's Series MM flowmeters are ideal for a wide range of OEM and user applications in medical equipment, air samplers, gas analyzers, pollution monitors, chemical injectors, cabinetpurging, etc.The standard Model MMA flowmeter is suitable for both gas and liquid applications. It can be configured by the user with the parts provided to have non-removable top or bottom front mounted metering valves or no valve at all. The transparent nylon material provides high chemical resistance, low moisture absorption and is transparent to facilitate routine inspection.