The MFC1 series purging device is composed of a small flow metal tube float flowmeter and a constant flow control valve produced by our company. The main function is to keep the flow constant when the system pressure or load changes. This product can display and adjust the constant flow value. Small and large functions are widely used in process control such as purging of transmitters in petroleum refining, chemical, ethylene, fertilizer, steel, chemical fiber and textile industries, and liquid level measurement by differential pressure.