American standard flange ferrule plug valve is suitable for cutting off or connecting pipeline media in various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, electric power industry and other working conditions with nominal pressure CLASS150-CLASS1500 and working temperature of -29-180 °C. The two-way plug valve is equipped with an oil groove between the valve body and the sealing surface, which can inject sealing grease into the valve seat at any time through the oil nozzle to increase the sealing performance. The material and flange size of the parts can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.