14 gate valve is a special valve that uses bellows as a sealing element. The special elastic structure of the bellows enables it to have good sealing performance under high pressure, and at the same time absorb vibration and prevent leakage. The valve has simple structure, high reliability, flexible and convenient operation, and easy maintenance. It is widely used in flow control, cut-off and regulation in liquid and gas pipelines. The bellows gate valve has the advantages of corrosion resistance, wear resistance, high temperature resistance, and strong pressure resistance. It is an ideal valve with good sealing performance.