Low temperature butterfly valve

Low temperature butterfly valve refers to a butterfly valve whose valve body, butterfly plate, valve seat, valve stem and other overcurrent components have undergone special low-temperature treatment. Low temperature treatment requires the butterfly valve material to be immersed in liquid nitrogen at a temperature of -196 degrees Celsius for nitriding treatment. After soaking for a certain period of time, the material's metallographic structure is thoroughly adapted to a low-temperature environment of -196 degrees Celsius. Low temperature butterfly valve is a type of switch valve and regulating valve with a simple structure, mainly used for on/off control of low-pressure and low-temperature pipeline media. The closing element of the low-temperature butterfly valve is a disc-shaped butterfly plate that rotates around the valve shaft to achieve opening and closing. The valve stem of the low-temperature butterfly valve produced by Shanghai Meiyanyi Pump Valve will be lengthened to some extent. It can be used to control the flow of various low-temperature media such as liquefied gas, natural gas, liquid nitrogen, etc., and mainly plays a role in cutting off and throttling on pipelines.