Turbine extended stem butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. Butterfly valve that can be used for on-off control of low-pressure pipeline medium means that the closing member (valve or butterfly plate) is a disc, which rotates around the valve shaft to achieve A valve that opens and closes.
Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment.
Working principle of turbo extended stem butterfly valve：
Turbine extension rod butterfly valve is a kind of valve that uses a disc type opening and closing member to reciprocate about 90° to open, close or adjust the flow of the medium. Butterfly valve not only has simple structure, small size, light weight, low material consumption, small installation size, small driving torque, simple and fast operation, but also has good flow regulation function and closing sealing characteristics at the same time, and the butterfly valve is widely used. The variety and quantity of its use are still expanding, and it is developing towards high temperature, high pressure, large diameter, high sealing performance, long life, excellent adjustment characteristics, and multi-function of one valve. Its reliability and other performance indicators have reached a high level.
In order to meet the requirements of industrial applications such as high and low temperature, strong erosion, and long life, metal-sealed butterfly valves have been greatly developed. With the application of high temperature resistance, low temperature resistance, strong corrosion resistance, strong erosion resistance, and high-strength alloy materials in butterfly valves, metal-sealed butterfly valves have been widely used in high and low temperature, strong erosion, long life and other industrial fields. Butterfly valves with large diameter (9~750mm), high pressure (42.0MPa), and wide temperature range (-196~606℃) have appeared, so that butterfly valve technology has reached a new level.