Butterfly valve, also known as flap valve, is a regulating valve with simple structure. At the same time, it can also be used for switching control of medium in low-pressure pipeline. Butterfly valve refers to a valve whose closing part is a disc and rotates around the valve axis to open and close. It mainly plays the role of cut-off and throttling in the pipeline.

The opening and closing part of butterfly valve is a disc-shaped butterfly plate, which rotates around its own axis in the valve body, so as to achieve the purpose of opening, closing or adjustment. Butterfly valve is applicable to pipelines conveying various corrosive and non corrosive fluid media in engineering systems such as generator, gas, natural gas, liquefied petroleum gas, urban gas, hot and cold air, chemical smelting, power generation and environmental protection, and is used to regulate and cut off the flow of media.

The butterfly valve is suitable for flow regulation. Since the pressure loss of the butterfly valve in the pipeline is relatively large, which is about three times that of the gate valve, when selecting the butterfly valve, the influence of the pressure loss on the pipeline system should be fully considered, and the firmness of the butterfly plate bearing the pipeline medium pressure when it is closed should also be considered. In addition, the working temperature limit of elastic seat material at high temperature needs to be considered.

The butterfly valve has small structural length and overall height, fast opening and closing speed, and good fluid control characteristics. The structural principle of the butterfly valve is suitable for making large-diameter valves. When the butterfly valve is required to be used for flow control, it is important to correctly select the size and type of the butterfly valve so that it can work effectively. Generally, in throttling, regulation and control and mud medium, short structure length and fast opening and closing speed (1 / 4R) are required. Low pressure cut-off valve (small differential pressure), butterfly valve is recommended.

Butterfly valve can be used in the channel with double position regulation and necking, low noise, cavitation and gasification, a small amount of leakage to the atmosphere and abrasive medium. When the butterfly valve is used under special working conditions, such as throttling regulation, strict sealing or serious wear, low temperature (cryogenic) and other working conditions, it is necessary to use the special three eccentric or double eccentric butterfly valve with specially designed metal seal and regulating device.

The midline butterfly valve is applicable to fresh water, sewage, seawater, brine, steam, natural gas, food, medicine, oil products, various acid and alkali and other pipelines that require complete sealing, zero gas test leakage, high service life and working temperature of - 10 ~ 150 ℃.

Soft seal eccentric butterfly valve is suitable for two-way opening, closing and adjustment of ventilation and dust removal pipeline. It is widely used in gas pipeline and water channel of metallurgy, light industry, electric power and petrochemical system.

Metal to metal wire sealed double eccentric butterfly valve is suitable for urban heat supply, steam supply, water supply, gas, oil, acid and alkali and other pipelines as regulating and intercepting devices.

In addition to being used as the program control valve of large pressure swing adsorption (PSA) gas separation unit, the metal to metal sealed triple eccentric butterfly valve can also be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields. It is a good substitute for gate valve and stop valve.

Enertech Machinery （Suzhou）Co.,LTD is mainly engaged in ball valves, titanium valves, special valves and other valves. It is a company specializing in the manufacture of special alloy valves and customized valves, specializing in the design, manufacture and supply of all kinds of valves. Welcome to inquire: 0512-65168207