the advantages and disadvantages of butterfly valves

    A butterfly valve is a type of valve that uses a circular disc-shaped shutoff element that rotates approximately 90° to open, close, or regulate the fluid passage. 

    The valve's shutoff element, known as the butterfly plate, rotates around its own axis inside the valve body, achieving the open/close or regulation function. Typically, the rotation from fully open to fully closed is less than 90°. The butterfly valve and the valve shaft itself do not have self-locking capabilities. 

    To position the butterfly plate, a worm gear reducer is added to the valve shaft. The use of a worm gear not only allows the butterfly plate to self-lock but also improves the valve's operational performance by enabling it to stop at any desired position.

    Industrial butterfly valves are designed to withstand high temperatures and can handle higher pressure ranges. They typically have a large nominal diameter, with the valve body made of carbon steel. The sealing ring of the butterfly plate is made of a metal ring instead of rubber. Large, high-temperature butterfly valves are often welded from steel plates and are mainly used in high-temperature media such as flue gas ducts and gas pipelines.

    However, butterfly valves also have some drawbacks. Compared to other types of valves, their temperature and pressure resistance range is relatively smaller, and their sealing performance is not as good. But with continuous technological advancements and innovations, these shortcomings of butterfly valves are gradually being mitigated, and butterfly valves are increasingly being applied across various sectors of the national economy.

    If you have any ideas about the butterfly valves, please contract me freely in anytime~

Victor Feng | Sales Engineer

victor@gntvalve.com