How Butterfly Valve Works

Butterfly valves are one kind of valve that are used to start, shut off, and control fluid flow. Widely used in various industries, including HVAC, power plant, water treatment, oil and gas, paper and pulp, etc. Due to the wide size of the butterfly valve, it is very suitable for use in large pipelines.

Source: saVRee

According to the design type, the butterfly valve can be divided into single eccentric butterfly valve, double eccentric butterfly valve and triple eccentric butterfly valve, suitable for application that has pressure needs.

At the same time, butterfly valves can also be made into wafer type, lug type, flange type and clamp type, suitable for different valve needs.
More importantly, the butterfly valve can be made into a soft seal type or a hard seal type, which is suitable for controlling different types of media.

Both butterfly valves and ball valves are industrial valves with a 90-degree turn. The butterfly valve is rotated by the handle or hand wheel, so that the valve stem drives the valve plate to rotate 90 degrees to open or close the valve.

Butterfly valve body: The valve body is used to cover and protect the internal parts of the butterfly valve. The valve body can be made of stainless steel, WCB, Cast iron or plastic to meet the requirements of different industries. At the same time, the outer edge of the valve body will have a linking method for linking with the pipeline for use in the project.

Valve plate: When the valve is closed, the valve plate will be perpendicular to the medium. When the valve is open, the valve plate is parallel to the medium. At the same time, the valve plate can be partially opened or closed, allowing a certain amount of medium to pass through, thereby playing a regulatory role.

Handle or actuator: The ISO5211 standard connection plate of the butterfly valve means that it can be driven by a handle or remotely controlled by an actuator.

We can provide pneumatic actuators and electric actuators for your choice. If you use an electric actuator, you can easily achieve the purpose of the remote control. If you use a pneumatic actuator, you can reduce the cost, and this operation is the fastest actuation way. Any demand for butterfly valves, feel free to consult us at