Butterfly Valve – All the different types and what they are made of

Butterfly ValveButterfly valve is a valve that is usually used for regulating flow or isolating.

When it comes to the operation, it is very similar to that of a ball valve. That means it allows for a quick shut off. Generally, users favor butterfly valves because they are lower in cost compared to the other valve designs. In addition, they are lighter in weight which means that it does require a lot of support.

The disc of the butterfly valve is in the center of the pipe. A rod passes through the disc which is connected to an actuator on the outside of the valve. When the actuator is rotating it turns the disc perpendicular or parallel to the flow. In the case of a butterfly valve the disc is always present within the flow.

Butterfly Valve – All the different types and what they are made of

Butterfly ValveSo, where does a butterfly valve come from? Well, it comes from a family of valves that are known as quarter-turn valves. You can keep these valves fully open or fully close. This valve however has a metal disc.When you close the valve, you also turn the disc to block off the passageway. On the other hand, if you open the valve, you rotate the disc a quarter turn. This way it allows an unrestricted passage.

The butterfly valve comes from a certain family and it has a family of its own. Therefor, there are many different kinds of butterfly valves. The most “famous” one is the zero-offset butterfly valve. This valve has the lower pressure rating and uses its flexibility of rubber.

The next one is the high-performance double offset butterfly valve. You can use this one in slightly higher-pressure systems. Nevertheless, the one that is best suited for high-pressure systems is the triple offset. What are butterfly valves made of? Check out he video and find out!