The valve body undergoes galvanizing primarily to improve its corrosion resistance and extend its service life. Below, I will explain the reasons and principles in detail. What is Valve Body Galvanizing? Galvanized valve body: galvanizing involves plating a layer of zinc (Zn) onto the valve body surface. The most common methods are: Hot-dip galvanizing: Immersing…
What is the difference between resilient seat butterfly valve and resilient seal butterfly valve? In the valve industry, two terms often confused are resilient seat butterfly valve and resilient seal butterfly valve. Of course, without further ado, the terms resilient seated butterfly valve and resilient seal butterfly valve are often used interchangeably. Both refer to…
A centerline butterfly valve, also known as a concentric butterfly valve. It is a pipeline control component. Its key feature is that the stem axis, disc center, and body center are co-located. This critical feature ensures a symmetrical structure. Simply put, it resembles the wings of a rotating butterfly. This coaxial design makes it simple…
Butterfly valves are essential in many industries. You’ll see them in pipelines, oil & gas transportation, and so on. However, what sets butterfly valves apart is their throttling. You can adjust the flow or pressure of fluid using the throttling. However, there remains a question: Are butterfly valves good for throttling? The quick answer is…
In any industrial system, controlling the flow of fluids or gases is a very critical task. To do this safely, industries rely on various types of valves. Among those, the most advanced option is the triple eccentric butterfly valve. This type of valve is known for its high performance and tight sealing. Yet many seem…
1. High-Performance Butterfly Valves High-performance butterfly valves is typically featuring a double-eccentric disc design. They utilize specialized seats to achieve tight shutoff, low torque, and durability under high-pressure, high-temperature, or corrosive conditions. Unlike resilient-seated valves that utilize elastomer seats (such as common EPDM or nitrile rubber), high-performance seats are preferably constructed from materials like fluoropolymers,…
1. What is a Manual Butterfly Valve? A manual butterfly valve is a control device that controls the flow of fluid in a pipeline by rotating a disc. The disc, commonly called a “butterfly disc,” is mounted on a shaft or stem connected to a handle or worm gear. An actuator applies force to the…
I. Definition and Characteristics A semi-lugged butterfly valve features lugs on both sides of the valve body. However, unlike a full-lugged butterfly valve, these lugs are located only along a portion of the valve body’s perimeter, rather than along the entire circumference. This design addresses sealing requirements in low- and medium-pressure environments while also improving…
What is a 4 butterfly valve? A butterfly valve is a flow control device used in piping systems to regulate, start, or stop the flow of liquids or gases. It operates by rotating a circular disc 90 degrees to open or close the flow path. A 4 butterfly valve is a butterfly valve with a…
The debate on low-pressure VS high-pressure valves has been a popular topic in industries that use valves. Their usage of these valves is everywhere, from water systems to oil and gas pipelines. The main difference is the pressure each one can handle. Low-pressure valves are made for gentle flow and lower pressure. At the same…