What Is A Lug Butterfly Valve?

The lug butterfly valve is a kind of compact and widely used industrial valve which is widely used in fluid control system. Here's a closer look:
1.Structural design
The core components of lug butterfly valve include valve body, butterfly plate, valve stem and sealing ring. It gets its name from the "lug" structural design that protrudes from both sides of the valve body. These lugs have bolt holes that connect directly to the pipe flange, eliminating the independent flange components of traditional flange valves, thus simplifying the installation process and reducing system costs. The lugs are usually designed in two forms, a through-hole (commonly known as Type A in China) and a threaded through hole (known as Type LT in China) for different installation scenarios. Some lug butterfly valves are designed with double eccentricity, so that the valve has less friction and torque when opening and closing, which improves the response speed and service life.
2.Performance characteristics
Good sealing: Lug butterfly valves usually use sealing gaskets to ensure sealing. Some models also have a three-layer seal structure (two-layer seal and one-layer metal sealing), which maintains good sealing performance in high temperature, high pressure and corrosive media.
Fast opening and closing: lug butterfly valve opening and closing fast, can quickly realize the switch control of media, improve the efficiency of pipeline system.
corrosion resistance: valve body and valve plate are made of stainless steel (SS304, SS316, SS304L, SS316L, etc.), which makes cam-shaped butterfly valves good corrosion resistance and can be used in various media environments.
Simple operation: lug butterfly valve is simple to operate and easy to control. Some models are also equipped with reliable operating handles and electrical equipment to ensure precise control and ease of remote operation.
Good flow characteristics: The flow characteristics of lug butterfly valve change linearly, so that it has better accuracy and stability when adjusting the flow rate of medium.
3. Application areas
Lug-type butterfly valves is widely used in petroleum, chemical industry, smelting, papermaking, environmental protection, water treatment, HVAC, fire protection, food, medicine and other industries of liquid or gas pipelines. In these fields, lug butterfly valve plays an important role in connecting, cutting off and regulating media pressure and flow rate. For example, in municipal water supply networks, lug butterfly valves can be used for flow regulation and isolation control, and in chemical production, lug butterfly valves can be used to control the flow of various corrosive media.