Concentric butterfly valves
Structural characteristics of concentric butterfly valves are that stem axis, the center of the disc and the central body are in the same position. The concentric center line butterfly valves have a simple structure, can be easy manufactured. The rubber lined concentric butterfly valve that is the most common type in this category.
The disadvantage of the concentric butterfly valve is that due to the disc and seat is always in the squeeze, their scratch stated and resistance lead to fast wear. A concentric rubber lined butterfly valve relies on an interference fit between the valve disc and liner.
Because the old types of sealing materials are restricted to be used at higher temperatures, traditionally people think concentric butterfly valves can’t be used in high temperatures.
However the concentric butterfly valves to ensure good sealing performance, the seat is basically made of high temperature material such as rubber or Teflon.
What are the structural advantages of concentric butterfly valves?
The structural characteristics of concentric butterfly valves include the alignment of the stem axis, the center of the disc, and the central body in the same position. This design results in a simple structure that is easy to manufacture. Most commonly, these valves are rubber lined, offering a reliable sealing solution for various applications.
What maintenance challenges are associated with concentric butterfly valves?
A disadvantage of the concentric butterfly valve is that the disc and seat are always in contact, leading to rapid wear due to scratching and resistance. Regular maintenance is crucial to ensure long-term functionality, as the interference fit between the valve disc and liner can degrade over time, impacting performance.
What types of concentric butterfly valves does GTEEK offer?
GTEEK provides a range of concentric butterfly valves suitable for various applications. For example, the Butterfly Valve - cast iron GG20, 316 Disc - PN16 - Wafer Type, EPDM is designed for durability and efficiency. Additionally, the Butterfly Valve - cast iron GG25, AISI316 Disc - PN16 - Wafer Type, NBR offers versatile applications, while the Butterfly Valve - cast iron GG25, EN GJS-400 Disc - PN16 - Wafer Type, EPDM ensures robust performance in demanding environments.