Triple Eccentric Butterfly Valve Introduction

Triple offset butterfly valves are high-end butterfly valves suitable for various applications, such as water, natural gas, petroleum, chemical, and pharmaceutical industries. ZZJG VALVE is a professional manufacturer of triple offset butterfly valves. Below is a detailed introduction to this type of valve.

1. Triple Eccentric Butterfly Valve Structural Design

- Eccentric Design: The valve stem axis is offset from both the butterfly plate center and the body center, and the valve seat rotation axis is at a certain angle to the valve body channel axis, forming a triple eccentric structure.

- Multi-layer Sealing Structure: The valve seat adopts a multi-layer sealing structure, such as a sealing surface of soft and hard stacked stainless steel sheets and flexible graphite plates, which can effectively prevent media leakage.

2. Triple Eccentric Butterfly Valve Working Principle

- The valve plate sealing surface and the valve seat sealing surface of the triple eccentric butterfly valve are not on the same plane. When the valve plate is closed, a wedge-shaped space is formed between the valve plate and the valve seat, allowing the valve plate to tightly seal the valve seat. Due to the eccentric design of the valve plate, the valve plate gradually detaches from the valve seat during the closing process, thereby reducing the friction between the valve plate and the valve seat and reducing the valve's opening and closing torque.

3. Triple Eccentric Butterfly Valve Features and Advantages

- Excellent Sealing Performance: The sealing structure is fundamentally changed from position sealing to torque sealing. The sealing effect is achieved by relying on the contact surface pressure of the valve seat, achieving zero leakage and withstanding a certain amount of reverse pressure impact.

- Low operating torque: The contact point between the butterfly valve plate and the valve seat changes gradually during opening and closing, resulting in low frictional torque, easier operation, lower requirements for the drive device, and reduced equipment costs and energy consumption.

- Long service life: The sealing surface uses hard sealing material with high hardness and wear resistance. Combined with low frictional torque, this reduces wear on the sealing surface, leading to a longer valve service life and lower maintenance costs.

- Good flow characteristics: The valve plate shape design minimizes resistance to the medium in the fully open state, resulting in a large flow coefficient, meeting the requirements for conveying large flow rates.

- Compact structure: The relatively simple structure, small size, light weight, small footprint, and easy installation.

4. Triple Eccentric Butterfly Valve Application

- Triple eccentric butterfly valves are widely used in petroleum, chemical, metallurgical, power, water treatment, gas, natural gas, construction, and municipal industries. They can be used to control the flow and pressure of media in pipelines, and can also be used to cut off or connect fluids.

ZZJG Valve provides the above information on triple eccentric butterfly valve introduction. If you want to know more about triple eccentric butterfly valve introduction, please contact us via WhatsApp or email.