Butterfly valves are widely used in thermal pipelines, boiler auxiliary machinery systems, petrochemical and metallurgical industries due to their compact structure, small size, light weight, convenient operation, reliable performance and simple maintenance. They are used to cut or adjust various corrosive and non-corrosive materials. Corrosive medium. Its products are divided into centerline, single eccentric, double eccentric and triple eccentric structures. Metal hard seal butterfly valve is an eccentric structure. It is an extension and development of the general soft seal butterfly valve to the medium and high pressure field. In addition to the original characteristics of the butterfly valve, it also has anti-aging, radiation, durable, long life, high temperature and pressure resistance. Wide range of applications.
Features and Benefits of Multi-layer Hard Seal Butterfly Valves
1. Multi-level hard seal butterfly valve seal is composed of soft and hard metal sheets laminated. Through high-precision machining, it is embedded on the butterfly plate to match the valve seat. It has the dual advantages of metal seal and elastic seal. Excellent sealing performance at high temperatures.
2. It adopts three-dimensional eccentric structure, and there is almost no friction between the valve seat and the butterfly plate, and it has a tighter sealing function as it closes.
3. Compact structure, flexible operation, small size, light weight, reliable sealing performance, convenient maintenance and long service life.
4. Equipped with a sealing adjustment device. If the sealing performance is reduced after long-term use, the sealing ring of the butterfly plate can be adjusted closer to the valve seat to restore the original sealing performance, which greatly increases the service life.
5. The sealing vice is made of stainless steel, and adopts special processing during the manufacturing process. It has the characteristics of high temperature resistance, high pressure, wear resistance and corrosion resistance.
Features and Benefits of Metal Elastic Hard Seal Butterfly Valves
Along with the rapid development of science and technology in today's world, metal-sealed elastic butterfly valves are displayed in front of the world with their unique charm, such as small size, light weight, flexible operation, easy installation, simple structure, erosion resistance and high temperature resistance. One standard valve 's metal elastic seal butterfly valve is highly favored for its rigorous design, exquisite appearance and fashionable appearance.
Its outstanding features are as follows:
1. Full rigidity and reliable sealing: In order to eliminate the sensitivity of the metal seal butterfly valve to the deformation of the valve body, the rigidity of the valve body must be increased. This valve adopts the enterprise design standard higher than the minimum wall thickness of the national standard butterfly valve body. The internal and external ribs are reasonably arranged to make them rigid, thereby ensuring the reliability of the seal.
2. Opening freely, the operating torque is significantly reduced, and the improved sealing curve of the triple eccentric butterfly plate is more rounded, which means that the deformation of the valve seat is smaller , and the actual deformation of the valve seat is much smaller than the elasticity of the metal. range. Thus, the margin of elastic deformation of the valve seat is widened, and the elastic range of the material used will not be exceeded even under a high temperature state.
In addition, the axial displacement of the butterfly plate along the pipeline is also more trace, which will reduce the amount of deflection and deformation of the valve stem along the flow channel axis, and ensure the normal contact accuracy of the valve stem and the sleeve. Because of this, it can open freely and the operating torque is much smaller than other similar butterfly valve products. This extremely creative design idea has made Yibiao Valve a qualitative leap in the comprehensive quality and performance of some butterfly valve products.
3. The use of high temperature resistant materials and advanced spray welding technology enables the butterfly valve to reach a wide range of operating temperatures, thus meeting the requirements for temperature adjustment and low temperature conditions. One standard
4, the use of high-hardness materials and internal parts tend to streamline the shape design makes this valve resistant to erosion and long life.