With the continuous development of industry, there is an increasing demand for ball valves, especially ball valves under high temperature and high pressure harsh conditions. Ball valves are required to have higher performances such as wear resistance, erosion resistance, high temperature resistance, and corrosion resistance. Although the traditional full-bore ball valve has surface hardening treatment through surfacing, spraying and other technologies, its service life, cost and performance still cannot meet the requirements of use, such as industrial silicon, coal chemical industry, blast furnace gas, gas and other harsh conditions.

Double eccentric half-ball valve is a new product developed by absorbing the advantages of ball valve, V-shaped valve and rail ball valve with different structures. The ball valve adopts double eccentric sealing structure, which has small wear, small torque, good sealing performance and long service life. The valve seat and half-ball are processed by special hardening process, which is especially suitable for the requirements of wear resistance, scouring resistance, corrosion resistance and high temperature resistance under harsh working conditions.

Structural Characteristics

1. The half-ball of the double eccentric half-ball valve adopts double eccentric design, the sealing effect is reliable, the torque is small, the service life is long, and it can be disengaged instantly.

2. The valve seat adopts a floating design, which reduces the difficulty of processing and ensures that the center line of the valve seat coincides with the center point of the spherical surface of the half-ball, thereby improving the sealing performance.

3. The seal between the valve seat and the valve body adopts a hard seal structure, which is suitable for high temperature and high pressure working conditions.

4. The valve seat and the half-ball are hard-sealed, so the valve can be used in high temperature and high pressure conditions.

Application

Double eccentric half-ball valves are suitable for the requirements of various general industries, such as water, sewage, waste water, steam, gas, pulp and other media. If the sealing pair is made of Co-Cr-W hard alloy, and has fire resistance, explosion-proof and anti-static functions, it is suitable for medium and high temperature medium requirements, such as gas, coke oven gas, water gas and other occasions. If the sealing pair (half ball, valve seat) and the flow channel of the valve body are processed with special tungsten carbide technology, it will have the advantages of high efficiency, energy saving, good wear resistance, reliable sealing performance, easy operation, rapid opening and closing, and long service life. Ideal for valves on pipes in the industrial silicon industry. It is an ideal choice for valves used on pipelines in the industrial silicon industry.

At present, products of various specifications of double eccentric half-ball valves have been applied in various projects in different industries, and the effect is good, and the scope of use is gradually expanding. Our website:https://www.dvsvalve.com