Fire-proof and anti-static ball valve is a kind of pipelines that can be used for natural gas, artificial coal gas, liquefied gas, city gas and non-corrosive gas. It has anti-static and fire protection devices, that is, it is installed between the ball and the valve stem, the valve stem and the valve body. The conductive spring enables the static electricity generated during the opening of the valve to be introduced into the ground through the set static electricity channel into the pipeline to achieve the purpose of eliminating static electricity. Avoid static sparking and ignite flammable media to ensure system safety. The fire protection device, that is, the ball valve is designed with double seals. When the soft gasket melts due to high temperature, the valve core ball is again designed to form a right-angle hard seal with the soft seal behind, forming a sealing relationship again.

The fire-proof anti-static ball valve is compared with the conventional ordinary ball valve. It will be used in a lot of industries, and its safety performance has also been improved a lot. For occasions prone to fire, it can effectively prevent internal leakage. The realization of this function mainly depends on the ball valve. Sealing ring, this kind of sealing ring is a double-layer seal, one layer of soft seal and one layer of metal seal. When the soft seal layer is damaged by burning, the metal seal can further fill the gap, which can play a key alternate sealing role. It prevents a large amount of media from leaking out and the spread of fire.

When the fire-proof and anti-static ball valve is opened and closed, there will be friction between the ball and the valve seat, and the static electricity generated by the friction will accumulate on the ball. This is not allowed for the ball valves used on the gas, fuel, and chemical pipelines. , It may cause pipeline explosion accidents. The anti-static structure of the ball valve is equipped with an electrostatic discharge device, which can export the electrostatic charge accumulated in the sphere in the first time, effectively ensuring the safe operation of the pipeline; generally, elastic components are usually used at home and abroad According to the standard, the connection between the ball and the valve body and the valve stem and the ball is below 12VDC, and the resistance value is below 10 ohms.

It should be noted that the fire-proof and anti-static functions of ball valves are not omnipotent. They can only play an emergency role and give more time to solve accidents. In addition to the use of fire-proof and anti-static ball valves in gas and oil pipelines, they also Certain fire-fighting measures such as explosion-proof and fire-resistance should be equipped, and relevant national regulations should be strictly observed.