Fireproof anti-static ball valve and ordinary ball valve difference and selection

Fireproof and anti-static ball valve is a kind of natural gas, artificial coal gas, liquefied gas, city gas and non-corrosive gas pipelines, with anti-static, fireproof device, that is, in the ball and valve stem, valve stem

A conductive spring is arranged between the valve body, so that the static electricity generated in the opening process of the valve can be introduced into the ground through the static electricity channel set to achieve the purpose of removing static electricity. Avoid electrostatic spark

Ignite flammable media to ensure system safety. The fire protection device, that is, the ball valve design has two seals, when the soft gasket melts due to high temperature, the spool ball is again designed at a right Angle behind the soft seal

Seal, and form a sealed relationship again.

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Fireproof anti-static ball valve and conventional ordinary ball valve in contrast, in the use of the industry will be a lot of, in the safety performance, also improved a lot, for fire prone occasions, can effectively prevent internal leakage, to achieve this function mainly rely on the ball valve seal ring, this seal is a double seal, a layer of soft seal plus a layer of metal seal, when the soft seal layer is destroyed by burning, The metal seal can further fill the void and play a key role in the alternate seal, which can prevent a large amount of media leakage and the spread of fire to a certain extent.

When the ball valve is operated on the switch, there will be mutual friction between the ball and the seat, and the static electricity generated by friction will gather on the ball, which is not allowed for the ball valve used on the gas, fuel and chemical pipelines, and may cause pipeline explosion accidents. The ball valve of the anti-static structure is equipped with an electrostatic export device, which can be used in the first time. The electrostatic charge gathered in the sphere is exported to effectively ensure the safe operation of the pipeline; Generally, the connection method of elastic elements is usually used at home and abroad, and according to the standard provisions, the sphere and the valve body and the stem and the sphere are below 12VDC, and the resistance value is below 10 ohms

It should be noted that the fire prevention and anti-static function of the ball valve is not universal, can only play an emergency role, to fight for more time to solve the accident, in addition to the use of fire prevention and anti-static ball valves in gas and fuel pipelines, should also be configured with certain fire protection measures such as explosion-proof fire resistance, strictly abide by the relevant national regulations.