Brief Introduction And Usage Of Gas Ball Valve

2 Piece Threaded Ball Valve is a valve that uses a ball with a circular channel as the opening and closing part, and the ball rotates with the valve stem to realize the opening and closing action. It is suitable for frequent operation, opening and closing quickly and lightly. The fluid resistance is small. The structure is simple, the relatively small volume, the weight is light, and it is easy to maintain. The sealing performance is good. It is not limited by the installation direction, and the flow direction of the medium can be arbitrary. There is no vibration and low noise.

The gas ball valve uses formed polytetrafluoroethylene packing and is widely used in the installation of pipelines such as natural gas, liquefied gas, and petroleum gas. It is generally used for post-meter valves.

It is also suitable for most high and medium pressure gas transmission occasions. The handle operating torque is stable, and the O-ring is used to prevent external impurities from entering the valve. And maintain the long-term sealing performance of the valve. The ball valve greater than DN150 is driven by a worm gear.

The gas ball valve is also suitable for pipeline systems with light structures, low-pressure cutoff (small pressure difference), and corrosive media. Flange-welded ball valves can also be used in low-temperature (deep-cold) devices and pipeline systems.

In the oxygen pipeline system of the metallurgical industry, ball valves that have been strictly degreased must be used. When the main pipelines in the oil pipeline and gas pipeline need to be buried underground, full-bore welded ball valves must be used.

When the adjustment performance is required, a ball valve with a special structure with a V-shaped opening must be selected. In petroleum, petrochemical, chemical, electric power, and urban construction, gas welded ball valves can be used for pipeline systems with working temperatures above 200 degrees.

Because the valve seat seal ring of the gas ball valve is usually made of plastic, the fire resistance and fire prevention of the ball valve should be considered when checking the structure and performance of the gas ball valve, especially in the petroleum, chemical, metallurgical and other departments.

When using ball valves in equipment and pipeline systems for flammable and explosive media, more attention should be paid to fire resistance and fire prevention.

Gas ball valves can be divided into: floating ball valves, fixed ball valves, elastic ball valves and oil-sealed ball valves according to the structural form; they can be divided into direct energy type, angle type and three-way type according to the channel, and the three-way type can be divided into T-shaped and L-shaped. According to the connection method, it can be divided into three types: threaded connection, flange connection and welding.