DO YOU KNOW THE OPERATION AND APPLICATION OF BALL VALVE?

The ball valve is evolved from a plug valve. Its opening and closing member is a ball. The ball is rotated 90 ° around the axis of the valve stem to achieve the purpose of opening and closing. The ball valve is mainly used to cut off, distribute and change the medium flow direction on the pipeline. The ball valve designed as a V-shaped opening also has a good flow adjustment function. Do you know where it works?

 

 

Application of ball valve

Because the valve seat seal ring of ball valve is usually made of plastic, so when choosing the structure and performance of the ball valve, the fire resistance and fire resistance of the ball valve must be considered, especially in petroleum, chemical, metallurgy and other sectors, inflammable and explosive Ball valves should be used in media equipment and piping systems. Pay more attention to fire resistance and fire prevention.

 

In general, ball valves are recommended for double-position adjustment, strict sealing performance, mud, wear, necking passage, rapid opening and closing action, high pressure cut-off, low noise, cavitation and gasification. Ball valve is also suitable for pipelines with light structure, low pressure cut-off (small pressure difference) and corrosive media. Ball valves can also be used in low temperature (cryogenic) installations and piping systems.

 

In the oxygen pipeline system of the metallurgical industry, a ball valve that has undergone strict degreasing treatment is required. When oil pipelines and gas pipelines need to be buried underground, full-diameter welded ball valves are required. When adjusting performance is required. In petroleum, petrochemical, chemical, electric power, and urban construction, metal-to-metal sealed ball valves can be used for piping systems operating at temperatures above 200 ° C.

 

 

Applicable principles of ball valves

1. Flange-connected ball valves are used for pipelines and storage equipment for refined oil.

2. For city gas and natural gas pipelines, use floating ball valves with flange connections and internal thread connections.

3. In the oxygen pipeline system of metallurgical system, a fixed ball valve which is strictly degreased and flange connected should be selected.

4. For the devices and piping systems of corrosive media such as acid and alkali in chemical systems, all stainless steel ball valves made of austenitic stainless steel and with polytetrafluoroethylene as the seat seal ring should be used.

5. Metal-to-metal sealed ball valves can be selected for metallurgical systems, power systems, petrochemical installations, and high-temperature medium pipeline systems or devices in urban heating systems.

6. Oil and natural gas transmission pipelines, where the pipelines need to be cleaned first and buried underground, ball valves with full-pass and fully-welded structure are selected; for buried cables, full-pass welded or flanged connections are selected.

 

 

What else do you want to know about ball valves? We provide you with various types of valves, such as ball valve, ball valve for steam, butterfly valves, check valves, forged steel valves, etc. If you have any purchase needs, please contact us in time.