Ball Model: Q67Y Buried fully welded ball valve is fixed inside the modern city of vehicular and pedestrian traffic density, road conditions are very complex. So in the construction and maintenance of gas supply pipes and heating supply pipeline construction time and construction of its security requirements are very high. The all-welded ball valve, can be directly attached deep underground. The method of construction using the latest engineering technology to maximize reduce the space occupied by the valve control and greatly reduce construction costs and engineering time. But also to prevent the risk of gas explosion, all welded ball valve is very safe. When the buried ball drive, the operator does not need to enter the underground, just drive operation performed on the ground can be very safe and convenient. Buried fully welded ball valve fixed purposes: 1. City gas: gas export pipeline, the main trunk and each branch supply pipe. 2. Central Heating: large heating equipment export pipeline, the main trunk and feeder lines. 3. Heat exchangers: Pipeline and each loop opening and closing. The steel plant: a variety of liquid pipelines, gas pipelines optional release, gas and heat supply pipelines, fuel supply pipe. 5. All kinds of industrial equipment: various heat treatment pipeline, industrial gas and heat pipes. Features: 1. The one-piece fully welded ball valve, there will be no external leakage and so on. 2. As the seat is carbonized Teflon seal rings and coffee springs, so that changes in pressure and temperature adaptability, in marked pressure and temperature range will not produce any discharge slip. 3. Processing sphere detector with advanced computer tracking and detection, so the sphere of precision. 4. As the body material with pipe material, it would not appear uneven stress, it will not go through because of the earthquake and ground vehicles and sometimes deformed, anti-aging pipelines. 5. The sealing ring body with content 20% C (carbon) is PTFE material, will guarantee completely leak (0%). 6. Buried welded ball valve can be directly buried in the ground, do not build high large valve well, just set up a small shallow in the ground, saving construction costs and engineering time. 7. According to the construction and design requirements of piping, adjust the length of the valve body and the valve stem height. 8. sphere machining accuracy is very precise, easy operation, no adverse interference. 9. Use of advanced materials, energy security than PN25 pressure. 10. Compared with the same industry, the same kinds of product specifications, the body is small, and good looks.