METAL SEATED BALL VALVE

Product Description

Hard sealing flange ball valve is used in the oil, natural gas, coal and ore mining, refining and processing and pipeline transportation systems; In the production of chemical products, medicine and food; In the power production system of hydropower, thermal power and nuclear power; Hard sealing ball valve is used in water supply and drainage, heat supply and gas supply systems of cities and industrial enterprises; In the drainage and irrigation system of farmland; Hard sealing ball valve is an important mechanical product closely related to production construction, national defense construction and people's life. Ball valves are used in various pipeline systems to cut off or connect the medium flow, so that the medium can be transported to each designated point according to the predetermined procedure.

Stem anti flying structure

The valve rod of hard sealed ball valve is designed with anti flying structure, which can ensure that the valve rod will not be blown out by the medium even in the case of abnormal pressure rise in the valve chamber and failure of the packing pressing plate The valve rod of metal > hard sealing flange ball valve adopts the bottom mounted structure design with inverted seal. The sealing force of inverted seal increases with the increase of medium pressure, so it can ensure the reliable sealing of valve rod under various pressures.

Fire proof structure

In case of fire of hard sealed ball valve, non-metallic materials such as packing and valve seat will be burned out, and a large amount of leaked media may promote the spread and expansion of the fire. The fireproof structure of > metal > hard sealed flange ball valve can prevent a large amount of media leakage. Once the valve seat is burned out, the ball will directly contact the metal surface on the valve body, so as to prevent a large amount of media from leaking from the burned valve seat. The mechanism design of fire protection and anti-static meets the requirements of api607, jb/t6899 and bs6755.

Seat structure

The hard sealed ball valve is a double line sealing structure designed with the combination of new technologies, which can naturally release the valve seat and ensure reliable sealing under high, low pressure and vacuum conditions. When the medium pressure operates in the low-pressure area, the contact area between the valve seat sealing ring and the ball is small, so there is a large sealing specific pressure to ensure the reliable sealing of the valve seat. When the medium pressure operates at a high level, the contact area between the valve seat sealing ring and the ball becomes larger, so the valve seat sealing ring can withstand a large medium thrust without damage. The ball valve with metal seal and high temperature resistant composite material structure design can be used for higher temperatures. This structure has one-way sealing function.