Cast steel flange ball valve, the seal is embedded in the stainless steel seat, and the metal seat is equipped with a spring at the back end of the metal seat. When the sealing surface is worn or burned, the metal seat and the ball are pushed under the action of the spring, and the metal seal has a unique automatic pressure relief function. When the medium pressure in the valve cavity exceeds the preload force of the spring, the exit side seat is withdrawn from the ball to achieve the automatic pressure relief effect, and the seat automatically returns after pressure relief. Suitable for water, solvents, acids, natural gas and other commonly used working media, but also suitable for oxygen, hydrogen peroxide, methane, ethylene and other poor working conditions of the medium, in all walks of life has been a good application, then, the following together to understand the structural design of Tianjin cast steel flange ball valve!
Cast steel flange ball valve structure features:
1. Unique seat sealing structure
The cast steel flanged ball valve seat has a front seal design, which has a two-way seal and automatic pressure relief function in the middle chamber. The seal bracket embedded with the sealing material is floating and is applied by a spring. In the closed position, the sealing surface is always in close contact with the ball to ensure that the valve forms a leak seal at high and low pressure differences.
2, automatic pressure relief structure
When the pressure of the middle chamber is abnormally increased, the single-sealed structure ball valve has the function of automatic pressure relief, and the double-sealed structure ball valve is relieved by the pressure relief device on the valve body.
3, sealed first aid function
Cast steel flanged ball valve design AIDS the seat emergency sealing system. When the sealing surface is damaged, the corresponding sealant is injected through the auxiliary sealing system for first aid, and the auxiliary system can also clean and lubricate the valve seat area if necessary.
4, anti-static device
When operating the valve, static electricity will be generated due to the friction between the ball seat, which will accumulate in the ball column, in order to prevent the generation of electrostatic sparks, especially the anti-static device is set on the valve to export the generated static electricity.
5. Fireproof structure
The seat of the company's fixed ball valve adopts a unique structure. In case of fire, when the non-metal sealing surface material is burned, the metal ring pushes the seat to seal tightly with the ball under the action of the spring force, preventing the spread of fire and media overflow.
6. Full diameter structure and reduced diameter structure
In order to meet the needs of customers, cast steel flange ball valve has full diameter series and reduced diameter series. The cylinder diameter of the full diameter ball valve is consistent with the cylinder diameter, which is easy to clean. Reduced ball valve light weight, is a part of the fluid resistance of the same caliber globe valve, broad prospects.
Cast steel flange ball valve is located in the oil, natural gas, coal and ore drilling, refining and processing and pipeline transportation system of chemical products, medicine, food production; Hydropower, thermal power and nuclear power production systems in the water supply and drainage, heating and gas supply systems of urban and industrial enterprises; In the farmland drainage and irrigation system, the gold output system has been widely used, which is an important mechanical product related to production construction, national defense construction and people's life. Tianjin cast steel flange ball valves are sealed in various piping systems for cutting off or putting media flow, and transporting the media to each point in accordance with the reserved steps.
Post time: Oct-20-2023