Wenzhou Longwan Junkai Valve Factory is located in Longwan, the valve capital of China. Is a professional manufacturer of stainless steel valves. The main products are: stainless steel ball valve, stainless steel Y-type filter, stainless steel flange, stainless steel mirror, stainless steel gate valve, stainless steel globe valve, stainless steel check valve, etc. According to the effective operation of the ISO9001 quality system, Junkai has established a complete quality inspection organization and formed a complete quality control network. With excellent process equipment, high-quality personnel and service awareness, we guarantee and improve the technical content of products, and effectively protect the final economic interests of users.
Today Junkai will share with you the characteristics of American Standard stainless steel ball valves! The main function of the American standard ball valve is to cut or connect the medium, and also to regulate and control the fluid. Its opening and closing part is a sphere, which mainly relies on rotating 90° around the axis of the valve stem to achieve the purpose of switching.
The following is an introduction to the characteristics of American Standard stainless steel ball valves:
1. Anti-shatter structure of valve stem
Generally, when the medium passes through the valve, the pressure in the valve stem cavity may push the valve stem out. Then in order to prevent this situation, the bottom of the valve stem provides a boss structure, even if the packing or thrust bearing is burned or damaged, the valve stem will become a boss due to the medium pressure of the valve body, and it can also use a large amount of damaged stuffing part. The valve body is sealed and tightly contacted to prevent medium leakage.
2. Hydrostatic pressure device
Static electricity is caused when the valve is operated due to friction between the ball and the seat made of non-metallic material such as PTFE. Charge is stored in a row of balls. In order to prevent static electricity and sparks, a special anti-static device is installed on the valve to release the generated static electricity.
3. Fireproof structure
The American stainless steel ball valve seat adopts a special structure, and the non-metallic sealing surface material will burn in the event of a fire. The ring uses the elastic force of the spring to push the valve seat and the ball into and seal to prevent the fire from spreading and the medium from flowing out.
4. There is no leakage structure on the central flange.
The connection between the valve body and the left valve body is sealed with a gasket to avoid fire. Leakage of the seal in this area due to high temperature, vibration, etc. is specially designed to prevent leakage by allowing the valve body to make metal-to-metal contact with the left valve body to form an orifice flange.
5. Automatic pressure relief structure
When confined in the valve cavity, when the medium changes due to the pressure of the piping system or the temperature of the medium, and when the pressure inside the middle cavity rises abnormally, the medium inside the middle cavity will generate its own thrust. Press the valve seat to release it automatically pressure and secure the valve.