Manufacturing method document number of leak-proof ball valve: 14502937 navigation: x technology > latest patent > engineering parts; Adiabatic; The utility model relates to a leak-proof ball valve.
There is a stuffing box in the ball valve, and the valve stem is sealed with the valve seat after being inserted, and there is also a sealing structure between the stuffing box and the valve stem to protect the valve stem from discharging liquid during rotation. Because the valve stem on the ball valve is not often used, it may cause corrosion between the valve stem and the stuffing box, thus affecting the clearance between the valve stem and the stuffing box and the rotation of the valve stem. When the ball valve is used in the circulation process of some high-pressure or high-temperature liquid media, it is easy to cause liquid leakage and even safety accidents.
Stainless steel anti-leakage ball valve, stainless steel elbow and carbon steel elbow are mainly different in material, and their chemical composition will make the elbow surface rust and corrode for a long time. According to the manufacturing standards, it can be divided into national standard, ship standard, electric standard, water standard, American standard, German standard, Japanese standard and Russian standard. According to the manufacturing method, it can be divided into pushing, pressing, forging and casting. Used for connection of pipe elbows. When installing, the stainless steel elbow can be directly installed on the pipeline according to the connection mode, and installed according to the use position. In general, it can be installed in any position of the pipeline, but it needs to be sealed to prevent leakage and affect the normal operation of the pipeline. When the ball valve, globe valve and gate valve of stainless steel elbow are used, they are only allowed to be fully opened or closed, and the flow rate is not allowed to be adjusted to avoid sealing.