The opening and closing component of stainless steel gate valves is the gate, and the direction of the gate's movement is perpendicular to the direction of the fluid. The gate valve can only be fully open and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces. The commonly used mode of gate valve is that the two sealing surfaces form a wedge shape, and the wedge angle varies with the valve parameters, usually 50. When the medium temperature is not high, it is 2 ° 52 '. The gate plate of the wedge gate valve can be made into a whole, called a rigid gate plate; It can also be made into a gate that can produce slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This type of gate is called an elastic gate. Stainless steel materials are divided into 304 stainless steel, 316 stainless steel, and 321 stainless steel. The representation method is Z41H-16P.

Selection of stainless steel gate valves

1. Refer to the general standards for valves, such as valve specifications and categories, which mainly include nominal diameter, nominal pressure, and temperature requirements;

2. The selection of stainless steel gate valve material. Choose materials suitable for oneself based on the working conditions, such as cast iron, cast steel, carbon steel, stainless steel, ceramics, etc. If the budget is insufficient, cast iron valves can be chosen. If the budget is sufficient, stainless steel gate valves are recommended. Because the lifespan of stainless steel gate valves can reach 10 times that of ordinary metal valves, which is very good

3. The operating mechanism of the valve; There are mainly manual, electric, pneumatic, manual hydraulic, electro-hydraulic, etc., which also need to be selected according to your specific needs and budget. If manually operated, the price is relatively low, and electric stainless steel gate valves are more convenient to use and can achieve automated operation.

4. Check if the valve has undergone performance testing. The valve must undergo pressure testing before leaving the factory;

5. Check whether the internal and external anti-corrosion of stainless steel gate valves meet the requirements;

6. The packaging and transportation method for stainless steel gate valves should be equipped with lightweight blocking plates on both sides during valve transportation. Large diameter valves should also be packaged with a simple wooden frame to prevent damage during transportation. Medium and small diameter valves can be tied with grass ropes and transported in containers. The Qigao gate valve is good, and the quality is directly proportional to the price, which is very popular