The explosion-proof card sleeve needle valve is a pointed cone that is inserted into the valve seat like a needle, hence the name. Needle valves can withstand greater pressure and have better sealing performance than other types of valves, so they are generally used for sealing gas or liquid media with lower flow rates and higher pressures.

Characteristics of explosion-proof card sleeve needle valve

1. Low fluid resistance. The resistance coefficient is equal to that of a pipe segment of the same length;

2. Simple structure, small size, and light weight;

3. Tight and reliable, at that time, the sealing surface of ball valves was widely made of plastic, with good sealing performance, and had also been widely used in vacuum systems;

4. Easy to operate, with sensitive opening and closing. It only needs to rotate 90 ° from fully open to fully closed, making it convenient for remote control;

5. Easy to repair, the ball valve structure is simple, and the sealing ring is generally movable, making disassembly and replacement relatively easy;

6. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and the passage of the medium will not cause corrosion of the valve sealing surface;

7. Stainless steel ball valves have a wide range of applications, with diameters ranging from a few millimeters to several meters, and can be used from high vacuum to high pressure.