Flange Needle Valve

The main connection method for flange needle valves is flange connection, which generally has straight through and angle structures. Needle valves are suitable for high pressure, so the flange surface is mainly concave flange, convex flange or concave convex surface. Of course, flange needle valves selected in low-pressure pipeline equipment also have flat flanges. The working principle of the flange needle valve produced by Shanghai Meiyanyi Pump Valve is to control the fluid through a pointed conical opening and closing component. When the needle valve is closed, the opening and closing member completely closes the valve port, and fluid cannot pass through; When the needle valve is opened, the opening and closing member gradually opens the valve port, and the fluid can gradually pass through. The opening and closing components of the needle valve can be directly driven by the handwheel to drive the valve stem, achieving rotational opening and closing. The structural characteristics of needle valves include a needle shaped valve plug, which can achieve maximum fine adjustment from closing to opening.