X44W three-way stainless steel plug valve

Three way plug valve cast steel plug valve uses a plug body with a through hole as the opening and closing component of the valve. The plug body rotates with the valve stem to achieve opening and closing action. The plug body of a rotary valve is mostly a conical (or cylindrical) body, which forms a sealing pair with the circular hole surface of the valve body. Plug valve is the earliest type of valve used, with a simple structure, quick opening and closing, and low fluid resistance. Ordinary plug valves rely on the direct contact between the precision machined metal plug body and the valve body to seal, resulting in poor sealing performance, high opening and closing force, and easy wear. Usually, they can only be used in situations with dry low but not high dry 1 water) and small diameters (less than 100 millimeters). In order to expand the application scope of the rotary valve, many new structures have been developed. Oil lubrication plug valve is the most important type. Special lubricating grease is injected from the top of the plug body into the valve body cone hole and between the plug body, forming an oil film to reduce the opening and closing torque, improve sealing performance and service life. Its working pressure can reach 64 megapascals, the maximum working temperature can reach 325 ° C, and the maximum diameter can reach 600 millimeters. There are various forms of channels in the plug net. The common through type is mainly used to cut off fluids. Three way and four way plug valves are suitable for fluid reversing.

Main advantages of rotary valve

1. Suitable for frequent operation, quick and lightweight opening and closing.

2. Low fluid resistance

3. Simple structure, relatively small volume, light weight, and easy maintenance

4. Good sealing performance

5. Unrestricted by installation direction, the flow direction of the medium can be arbitrary

6. No vibration, low noise