I. Purpose: The valve is primarily installed on water and steam pipelines as a switching device (such as for steam turbines, boiler drainage, boiler periodic blowdown valves, and desuperheating water main valves). Currently, most thermal power plants use domestic ordinary valves or imported valves in their drainage systems. Due to the structure of these valves, the valve core and seat are eroded and worn out rapidly by high-temperature and high-pressure fluids over time, causing the valve to close loosely and resulting in internal leakage issues in the drainage system. In view of this, our company has developed a specialized valve that can solve the internal leakage problem - the erosion-free globe valve.
II. Standards and Norms

III. Brief description of structure:
1. When high-pressure medium enters the valve, it first undergoes sufficient pressure reduction and noise release in the valve cage. The valve disc and valve seat are designed in a concealed structure, so that the fluid will not erode the sealing surfaces of the valve core and valve seat, thus achieving a scour-free effect. By moving the valve disc up and down, the flow rate of the valve can be arbitrarily adjusted, exhibiting adjustability.
2. High temperature, high pressure, and erosion resistance: The main components are made of high-quality stainless steel. The sealing parts of the valve core and valve seat are specially processed using a build-up welding technique with stellite hard alloy, and the build-up welding layer on the sealing surface is not less than 2.5mm.
3. The valve disc and the valve cage are in contact without generating friction, and the valve cage is positioned vertically, which ensures that the valve is tightly closed without leakage and can be opened flexibly without any clamping stagnation or other issues.
4. The valve stem and valve disc adopt a flexible structure, which can adjust issues such as scratching and leakage caused by misalignment of the valve stem during the manufacturing process.
5. The surface of the valve rod has undergone corrosion-resistant nitriding treatment, resulting in excellent rigidity, wear resistance, and scratch resistance.
6. The packing material is flexible graphite with nickel wire added inside, which is soft and wear-resistant, and will not scratch the valve stem.
7. This valve can be used for a long time, and only the damaged internal components (including valve seat, valve disc, valve stem, valve cage, packing, etc.) need to be replaced on the pipeline.
IV. Main appearance