The core function of a pressure reducing valve is to stabilize upstream high pressure to the required downstream low pressure, while protecting downstream pipelines and equipment. Pressure regulation must follow an orderly procedure of "preparation-adjustment-verification-locking".

The basic principle of valve sealing surface grinding is to eliminate microscopic defects such as unevenness, scratches, and corrosion on the sealing surface through mechanical friction and material removal, achieving a highly flat, smooth surface that fits tightly against the mating sealing surface. This ensures the valve effectively prevents media leakage when closed.

Control valves are core control components in pipeline systems. Their core function is to precisely regulate key parameters of the medium (liquid, gas, steam, etc.) within the pipeline by changing the flow area between the valve core and seat, thus meeting the process requirements and stable operation needs of industrial production, energy supply, water treatment, and other scenarios.

1. Classification by Structural Form 2. Classification by function and application scenario 3. Classification by material 4. Classification by connection method 5. Classification by special working conditions.

1. Pressure Regulation and Stabilization.2. Protecting Equipment and System Safety.3. Energy Saving and Optimized Operation.4. Adapt to Different Operating Conditions.5. Flow Control Assistance.

Metal materials are the core choice for valve bodies due to their high strength and good pressure resistance. According to the material properties, they can be divided into cast iron, cast steel, stainless steel, non-ferrous metals and corrosion-resistant alloys.