316L Stainless Steel + Cemented Carbide Sealing: Solutions for Extending The Service Life of DN300 PN40 Fixed Ball Valves in Strongly Corrosive Media

In industrial production, BALL VALVES, as the core components of fluid control systems, have their performance directly affecting the stability and safety of the systems. Especially in environments with strongly corrosive media, how to extend the service life of ball valves and improve their reliability has become a key issue. This article will mainly discuss the design of ball valves with 316L stainless steel material combined with cemented carbide sealing technology and its application in DN300 PN40 FIXED BALL VALVES.

I. ADVANTAGES OF 316L STAINLESS STEEL MATERIAL

· Corrosion Resistance: 316L stainless steel containing molybdenum has excellent resistance to strongly corrosive media such as chlorides and sulfuric acid, and can also maintain stable performance in harsh environments such as those involving acids, alkalis, and salts.

· Mechanical Properties: 316L stainless steel has good toughness and high-temperature resistance, and is suitable for high-pressure and high-temperature working conditions.

· Sealing Performance: Through precision machining processes, 316L stainless steel ball valves can achieve a zero-leakage sealing effect, ensuring the reliability of fluid control.

II. APPLICATION OF CEMENTED CARBIDE SEALING TECHNOLOGY

· Wear Resistance: After special treatment, the surface of cemented carbide has extremely high hardness and can effectively resist particle wear and erosion.

· Sealing Performance: Cemented carbide combines tightly with the ball to achieve a zero-leakage sealing effect, especially suitable for high-pressure and high-wear environments.

· Service Life Extension: The service life of cemented carbide sealed ball valves is several times longer than that of traditional soft-sealed ball valves, especially outstanding in corrosive media.

III. DESIGN FEATURES OF DN300 PN40 FIXED BALL VALVES

· Structural Optimization: Adopting a floating ball structural design, the fluid pressure directly acts on the ball, reducing the force on the seat and thus reducing wear.

· Seal Ring Optimization: Using PTFE or cemented carbide seal rings to ensure good sealing performance even under high-pressure and high-temperature environments.

· Operational Convenience: The ball can complete the opening and closing actions by rotating 90 degrees, which is easy to operate and has low maintenance costs.

IV. Comparative Analysis Table: Performance of Ball Valves with Different Materials and Designs

V. CONCLUSION
By adopting 316L stainless steel material combined with cemented carbide sealing technology, the service life of DN300 PN40 FIXED BALL VALVES in strongly corrosive media has been significantly improved. This design not only enhances the corrosion resistance and sealing performance of ball valves but also reduces maintenance costs, and is suitable for high-demand industries such as petrochemical and food processing.