Ball valve 904L

1、 Material and Corrosion Resistance
The 904L ball valve is made of super austenitic stainless steel (UNS N08904), with a composition of 00Cr20Ni25Mo4.5Cu, and has the following characteristics:
High corrosion resistance: It exhibits excellent performance in dilute sulfuric acid (0-98% concentration), phosphoric acid, and chloride solutions, especially suitable for chloride containing ion media such as seawater and brackish water.
Stress corrosion resistance: Carbon content ≤ 0.02%, avoiding the precipitation of carbides after welding or heat treatment, and reducing the risk of stress corrosion.
High temperature adaptability: It can work stably for a long time in dilute sulfuric acid below 40 ℃.
2、 Technical parameters and structural design
Parameter Category Typical Value/Range Remarks
Nominal diameter DN15-DN500 supports flange, butt welding, and threaded connections
Pressure rating PN1.0-16.0MPa/Class150-300LB American and national standards optional
Sealing form: Soft seal (PTFE/EPDM) or hard seal. Hard seal is suitable for high temperature and high pressure
Drive mode: manual, pneumatic, electric, electric. Protection level: IP55
Structural optimization:
Spherical design: The trapezoidal truncated cone structure reduces friction on the sealing surface and enhances wear resistance (patented technology).
Anti corrosion lining layer: Some models are covered with a 3-5mm fluoroplastic lining layer on the inner wall, forming a double-layer protection.