1. Full sulfur resistant material certification
All pressure bearing components in contact with the medium (valve body, valve cover, valve disc, valve stem) are made of NACE certified sulfur resistant materials (such as A105N, F316L, F6a, etc.) to ensure long-term safety in wet hydrogen sulfide environments.
2. Micro opening structure, precise release
The valve disc has a small opening height and moderate discharge capacity, suitable for liquid or acidic medium systems that require controlled discharge, reducing the loss of valuable or harmful media.
3. Alloy steel hard seal ("H" type)
The sealing surface is welded with sulfur resistant alloy steel, which not only has sulfur resistance but also ensures the reliability of hard sealing under high temperature and high pressure.
4. Sulfur resistant spring design
Both the spring material and protective coating consider sulfur resistance requirements to prevent hydrogen embrittlement and corrosion, ensuring long-term stability of elasticity.
5. Strict leakage level control
For toxic acidic media, valve sealing design is more stringent, striving to achieve lower leakage rates (such as complying with API 527 standards).