1. Dual‑function integration – Combines breather valve and flame arrestor in one body, reducing roof penetrations, simplifying installation, and enhancing system reliability.
2. Independent dual‑disc system – Pressure disc and vacuum disc each have their own spring and sealing assembly, actuating precisely at set points without cross‑interference, eliminating misoperation risks.
3. Stable operation and tight sealing – Metal‑to‑metal hard seating ensures zero leakage when closed, with small differential between opening and reseating pressures for responsive action.
4. Superior environmental adaptability – Equipped with rain cover, dust screen, and drain holes to withstand rain, sandstorms, and intense sunlight, suitable for exposed tank farms.
5. Flexible corrosion‑resistant materials – Body options include aluminum alloy, carbon steel, or stainless steel; all internal wetted parts are stainless steel, compatible with oils, aromatics, alcohols, and acid/base media.
6. Low flow resistance – Rounded internal flow passages minimize pressure drop, maintaining stable tank pressure even under high‑rate breathing conditions.
7. Low maintenance – Flame arrestor element can be extracted without tools; disc assembly is quickly detachable for routine inspection and cleaning, requiring no special skills.
8. Full standard compliance – Designed and manufactured per SY/T 0511, ISO 16852, and GB 5908, with rigorous flame‑arresting performance testing prior to delivery.