High-pressure bidirectional all-metal sealed chemical butterfly valve
By employing an all-metal hard seal structure and an optimized packing seal mechanism, the sealing performance and stem stability issues of chemical butterfly valves under high-pressure conditions have been resolved, achieving bidirectional reliable sealing and long-term stable operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI SHIHUA VALVE FACTORY
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing chemical butterfly valves have poor sealing performance under high pressure, high temperature and highly corrosive media. In particular, they cannot achieve reliable bidirectional sealing when the fluid flows in reverse, and the valve stem is prone to radial displacement, which poses a safety hazard.
It adopts an all-metal hard seal structure, combined with a bidirectional symmetrical arrangement of elastic metal sealing rings and an optimized packing sealing mechanism. The valve stem is supported by a sliding bearing to ensure a precise fit between the butterfly plate and the sealing surface, achieving a metal-to-metal hard seal fit.
Achieving reliable bidirectional sealing under high-pressure conditions improves wear resistance and corrosion resistance, reduces leakage risk, lowers maintenance costs, and ensures stable operation of chemical fluid transportation systems.
Smart Images
Figure CN122407799A_ABST