Three-Eccentric Metal Hard Seal Butterfly Valve

1. Three-Eccentric Design: Frictionless sealing, extending service life.
2. Radial Dynamic Balanced Sealing System: Reduces operating torque, ensures two-way sealing.
3. Composite Material Sealing Ring: Environmentally friendly, wear-resistant, high leakage standard.
4. Replaceable Seat Ring: Facilitates on-site maintenance.
5. High-Performance Packing Sealing: Leakage ≤20 PPM, extends maintenance-free period.

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Description

Three-Eccentric Structure: Adds an angular eccentric to achieve “non-friction” sealing during valve operation, greatly extending the valve’s service life.
Radial Dynamic Balanced Sealing System: Utilizes national patented technology to balance the forces on both sides of the butterfly plate inlet and outlet, reducing the valve opening torque to 1/3 of that of common butterfly valves, ensuring reliable two-way sealing.
Composite Material Sealing Ring: The butterfly plate’s sealing ring is made from a composite of stainless steel, graphite, carbon fiber, and PTFE, offering better environmental protection, wear resistance, anti-flush properties, and reliability, with leakage rates meeting ANSI B16.104 WI or ISO5208 A standards.
Replaceable Seat Ring/Seal Ring Design: Facilitates on-site maintenance with optimized material selection and sealing structure based on actual working conditions.
High-Performance Packing Sealing: Features a packing-combined sealing system with a leakage rate ≤20 PPM, extending the maintenance-free period. The valve stem is designed with a “blow-out structure” in accordance with API 609 standards.