High-Pressure (>1000psi) Butterfly Valves

Cryogenic Butterfly Valves High-Temperature Butterfly Valves Corrosion-Resistant Butterfly Valves High-Pressure Butterfly Valves API609 Butterfly Valves OEM Butterfly Valves

The Challenge Pressure, Corrosion & Fire Our Solution Materials & Structural Design Recommended Valves Find The Right Product

Conquering the ‘Impossible Triangle’

For deep-sea oil & gas, petrochemicals, and critical infrastructure.

The Operational Environment

In critical service applications, standard valves are a liability. The operational environment presents a combination of extreme challenges where failure is not an option. We understand that valves in these settings must move beyond "adequacy" and deliver absolute, proven "excellence" to ensure safety, reliability, and profitability.

Key Demands

Extreme Pressure: Must withstand operating pressures greater than 1000 PSI (Class 600) up to 2500 PSI (Class 1500) without leakage or structural fatigue.
Aggressive Corrosion: Must resist highly corrosive media, including wet H₂S (sour gas), chlorides, and strong acids that cause rapid material degradation.
Absolute Fire Safety: Must guarantee valve integrity and containment during a fire, meeting strict API 609 certifications to protect life, assets, and the environment.

The "Impossible Triangle"

Engineers often refer to the simultaneous combination of High Pressure, Severe Corrosion, and Fire Safety as the 'impossible triangle'.

A valve must excel in all three areas at once, requiring a holistic approach to design, material science, and manufacturing that few can achieve. This is our specialty.

An Engineered, Multi-Layered Defense

Our solution is not a single feature, but a synthesis of advanced materials and optimized structural design.

Customized Materials: The First Line of Defense

Valve Body & Disc: We specify super-austenitic stainless steel (e.g., 904L) or nickel-based alloys (e.g., Inconel, Hastelloy) for their proven resistance to pitting and sulfide stress corrosion cracking (SSCC) per ASTM G48.
Seat & Sealing Ring: We utilize multi-layer laminated seals (e.g., Duplex + Graphite) or a primary metal-to-metal seat, providing a fire-safe, high-pressure barrier. For secondary sealing, we use specially formulated FKM or HNBR for H₂S resistance, tested to API 6A.
Stem & Bearings: Stems are often made from high-strength alloys like 17-4PH or Monel K500 to handle high torque and prevent shearing. Bearings are designed to withstand extreme loads without galling.

Optimized Structural Design: Zero-Leakage Assurance

Triple Eccentric Geometry: This advanced design eliminates friction between the seat and disc, drastically reducing wear and lowering operating torque. It creates a camming action that results in a repeatable, torque-seated, zero-leakage seal.
Dual Sealing Capability: Many of our critical service valves feature a metal hard seal as the primary fire-safe barrier, with an elastic soft seal providing a secondary, independent shutoff. This redundancy achieves true zero leakage.
Pressure-Energized Sealing: The valve's design intelligently uses the pressure of the process fluid to further energize the seal, strengthening its integrity as system pressure increases and ensuring containment under all conditions.

Consult Our Engineers About Your Project

Triple Offset Butterfly Valve Lug Type - SS

25bar~360bar (2.5mpa~36.0mpa)

Triple Offset & Hard Seal : Zero-friction & bubble-tight shut-off. Hard seal for HP/HT/abrasive.

Dual Sealing : Primary RPTFE seat (Shore D 65±3) achieves API 598 <0.01 bubble/min. Secondary 316L SS + Stellite6 laser-clad, 64MPa (ASME B16.34), 10-year corrosion life.

Anti-Permeation Tech : TiO₂ plasma coating reduces CH₄ permeation to <1×10⁻⁶ cm³/cm²·s, compliant with H₂ pipeline standards.

API 609 : 750°C/30min fire test: leakage <500 cc/min, post-cooling ISO 5208 Rate A18.

Thermal Compensation : Inconel 718 spring compensates 0.15mm thermal expansion gaps, preventing HT seal failure.

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Double Flanged Triple Offset Butterfly Valve - Carbon Steel

25bar ~ 360bar (2.5mpa ~ 36.0mpa)

Triple Offset & Hard Seal : Zero-friction operation; Metal-to-metal seal for HPHT & abrasive media

Corrosion Resistance : Sa2.5 sandblasting + 3-layer marine coating (Zn primer/MIO epoxy/PU topcoat; 250-350μm); Passes 1000h ASTM B117; Optional SigmaShield

Reliable Sealing : Metal sealing + Stellite overlay; Leakproof for process efficiency

HP/HT Capability : Compatible with desalination RO/thermal stages

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