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

Valves Forged for Critical Service

We specialize in engineering butterfly valves that provide absolute reliability against the combined forces of extreme pressure, aggressive corrosion, and fire hazards.

The ChallengePressure, Corrosion & Fire Our SolutionMaterials & Structural Design Recommended ValvesFind The Right Product

Conquering the ‘Impossible Triangle’

For deep-sea oil & gas, petrochemicals, and critical infrastructure where failure is not an option.

Key Demands of Critical Service

Extreme PressureMust withstand operating pressures greater than 1000 PSI (Class 600) up to 2500 PSI (Class 1500) without leakage or structural fatigue.
Aggressive CorrosionMust resist highly corrosive media, including wet H₂S (sour gas), chlorides, and strong acids that cause rapid material degradation.
Absolute Fire SafetyMust guarantee valve integrity and containment during a fire, meeting strict API 607 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 & DiscWe 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 RingWe 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 & BearingsStems 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 GeometryThis 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 CapabilityMany 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 SealingThe 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.

Valves Engineered to Conquer the Triangle

The Triple Offset Butterfly Valve is the definitive solution for critical service applications.

Triple Offset Valve (Nickel Alloy)

The ultimate choice for the most severe corrosive environments, such as sour gas (H₂S) or concentrated acids, combined with high pressure and temperature. Body and disc constructed from Inconel, Monel, or Hastelloy.

View Nickel Alloy TOV

Triple Offset Valve in Super Austenitic Steel

Triple Offset Valve (Super Austenitic/Duplex)

An excellent solution for offshore platforms and environments with high chloride content. Materials like Duplex and Super Duplex offer a superior balance of strength, corrosion resistance, and cost-effectiveness.

View Duplex Steel TOV

Cryogenic Triple Offset Valve

When the 'impossible triangle' also includes extreme cold (-196°C), our extended bonnet cryogenic TOV ensures operational safety for applications like high-pressure LNG and liquid hydrogen.

View Cryogenic TOV

Consult Our Engineers About Your Project

Need Help with Valve Selection?

We don't only sell generic valves. We provide engineered solutions tailored to the specific operating environment of your process area.

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Triple Offset Butterfly Valve Lug Type - SS

Class150 ~ Class2500 (PN16 ~ PN400)

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

Class150 ~ Class2500 (PN16 ~ PN400)

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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