Inconel 625 (UNS N06625 / CW6MC) Butterfly Valves

Falcon High-Performance Inconel 625 (UNS N06625 / CW6MC) Butterfly Valves

At Falcon, we engineer and manufacture industrial-grade Inconel 625 Butterfly Valves designed for zero-leakage quarter-turn isolation, high-velocity flow control, and extreme thermal resilience in severe offshore, marine, and chemical environments. Cast in high-purity ASTM A494 Grade CW6MC (Cast Inconel 625) and forged from ASTM B564 / B446 UNS N06625, our Inconel 625 valves deliver an extraordinary combination of high mechanical strength, immunity to chloride stress-corrosion cracking, and exceptional oxidation resistance from cryogenic temperatures up to +1000 ∘ C (1832 ∘ F).

Why Choose Falcon Inconel 625 Butterfly Valves?

• Extreme Thermal & Oxidation Resistance: Solid solid-solution strengthened nickel-chromium-molybdenum matrix preserves high tensile and creep-rupture strength without degradation across extreme thermal cycles up to +1000C.

• Superior Pitting & Crevice Corrosion Protection: High molybdenum (∼9%) and niobium (∼3.5%) content provides a high Pitting Resistance Equivalent Number (PREN≥45), guaranteeing immunity to localized pitting and crevice corrosion in hot seawater and halide-rich media.

• Immunity to Stress-Corrosion Cracking (SCC): High nickel content (> 58%) provides absolute immunity to chloride-induced stress corrosion cracking in aggressive marine and sour gas (H2S) process streams.

• Low Operating Torque & Long Cycle Lifespan: Precision-ground Inconel 718 / 625 shafts and polished disc contours lower friction across seating faces, extending seal durability and minimizing actuator size requirements.

• Bi-Directional Zero-Leakage Performance: Available in double-offset and triple-offset metal-seated configurations engineered to deliver certified ISO 5208 Rate A / API 598 bubble-tight shut-off.

Butterfly Valve Configurations Offered

• Double-Offset (High-Performance) Inconel 625 Butterfly Valves:

  • Design: Eccentric shaft position lifts the disc away from the seat during initial rotation, reducing seat friction and wear.

  • Best For: Medium-pressure marine cooling lines, high-cycle chemical feeds, and offshore utilities.

• Triple-Offset (Bi-Directional Zero-Leakage) Inconel 625 Butterfly Valves:

  • Design: Non-rubbing, angled conical seating geometry with an Inconel 625 / graphite laminated seal ring for zero-leakage performance under extreme thermal expansion.

  • Best For: High-temperature hydrocarbon processing, sour gas ($H_2S$) containment, firewater deluge loops, and flue gas scrubbers.

Primary Applications

 

• Offshore Oil & Gas (FPSO & Subsea): Topside seawater injection, produced water handling, firewater deluge mains, and subsea manifold systems.

• Chemical & Severe Petrochemicals: Handling mixed organic/inorganic acids, wet chloride gases, phosphoric acid production, and solvent recovery.

• Flue Gas Desulfurization (FGD) & Power Plants: Absorber tower isolation, severe acid mist scrubbers, and high-temperature exhaust gas dampers.

• Aerospace & Thermal Processing: Waste heat recovery units, high-temperature furnace atmosphere lines, and flare gas systems.

Quality Assurance & Testing Standards

 

Every Falcon Inconel 625 Butterfly Valve undergoes comprehensive metallurgical and non-destructive examination before shipment:

• 100% Positive Material Identification (PMI)
• NACE Compliance Verification
• Hydrostatic Shell & Bi-Directional Seat Testing per API 598 and ISO 5208.
• Non-Destructive Examination (NDE)
• EN 10204 Type 3.1 & Type 3.2 Material Test Reports (MTRs)

Request a Quote or Technical Support

Protect your critical process systems against severe chemical attack and extreme temperatures with Falcon Inconel 625 Butterfly Valves. Whether you require standard off-the-shelf sizes or custom automated valve packages, our technical specialists are ready to review your project requirements.

Contact Falcon Today to consult with an application engineer or request a fast, competitive quote for your upcoming project.