Inconel 625 (UNS N06625 / CW6MC) Ball Valves

At Falcon, we engineer and manufacture industrial-grade Inconel 625 Ball Valves designed for zero-leakage quarter-turn isolation, high-pressure flow control, and maximum corrosion resistance in the world’s most hyper-aggressive marine, offshore, and chemical processing environments. Cast in high-purity ASTM A494 Grade CW6MC (Cast Inconel 625) and forged from ASTM B564 / B446 UNS N06625, our Inconel 625 ball valves deliver an extreme PREN≥45, complete immunity to chloride stress-corrosion cracking (SCC), and exceptional structural integrity from cryogenic conditions down to −196 ∘C up to extreme thermal service at +1000 ∘C.

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

• Immunity to Stress-Corrosion Cracking (SCC): High nickel matrix (>58%) provides 100% protection against chloride-induced stress corrosion cracking and sulfide stress cracking (SSC) in sour gas (H2S) process streams.

• Exceptional Thermal & Mechanical Strength: Solid solution-strengthening preserves high tensile yield strength and creep-rupture performance without thermal scaling or structural degradation under high differential pressures and severe thermal shock.

• Certified Bi-Directional Zero-Leakage: Precision-ground Inconel 625 balls paired with advanced soft seats (PTFE/RTFE/Devlon/PEEK) or metal-to-metal seating ensure certified API 598 / ISO 5208 Rate A / API 6D bubble-tight shut-off.

• Anti-Blowout Stem & Low Operating Torque: Precision-machined stems—available in precipitation-hardened Inconel 718 (UNS N07718)—guarantee blowout safety, low actuation torque, and high cycle frequencies.

• 2-Piece & 3-Piece Floating Inconel 625 Ball Valves:

  • Design: Compact quarter-turn floating ball geometry where line pressure seals the ball downstream against the seat face.

  • Best For: Medium-pressure severe chemical feeds, active halide lines, and skid-mounted utility loops up to Class 300 (1/2" to 4").

• Trunnion-Mounted Inconel 625 Ball Valves:

  • Design: Fixed ball supported by upper and lower trunnion bearings with spring-loaded, self-relieving seats for smooth operation under high differential pressures.

  • Best For: High-pressure oil & gas pipelines, subsea manifolds, sour gas (H2S) gathering, and high-velocity offshore systems Class 150 to 2500 (2" to 24").

• Metal-Seated Inconel 625 Ball Valves:

• Design: Precision-lapped Inconel 625 ball and seat rings hard-faced with Stellite 6 or Tungsten Carbide coatings for frictionless operation under extreme temperatures and abrasive slurries.

• Best For: High-temperature catalyst handling, flue gas scrubbers, waste heat recovery, and severe slurry streams exceeding soft-seat limits.

• Primary Industrial Applications

• Offshore Oil & Gas (FPSO & Subsea): Topside seawater injection manifolds, produced water treatment skids, firewater deluge systems, and subsea isolation valves.

• Sour Oil & Gas (H2S / CO2): Downhole sour gas piping, high-pressure gas gathering lines, and sour crude refining in compliance with NACE MR0175 / ISO 15156.

• Chemical & Petrochemical Processing: Handling mixed organic/inorganic acids, wet chloride gases, phosphoric acid manufacturing, and solvent recovery loops.

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

• Request a Quote or Technical Support

  Protect your critical process lines against severe chemical attack, extreme pressures, and high temperatures with Falcon Inconel 625 Ball Valves.Contact Falcon Today to speak with a technical sales engineer or request quote for your upcoming project.