Inconel 617 Knife Gate Valves

Falcon Inconel 617 Knife Gate Valves

Advanced Thermal Stability & High-Temperature Oxidation Resistance

Falcon Inconel 617 Knife Gate Valves are engineered for the most extreme thermal environments in the industrial world. Utilizing Alloy 617 (UNS N06617)—a nickel-chromium-cobalt-molybdenum alloy—these valves are designed to maintain mechanical integrity and resist deformation at temperatures where standard stainless steels and even other nickel alloys would lose their structural shape.

1. The Inconel 617 Advantage

The addition of Cobalt and Molybdenum provides Inconel 617 with a unique set of properties:

• High-Temperature Strength: Exceptional resistance to "creep" (deformation under constant stress) at temperatures exceeding $980^{\circ}\text{C}$ ($1800^{\circ}\text{F}$).

• Oxidation Resistance: The high chromium and aluminum content forms a protective scales that resists oxidation and carburization in high-heat cycles.

• Corrosion Resistance: Highly effective in a wide range of gaseous oxidizing and reducing environments.

• Metallurgical Stability: Remains stable during long-term exposure to high heat, preventing the valve components from becoming brittle.

2. Specialized High-Heat Design Features

• Thermal Expansion Engineering: The body and gate clearances are precision-calculated to allow for thermal expansion without seizing, ensuring the valve operates smoothly at both ambient and peak process temperatures.

• Solid Alloy Construction: Falcon uses solid Inconel 617 for the gate and critical seating areas to ensure uniform thermal performance.

• High-Temp Packing & Sealing: Outfitted with specialized graphite-based or metallic-reinforced packing systems rated for extreme thermal service.

• Heavy-Duty Bolting: Utilizes compatible high-strength fasteners to prevent "thread galling" or loosening during extreme temperature fluctuations.

3. Technical Specifications

Parameter	Specification Details
Material Grade	Inconel 617 (ASTM B166 / UNS N06617)
Primary Elements	Nickel (52%), Chromium (22%), Cobalt (12%), Molybdenum (9%)
Temperature Limit	Up to $1100^{\circ}\text{C}$ ($2000^{\circ}\text{F}$)
Pressure Class	ASME B16.34 Class 150, 300, and 600
Standard Testing	API 598 (High-Pressure Shell & Seat)
End Connections	Flanged, Buttweld, or Lugged

4. High-Stakes Industrial Applications

Falcon Inconel 617 valves are typically specified for:

• Power Generation: High-temperature components in ultra-supercritical coal plants and gas turbine exhaust systems.

• Petrochemical Catalysts: Handling hot, abrasive catalyst slurries in FCC (Fluid Catalytic Cracking) units.

• Aerospace & Defense: Ground support equipment and test stands for rocket and jet engine components.

• Thermal Processing: Industrial furnaces, heat-treating muffles, and high-temperature chemical reactors.

• Hydrogen Production: High-temperature steam reforming processes.

Quality & Precision Testing

Because Inconel 617 is often used in safety-critical high-heat zones, Falcon provides:

1. High-Temperature Simulation Testing: Verification of valve torque and sealing at elevated temperatures.

2. Full Chemical Analysis: PMI testing to ensure the critical 12% Cobalt content is present for high-temp strength.

3. Ultrasonic Testing (UT): Conducted on the body and gate to ensure zero internal defects or inclusions in the alloy.

4. Creep Testing Documentation: Available upon request to verify the material's long-term performance under stress.

Technical Comparison: Inconel 625 vs. Inconel 617

Selecting the correct grade ensures that the valve does not suffer from either Corrosion (failure of 617 in acid) or Creep (structural sagging of 625 in extreme heat).

1. Primary Design Intent

Feature	Inconel 625 (The Corrosion Guard)	Inconel 617 (The Heat Titan)
Main Alloying Elements	Nickel + Chromium + Niobium	Nickel + Chromium + Cobalt
Primary Strength	Resistance to pitting and acids.	Resistance to "Creep" and sagging at heat.