Ferrule Fittings

1. Design and Components:

   • Ferrule fittings typically consist of several components, including:
     • Ferrules: These are small, tapered rings or sleeves made of metal or plastic. They compress and form a seal around the tubing when tightened.
     • Body: The main body of the fitting, usually made of metal, where the tubing is inserted.
     • Nut: A threaded component that secures the ferrule and tubing in place by compressing the ferrule onto the tubing.
     • Fitting Body: The part of the fitting that houses the ferrule and provides the connection point for the tubing.
     • Gasket or O-ring: Often used to provide additional sealing between the fitting and the tubing.

2. Types of Ferrule Fittings:

   • Single Ferrule Fittings: Also known as "compression fittings," these use a single ferrule to seal the connection.
   • Double Ferrule Fittings: These fittings feature two ferrules - a front ferrule that seals against the fitting body and a back ferrule that provides additional support and gripping force on the tubing.
   • Three-Piece Ferrule Fittings: These fittings have an additional body component, providing enhanced stability and sealing performance.

3. Grades:

   Material	Grades
   Nickel Alloy	Nickel 200, Nickel 201, Inconel 600, Inconel 601, Inconel 625, Inconel 718, Inconel 690, Monel 400, Monel K-500, Hastelloy C22, Hastelloy C2000, Hastelloy C-276, Hastelloy B-2, Hastelloy B-3, Hastelloy X
   Incoloy	Incoloy 800/H/HT, Incoloy 825
   Zirconium	Zirconium 702, Zirconium 704, Zirconium 705
   Nitinol	Nitinol
   Titanium	Grade 1, Grade 2, Grade 5 (Ti-6Al-4V), Grade 7, Grade 9, Grade 12, Grade 23
   Stainless Steel	200, 201, 310, 310S, 304, 304L, 304H, 316, 316L, 316Ti, 317, 317L, 321, 347, 410, 430, 13-8 Mo, 15-5 PH, 17-4 PH, 17-7 PH, 440C, 446, 904L
   Ferralium	Ferralium 255
   Duplex	Duplex 2205, Duplex 2507
   Super Duplex	Super Duplex 2507
   SMO	SMO 254
   Alloy	Alloy 20
   Nimonic	Nimonic 75, Nimonic 80A, Nimonic 90
   Copper	C101, C102, C110, C122
   Tantalum	Tantalum
   Aluminium	1050, 1200, 1350, 2014A, 2017, 2024, 2214, 2219, 2618A, 3103, 5083, 5251, 6061, 6063, 6082, 6101, 7010, 7020, 7075, 7150, 7175, 7475

4. Advantages:

   • Leak Resistance: Ferrule fittings provide a secure and leak-proof connection, minimizing the risk of fluid loss or contamination.
   • Easy Installation: They are relatively easy to install and require simple tools such as wrenches or spanners.
   • Reusability: Ferrule fittings can be disassembled and reassembled multiple times without compromising their sealing integrity, making them convenient for maintenance and repairs.
   • Versatility: They are available in various sizes, materials, and configurations to suit different tubing sizes and system requirements.

5. Applications:

   • Ferrule fittings are used in a wide range of applications, including hydraulic systems, pneumatic systems, instrumentation, process control, and plumbing.
   • They are particularly well-suited for high-pressure and high-vibration environments where reliable sealing is essential.

6. Installation and Maintenance:

   • Proper installation techniques, including ensuring correct tubing insertion depth and tightening torque, are crucial for optimal sealing performance.
   • Regular inspection and maintenance help identify any signs of wear, damage, or leakage and prevent potential system failures.