Double Ferrule Tube Fittings

Product Details:

Double ferrules come with a front ferrule that compresses into the fitting body and a smaller, freely rotating back ferrule that can easily decouple the nut from the front ferrule. The chemically hardened front edge of the back ferrule can bite down and grip the softer metal of the tubing.

Product Details:

Stainless Steel Double Ferrule Compression Fittings – Overview 🧩 What Is a Double Ferrule Fitting?

Double ferrule compression fittings consist of four main components:

1. Body – the main housing

2. Front Ferrule – bites into the tubing to create a seal

3. Back Ferrule – clamps the tube and provides holding power

4. Nut – tightens the ferrules and compresses them to form the seal

🔄 These are mechanically sealed fittings — no welding or soldering is needed.

🔗 Common Types of Double Ferrule Fittings ✅ Key Features

• Leak-proof connections under high pressure & vibration

• Reusable – can be assembled/disassembled multiple times

• Superior corrosion resistance (especially SS316)

• Easy, clean installation without special tools

• Compatible with systems from KALPATARU

📌 Applications

• Instrumentation lines

• Hydraulic & pneumatic systems

• Gas distribution (e.g., oxygen, nitrogen, hydrogen)

• Chemical processing

• Oil & gas and offshore rigs

• Pharmaceutical and food-grade lines

Product Details:

🔩 Types of Stainless Steel Pipe & Tube Fittings 1. Elbows

• Purpose: Change the direction of flow

• Common Angles: 45°, 90°, 180°

• Variants: Long radius (LR), short radius (SR)

2. Tees

• Purpose: Combine or split flow

• Types:

  • Equal tee (same branch size)

  • Reducing tee (branch smaller than run)

3. Reducers

• Purpose: Connect pipes of different diameters

• Types:

  • Concentric (centerlines match)

  • Eccentric (offset centerlines)

4. Couplings

• Purpose: Connect two pipes

• Types:

  • Full coupling

  • Half coupling

  • Reducing coupling

5. Unions

• Similar to couplings but can be easily removed and reassembled

6. Caps & Plugs

• Purpose: Close the end of a pipe

7. Flanges

• Purpose: Connect pipes, valves, pumps using bolts

• Types:

  • Weld neck

  • Slip-on

  • Blind

  • Socket weld

  • Threaded

8. Adapters

• Connect dissimilar pipe systems (e.g., NPT to BSP)

9. Ferrule & Compression Fittings

• Common in instrumentation and precision applications

• Allow for leak-free sealing without welding

🔧 Grades of Stainless Steel Used 📏 Standards and Specifications

• ASTM A403 – For stainless steel pipe fittings

• ASME B16.9 – Factory-made wrought fittings

• ASME B16.11 – Forged fittings (socket-weld and threaded)

• DIN, JIS, ISO – International standards

⚙️ Common Applications

• Industrial piping systems

• Sanitary systems

• Hydraulic & pneumatic lines

• Instrumentation tubing

• Exhaust systems

Product Details:

^{KALPATARU  compression tube fittings are double ferrule-type fittings  which provide} 

^{leak-proof, torque-free seals at the tubing connection.}

^{They provide  safety and  eliminate hazardous leaks of fluids in the} 

^{instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems}

 

 

Product Details:

Monel Double Ferrule Compression Tube Fittings 1. Product Description
Monel double ferrule compression fittings consist of a body, nut, and two ferrules (front and back) that compress onto tubing to create a strong, leak-tight mechanical seal. The double ferrule design ensures excellent grip and sealing, preventing leaks even under high pressure or vibration.
2. Material Details MaterialMonel (Typically Monel 400)CompositionNickel-Copper alloy (approx. 67% Ni, 28-30% Cu)Corrosion ResistanceOutstanding resistance to seawater, acids, alkalis, and saltwater environmentsMechanical PropertiesHigh strength and durabilityTemperature RangeSuitable for use up to ~400°C (varies by application)3. Design Features FeatureDescriptionTypeDouble ferrule compression fittingConnectionMechanical seal by compressing ferrules onto tubingTube CompatibilitySuitable for metal tubing (Monel, stainless steel, copper, etc.)Pressure RatingTypically up to 6000 psi (varies by size and standard)StandardsOften conforms to DIN 2353, ISO 8434-1, or customer specsFinishMachined and polished for smooth sealing surfaces4. Sizes Available

Tube Outer Diameter: Typically from 1/8” to 2” (3 mm to 50 mm)

Custom sizes available upon request

5. Applications

Marine and offshore industries (due to excellent seawater resistance)

Chemical processing plants handling corrosive fluids

Nuclear and aerospace applications

Instrumentation and control lines in harsh environments

Oil and gas industry tubing systems

6. Advantages

Superior corrosion resistance in aggressive environments

Reliable, leak-proof seal without welding or brazing

Easy to install and maintain

High strength suitable for high pressure and vibration conditions

Compatible with various tubing materials

7. Ordering Example Product: Monel 400 Double Ferrule Compression Tube Fitting Tube Size: 1/2” OD Material: Monel 400 Pressure Rating: 6000 psi Finish: Machined and Polished Standards: DIN 2353 / ISO 8434-1

Product Details:

Basic Info: 1/4" OD SS Double Ferrule Fittings 🔩 Common Types of 1/4" OD Double Ferrule Fittings ✅ Key Features

• Leak-proof connections without welding

• Easy installation and disassembly

• Reusable ferrules

• Suitable for high-purity applications

• Compatible with brands like Swagelok®, Kalpataru

🛠️ Applications

• Instrumentation panels

• Hydraulic and pneumatic systems

• Gas and liquid chromatography

• Oil & gas lines

• Laboratory setups

Product Details:

Carbon Steel Instrumentation Tube Fittings

Definition:

• These fittings are designed to join, disconnect, and control fluid flow in instrumentation systems, which monitor and measure pressure, temperature, and other parameters.

Material:

• Carbon Steel: Typically made from grades like A106 or A53, carbon steel offers a good balance of strength, ductility, and affordability. It’s suitable for a variety of environments, although it may require protective coatings to prevent corrosion.

Key Features:

• Types of Fittings: Common types include elbows, tees, reducers, couplings, and adapters, all designed to accommodate different tube sizes and configurations.
• Pressure Ratings: Instrumentation fittings are often designed to handle high-pressure applications, ensuring reliability in demanding environments.

Applications:

• Oil and Gas: Used in upstream and downstream processes for fluid transport and monitoring.
• Chemical Processing: Commonly found in systems that handle various chemicals and require precise control of flow and pressure.
• Power Generation: Used in power plants for instrumentation and control applications.

Benefits:

• Durability: Carbon steel fittings provide strong connections that can withstand high pressures and mechanical stresses.
• Cost-Effective: Generally more affordable than stainless steel or other high-alloy fittings, making them a popular choice for many applications.
• Versatile: Suitable for a wide range of temperatures and pressures.

Considerations:

• Corrosion Resistance: While carbon steel is strong, it may corrode if exposed to moisture or aggressive chemicals. Protective coatings or galvanization may be necessary.
• Compatibility: Ensure that the fittings are compatible with the tubing and the fluids being transported to prevent leaks or failures.

Installation Tips:

• Proper Torque: Use appropriate torque specifications when tightening fittings to avoid leaks and damage.
• Sealants: Consider using thread sealants or PTFE tape for threaded connections to enhance leak prevention.
• Inspection: Regularly inspect fittings for signs of wear or corrosion, especially in critical applications.

Additional Information:

• Production Capacity: 1000
• Delivery Time: 10 DAYS

Product Details:

^{KALPATARU  compression tube fittings are double ferrule-type fittings  which provide} 

^{leak-proof, torque-free seals at the tubing connection.}

^{They provide  safety and  eliminate hazardous leaks of fluids in the} 

^{instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems}

 

 

Product Details:

^{KALPATARU  compression tube fittings are double ferrule-type fittings  which provide} 

^{leak-proof, torque-free seals at the tubing connection.}

^{They provide  safety and  eliminate hazardous leaks of fluids in the} 

^{instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems}

 

 

Product Details:

ChatGPT said:🔩 Stainless Steel Ferrule Nut

A stainless steel ferrule nut is a critical component of a compression tube fitting system, typically used in high-pressure instrumentation and process piping applications. It secures the ferrules (front and back) onto the tubing, ensuring a tight, leak-free seal between the tube and the fitting body.

📌 Function of a Ferrule Nut

In a double ferrule fitting, the nut:

• Tightens against the body of the fitting

• Drives the front ferrule to create a seal on the tubing and fitting

• Pushes the back ferrule to grip the tubing for mechanical hold

The ferrule nut ensures both sealing and retention of the tubing under pressure, temperature changes, and vibration.

🛠️ Key Features

• Material: Typically made from SS316 or SS316L for corrosion resistance and strength

• Thread Types: NPT, BSPT, BSPP, ISO, metric threads

• Size Range: 1/16” to 2” (or 3mm to 50mm)

• Reusable: Can often be retightened or reassembled without damage

• Corrosion Resistance: Excellent in marine, chemical, and high-purity environments

📐 Common Specifications ✅ Advantages

• High-pressure, leak-tight performance

• Resistant to corrosion, wear, and temperature extremes

• Compatible with a wide range of ferrule and body materials

• Supports frequent maintenance or system reconfiguration

🏭 Applications

• Instrumentation and control systems

• Chemical and petrochemical pipelines

• Hydraulic and pneumatic systems

• Gas distribution manifolds

• Semiconductor and pharmaceutical equipment

Additional Information:

• Production Capacity: 10000
• Packaging Details: box

Product Details:

       KPF compression tube fittings are double ferrule-type fittings  which provide 
leak-proof, torque-free seals at the tubing connection.
They provide safety and eliminate hazardous leaks of fluids in the 
Instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems
 
Types
Tube to Union, Tube to  Male, Tube to Female, Instrument Pipe Fittings, Accessories
Equivalent To
SWAGELOK, PARKER, DK-LOK, HOKE
Grade
SS304 & SS316
Sizes
1/8'' to 2'' and 3mm to 50mm
Ends
Threaded, Welding, JIC
Pressure Rating
1000 Psi, 3000 Psi, 6000 Psi, and 10000 Psi
Threads
NPT, BSPT, and BSP
HS CODE
73072900

Additional Information:

• Production Capacity: 25000 PIECE
• Delivery Time: READY STOCK
• Packaging Details: BOX TYPE

Product Details:

Stainless steel tube fitting  Male connector
Available in stainless steel 304 & 316 and other as per client requirement

Additional Information:

• Production Capacity: 200 PIECE PER DAY
• Delivery Time: READY STOCK
• Packaging Details: HDPE BOX | Corrugated Box | Wooden Box

Product Details:

We are engaged in offering a wide range of KALPATARU PIPE Fittings to our clients. Our range of all products is widely appreciated by our clients.

Additional Information:

• Item Code: KP-12.7
• Production Capacity: 1000 PIECE
• Delivery Time: READY STOCK
• Packaging Details: BOX TYPE

Product Details:

Stainless steel Male Connector
Size 1/2" 
NPT M
We are a leading Manufacturer, Stockist & Supplier of Stainless Steel Double Ferrule Instrumentation Tube Fittings, Valves & Pressure Gauge Accessories In India. We also Offer Ready Stock of Stainless Steel Instrumentation Tube Fittings In various sizes.
These above products are available in the following Material & Grades:
Stainless Steel Grades: 304 | 304L | 316 | 316L

Additional Information:

• Production Capacity: 100000 PIC
• Delivery Time: 730729
• Packaging Details: HDPE BOX | Corrugated Box | Wooden Box

Product Details:

Instrumentation tube fittings are used to quickly and easily produce leak-free tube connections. Double ferrule compression fittings are available in metric and fractional tube sizes and include: An exterior nut. Two deformable ferrules in soft alloy or non-ferrous metals. A tube fitting body.

Additional Information:

• Packaging Details: BOX TYOE

Product Details:

^{KALPATARU  compression tube fittings are double ferrule-type fittings  which provide} 

^{leak-proof, torque-free seals at the tubing connection.}

^{They provide  safety and  eliminate hazardous leaks of fluids in the} 

^{instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems}

 

 

Product Details:

^{KALPATARU  compression tube fittings are double ferrule-type fittings  which provide} 

^{leak-proof, torque-free seals at the tubing connection.}

^{They provide  safety and  eliminate hazardous leaks of fluids in the} 

^{instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems}

 

 

Product Details:

Stainless steel 304 forged fittings are essential components in piping systems, offering robust connections and excellent corrosion resistance. Here’s an overview of their features, applications, and benefits:

Key Features:

1. Material:

   • Stainless Steel 304: This grade is known for its good corrosion resistance, durability, and formability. It’s suitable for a wide range of environments, particularly where moderate corrosion resistance is required.

2. Forged Construction:

   • These fittings are made by forging, which involves shaping the metal under high pressure. This process enhances the strength and integrity of the fittings, making them less prone to cracking or breaking.

3. Variety of Types:

   • Common types of forged fittings include elbows, tees, reducers, caps, and unions. These can be tailored to various pipe sizes and specifications.

Applications:

• Oil and Gas: Widely used in pipelines and refineries due to their durability and resistance to harsh environments.
• Chemical Processing: Suitable for transporting chemicals, where corrosion resistance is crucial.
• Food and Beverage: Often utilized in sanitary applications where hygiene and cleanliness are important.
• Marine Applications: Effective in preventing rust and corrosion in salty environments.

Benefits:

• Strength: Forged fittings offer superior strength compared to cast fittings, making them ideal for high-pressure applications.
• Corrosion Resistance: Stainless steel 304 provides a good balance of corrosion resistance, making these fittings suitable for many industrial applications.
• Versatility: Available in various sizes and configurations, allowing for flexibility in design and installation.
• Long Lifespan: Their durability contributes to a longer service life, reducing the need for frequent replacements.

Installation and Maintenance:

• Installation: Proper techniques should be used to ensure tight seals and proper alignment. Threaded or welded connections are common, depending on the fitting type.
• Maintenance: Regular inspections for signs of wear or corrosion are advisable, especially in corrosive environments. Clean as necessary to maintain performance.

Additional Information:

• Delivery Time: READY STOCK

Product Details:

Size
1/8"OD TO 2" OD | 3MM OD TO 50.8 MM OD / NPT, BSP, BSPT & JIC
Material
Stainless Steel
Type of Tee
Equal Tee
Usage/Application
Gas Line | Oil & Gas | Instrumentation | Petrochemical
Packaging
HDPE BOX | Corrugated Box | Wooden Box
Country of Origin
Made in India

We are a leading Manufacturer, Stockist & Supplier of Stainless Steel Double Ferrule Instrumentation Tube Fittings, Valves & Pressure Gauge Accessories In India. We also Offer Ready Stock of Stainless Steel Instrumentation Tube Fittings In various sizes.
These above products are available in the following Material & Grades:
Stainless Steel Grades: 304 | 304L | 316 | 316L 

Additional Information:

• Production Capacity: 1000 PIECE
• Delivery Time: READY STOCK
• Packaging Details: BOX PECKING 100 PIECE

Product Details:

Material ComponentMaterialFunctionBodyStainless Steel 304 / 316Corrosion resistance and structural strengthNutStainless Steel 304 / 316Compresses ferrules or secures threaded connectionFerrule (if compression type)Stainless SteelSeals and grips tubingWasher / Gasket (optional)PTFE / SSProvides leak-tight sealing across panel
Material Properties:

Excellent resistance to corrosion, rust, and chemicals

High mechanical strength suitable for high-pressure lines

SS316: Better for aggressive chemical environments

3️⃣ Connection Types

Threaded Bulkhead Union:

Male/female NPT or BSP threads on each end

Passes through panel via bulkhead nut

Compression Bulkhead Union (Double Ferrule):

Tubing inserted on each side

Nuts compress ferrules for leak-proof seal

Key Function: Allows secure connection through walls, panels, or partitions in piping or instrumentation lines.
4️⃣ Typical Sizes ParameterRangeTube / Pipe OD1/16″ – 1″ (common instrumentation sizes)Thread1/8″ – 1″ NPT / BSPTPanel Thickness1 mm – 10 mm (typical; may vary per manufacturer)Nut SizeMatches tube OD or panel thickness for proper compression5️⃣ Pressure & Temperature Ratings ParameterRangeWorking PressureUp to 6000 psi (depending on tube OD & fitting type)Temperature Range−50 °C to 450 °C (SS304), higher for SS316 / 316L
Note: Compression type may have slightly higher leak resistance for instrumentation lines.
6️⃣ Standards / Compliance AspectStandardMaterialASTM A182 / ASTM A403ThreadingASME B1.20.1 (NPT), BSPTFitting DimensionsASME B16.11 (for threaded forged fittings)Ferrule DesignISO 8434-1 (if compression type)7️⃣ Advantages

Allows secure connection through walls or panels without welding

Leak-tight and strong, suitable for high-pressure lines

Corrosion-resistant stainless steel construction

Reusable (especially compression type)

Easy to install and maintain

Suitable for instrumentation, chemical, hydraulic, or process piping

8️⃣ Typical Applications

Pressure transmitters, DP cells, and instrumentation lines passing through panels

Hydraulic or pneumatic control panels

Chemical and petrochemical plants

Laboratory and analytical equipment

High-pressure piping requiring partition crossing

9️⃣ Installation Notes

Drill or provide a hole in the panel matching the union body diameter

Insert fitting through panel

Secure with bulkhead nut

For compression type: insert tubing and tighten nuts to compress ferrules

Check alignment and leak-tightness

Optional: Pressure test after installation

Product Details:

1️⃣ Product Description

A Super Duplex Double Ferrule Reducing Tee is a three-port instrumentation tube fitting used to connect two different tube sizes in a T-configuration.
It features a double ferrule design (front ferrule + back ferrule) that ensures leak-tight sealing, strong tube grip, and high resistance to vibration, making it ideal for high-pressure and corrosive environments.

2️⃣ Material Specification

• Material: Super Duplex Stainless Steel

• Common Grade: UNS S32750 / S32760

• Standards: ASTM A182 / ASTM A479 (as applicable)

Typical Chemical Composition (% – S32750)

• Chromium (Cr): ~24–26

• Nickel (Ni): ~6–8

• Molybdenum (Mo): ~3–5

• Nitrogen (N): ~0.24–0.32

PREN Value: ≥ 40 (Excellent pitting resistance)

3️⃣ Double Ferrule Design

• Front Ferrule

  • Creates primary metal-to-metal seal

  • Prevents leakage under high pressure

• Back Ferrule

  • Provides strong tube grip

  • Prevents tube pull-out

  • Enhances vibration resistance

Supports multiple make-and-remake cycles.

4️⃣ Configuration

• Type: Reducing Union Tee

• Connections: Tube × Tube × Tube

• Branch: Reduced size

• Angle: 90° branch

5️⃣ Tube Size Range

Run Ports (Same Size):

• 1/4", 3/8", 1/2", 3/4"

• Metric: 6 mm, 8 mm, 10 mm, 12 mm, 16 mm

Branch Port (Reduced Size):

• 1/8", 1/4", 3/8"

• Metric: 6 mm, 8 mm, 10 mm

(Custom size combinations available)

6️⃣ Technical Parameters (Typical) 7️⃣ Key Features

✔ Very high strength vs austenitic SS
✔ Excellent resistance to chloride stress corrosion cracking
✔ Superior pitting and crevice corrosion resistance
✔ Leak-tight, reusable connection
✔ Suitable for offshore and marine service

Product Details:

Stainless Steel Female Branch Tee

A Stainless Steel Female Branch Tee is a T-shaped pipe fitting used to connect three pipe sections, with all or specific ends having female threads (internal threads). It allows fluid or gas to branch off from a main line at a 90-degree angle and is ideal for threaded piping systems in medium to high-pressure environments.

🔩 Key Specifications:

• Material:

  • Stainless Steel 304 or 316 / 316L

  • Grade 316 offers better corrosion resistance in chemical, marine, or high-salinity environments

  • Manufactured in compliance with ASTM A182 or ASTM A351

• Design Options:

  • All Female Tee: All 3 ends have female threads

  • Female Branch Tee:

    • Run (straight path): Female × Female

    • Branch (90° outlet): Female

    • Shape: "T" with all connections at 90 degrees

• Thread Type:

  • NPT (National Pipe Thread) – most common

  • Also available in BSPT, BSPP, or ISO threads on request

  • Threads conform to ASME B1.20.1 or ISO 7/1

• Size Range:

  • Nominal Pipe Sizes (NPS): 1/8” to 2”

  • Custom sizes available on request

• Pressure Rating:

  • Typically rated for Class 3000 or 6000 PSI (threaded forged fittings)

  • Dependent on size and material grade

📌 Applications:

• Instrumentation and process piping

• Oil & gas pipelines

• Chemical and petrochemical industries

• Water treatment systems

• Compressed air or hydraulic lines

• HVAC and plant utilities

Product Details:

 KALPATARU ^{compression tube fittings are double ferrule-type fittings  which provide 
leak-proof, torque-free seals at the tubing connection.
They provide  safety and  eliminate hazardous leaks of fluids in the 
instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems
 
Types
Tube to Union, Tube to  Male, Tube to Female, Instrument Pipe Fittings, Accessories
Equivalent To
SWAGELOK, PARKER, DK-LOK, HOKE
Grade
SS304 & SS316
Sizes
1/8’’ to 2’’ and 3mm to 50mm
Ends
Threaded, Welding, JIC
Pressure Rating
1000 Psi, 3000 Psi, 6000 Psi, and 10000 Psi
Threads
NPT, BSPT, and BSP
HS CODE
73072900}

Additional Information:

• Delivery Time: READY STOCK
• Packaging Details: WOODEN BOX, HPDE BOX

Product Details:

Material:

SS316 offers superior corrosion resistance, especially in chloride-rich or marine environments, compared to SS304.

📐 Available Sizes:

Example: 1/2" NPT Male × Male × Male

⚙️ Key Features:

• Three male threaded connections — ideal for branching pipe runs

• Handles high pressure in air, water, oil, steam, and gas systems

• Precision-machined threads for tight seal

• Suitable for above-ground and corrosive environments

• Reusable and easy to assemble/disassemble

• Compliant with ASME B16.11 and ISO thread standards (if applicable)

📋 Typical Specifications: 🛠️ Applications:

• Oil & gas pipelines

• Chemical & petrochemical processing

• Steam and water lines

• Compressed air systems

• Hydraulic and pneumatic circuits

• Instrumentation hook-ups

🔩 SS304 vs SS316 Male Tee: 📎 Example: 1/2" SS316 Male Tee

Additional Information:

• Production Capacity: 100000
• Delivery Time: READY STOCK
• Packaging Details: HPDE BOX

Product Details: