Ferrules Tube Fittings

Product Details:

A Stainless Steel Ferrule Fitting is a precision tube fitting used to provide leak-tight, high-pressure connections in critical fluid and gas systems, especially in instrumentation, process control, and chemical applications.

�� What It Is:

A ferrule fitting is a type of compression fitting that connects metal tubing without welding or threading. It typically consists of:

• Body

• Nut

• Front Ferrule

• Back Ferrule

Together, these components form a mechanical grip and a gas-tight seal on the tubing.

�� Key Features: �� Applications:

• Instrumentation panels and skids

• Oil & gas processing systems

• Chemical and petrochemical plants

• Power generation and nuclear systems

• High-purity gas and vacuum systems

• Pharmaceuticals and biotech industries

✅ Advantages:

• Leak-proof performance in high-pressure and high-vibration environments

• No welding or threading required—easy to install

• Reusable—can be disassembled and reassembled

• Corrosion-resistant—especially SS316

• Consistent sealing—accommodates thermal cycling and vibration

�� Types of Ferrule Fittings: �� Example Specification:Type: 

•  Male Connector

• Tube OD: 1/4"

• Thread: 1/4" NPT Male

• Material: SS316

Additional Information:

• Packaging Details: Box Type

Product Details:

Tube Ferrule Fitting – Overview

A Tube Ferrule Fitting is a type of compression fitting used to connect or seal tubing in instrumentation, hydraulic, pneumatic, and process systems. It typically uses one or two ferrules (small ring-shaped components) to grip the tube and create a leak-tight seal.

🧩 Types of Tube Ferrule Fittings 📐 Basic Components

• Nut: Tightens over the ferrule(s) to compress them onto the tube.

• Ferrule(s): Metal rings that bite into the tube surface to form a seal.

  • Front Ferrule: Seals and grips the tube.

  • Back Ferrule (Double Ferrule fittings): Provides support and prevents damage to the tube.

• Body: Main fitting body that connects to the system (e.g., threaded, weld, or tube connections).

🔩 Working Principle

• When the nut is tightened, the ferrule(s) compress around the tube, creating a gas- and liquid-tight seal.

• The ferrule(s) bite into the tube surface without damaging it significantly, allowing for repeated assembly and disassembly.

📏 Common Applications

• Instrumentation tubing

• Hydraulic lines

• Pneumatic systems

• Chemical processing

• Gas sampling and analysis

• Process control

🔧 Materials

• Stainless Steel (SS 304, SS 316, SS 310)

• Brass (for low-pressure, non-corrosive applications)

• Alloy steel or exotic alloys (for special environments)

🏷️ Common Standards

• Tube OD compatibility: 1/16", 1/8", 1/4", 3/8", 1/2", etc.

• Threads: NPT, BSP, ISO, UNF, metric

• Industry standards: ASTM, ASME B31.3, ISO 8434-1

🛠️ Example: Double Ferrule Tube Fitting 🏢 Popular Brands

• KALPATARU

Additional Information:

• Production Capacity: 1000
• Delivery Time: READY STOCK
• Packaging Details: HPDE BOX

Product Details:

Stainless Steel Ferrule Tube Connector

An SS Ferrule Tube Connector is a precision-engineered fitting designed to connect two lengths of metal tubing securely and leak-free, using a ferrule compression mechanism. It is a key component in instrumentation, fluid handling, and high-pressure systems.

🧱 Key Features 🔧 How It Works

• Double Ferrule System:

  • Front Ferrule: Seals against the tube and the fitting body.

  • Back Ferrule: Grips the tubing for mechanical strength.

  • The nut compresses both ferrules during installation, forming a gas-tight and vibration-resistant seal.

✅ Common Types of Ferrule Tube Connectors 📄 Example Specification

SS316 Ferrule Tube Union Connector, 1/4" OD Tube x 1/4" OD Tube, Double Ferrule, 6000 psi, ASTM A479

🛠 Installation Guidelines

1. Use clean, square-cut tubing with proper deburring.

2. Insert tube fully into the fitting body until it bottoms out.

3. Tighten nut finger-tight, then apply wrench for 1-1/4 turns (initial installation).

4. Do not reuse ferrules after compression.

🏭 Common Brands

• KALPATARU

📦 Applications

• Instrumentation panels and skids

• Oil & gas refineries

• Chemical processing plants

• Gas distribution and sampling systems

• Pharma and food-grade piping

Additional Information:

• Production Capacity: 100
• Packaging Details: HPDE BOX

Product Details:

2. Components & Functions 3. Design Features

• Double Ferrule Mechanism: Provides superior sealing and grip compared to single ferrule connectors.

• Reusable: Can be disassembled and reassembled without loss of performance (if properly handled).

• Vibration Resistance: Back ferrule prevents loosening under vibration or thermal cycling.

• High Pressure Capability: Suitable for extreme pressures in oil & gas, hydraulic, and chemical systems.

4. Mechanical & Physical Properties 5. Pressure & Temperature Ratings

Ratings vary depending on tube OD, wall thickness, and manufacturer.

6. Typical Applications

• Offshore & marine pipelines

• Oil & Gas distribution lines

• Chemical & petrochemical processing

• High-pressure hydraulic systems

• Seawater systems and desalination

7. Standards 8. Common Configurations

• Elbows: 45°, 90°

• Tees

• Reducers

• Adapters: male/female, stud ends

• Crosses

• Unions

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:

Component Name

Stainless Steel Instrumentation Double Ferrule Elbow

(Also called: Double Ferrule Tube Elbow / Compression Elbow)

📐 Configuration

• Type: 90° Elbow

• Connection: Tube × Tube (Compression type)

• Ferrule Design:

  • Double ferrule system

    • Front ferrule: Creates the primary seal on the tube

    • Back ferrule: Provides tube grip and vibration resistance

🧱 Material Specifications

• Body: Stainless Steel

• Ferrules: Stainless Steel

• Nut: Stainless Steel

• Common Grades:

  • SS 316 / 316L (most common for instrumentation)

  • SS 304 (general service)

• Standards:

  • ASTM A276 / A479 (bar stock)

  • ASTM A182 (for forged components)

📏 Tube Size Range (Typical)

• Metric: 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm

• Inch: 1/8", 1/4", 3/8", 1/2", 5/8", 3/4", 1"

💪 Pressure Rating (Typical)

• Rated for high-pressure instrumentation service

• Pressure rating depends on:

  • Tube OD

  • Wall thickness

  • Material grade

• Example:

  • 1/4" SS316 tube → up to ~6000 psi (approx., manufacturer dependent)

🌡️ Temperature Range

• SS 316 / 316L:

  • −196 °C to +600 °C
    (Limited by tube material and pressure derating)

🔩 Sealing & Performance

• Leak-tight seal without flaring or welding

• Excellent resistance to:

  • Vibration

  • Thermal cycling

  • Pressure pulsation

• Re-makeable (can be disconnected and reconnected)

🛠️ Installation Notes

• Cut tube square and deburr inside & outside

• Insert tube fully into fitting body

• Hand-tighten nut, then tighten:

  • Typically 1¼ turns with wrench (manufacturer specific)

• Do not mix components from different brands

🧪 Media Compatibility

Suitable for:

• Gas & air

• Hydraulic oil

• Steam

• Chemicals

• Instrument impulse lines

🏭 Typical Applications

• Instrumentation & control systems

• Process piping

• Oil & gas

• Chemical & petrochemical plants

• Power plants

• Pharma & fine chemicals

📌 Standard Description (Example for BOQ / PO)

Elbow, 90°, Double Ferrule Compression Type, 1/4" OD × 1/4" OD, SS 316, Instrumentation Fitting

Product Details:

✅ Key Components:

Each fitting typically includes:

1. Body

2. Front Ferrule – forms the primary seal

3. Back Ferrule – grips and supports the tube

4. Nut – drives the ferrules forward during installation

🔩 Key Features:

• Material:

  • SS 316 (most common)

  • Also available in SS 304, Brass, Monel, Hastelloy, etc.

  • Conforms to ASTM A276 / A479

• Tube Sizes (OD):

  • Imperial: 1/16" to 2"

  • Metric: 3mm to 50mm

• Pressure Rating:

  • Up to 6000 PSI (varies by size/material)

• Temperature Range:

  • Up to +400°C with SS and PTFE sealing

  • Higher with special materials

• Thread Standards (for adapters):

  • NPT, BSPT, BSPP, ISO, UNF, SAE, and Metric

• Surface Finish:

  • Smooth, burr-free for proper ferrule engagement

  • Electropolished (optional for high-purity service)

📦 Common KALPATARU-Type Fitting Types: 📌 Applications:

• Oil & gas and offshore systems

• Instrumentation panels

• Pneumatic and hydraulic systems

• Chemical & petrochemical processing

• Semiconductor, pharma, and cleanroom installations

• Power generation and test benches

Product Details:

Stainless Steel Nut Ferrule Tube Fittings

Nut ferrule tube fittings are essential components in instrumentation and process control systems for connecting tubing in a leak-proof, high-pressure environment. These fittings typically include:

• A nut (used to tighten the assembly)

• A front ferrule (seals the tube)

• A back ferrule (grips the tube)

• A fitting body

They are often referred to as double ferrule compression fittings, offering secure, vibration-resistant connections without the need for welding or threading.

📌 Key Components

1. Nut: Hexagonal piece that tightens over the ferrules to create the seal

2. Front Ferrule: Forms a leak-tight seal against the tube and fitting body

3. Back Ferrule: Provides mechanical grip to hold the tube in place

4. Body: Connects the fitting to another tube or system component

📐 Technical Specifications ✅ Advantages

• Leak-proof connections even under high pressure and temperature

• Corrosion-resistant stainless steel for harsh environments

• Reusable and easy to assemble/disassemble

• No special tools required

• Excellent vibration and thermal cycling resistance

• Suitable for vacuum to high-pressure applications

🏭 Common Applications

• Instrumentation panels

• Hydraulic and pneumatic control systems

• Oil & gas refineries

• Chemical and petrochemical plants

• Power generation and steam distribution

• Pharmaceutical and biotech industries

🔩 Types of Nut Ferrule Fittings

• Tube to Male Connector

• Tube to Female Connector

• Union, Elbow, Tee, Cross

• Bulkhead fittings

• End caps and plugs

🌟 Available From

 

• Kalpataru Pipe & Fittings

•  

Additional Information:

• Packaging Details: Box

Product Details:

Components of a Double Ferrule Tube Fitting:

A typical SS (Stainless Steel) double ferrule tube fitting has four main components:

1. Nut

2. Front Ferrule

3. Back Ferrule

4. Body

🛠️ How It Works:

When the nut is tightened:

• The front ferrule grips the tube and creates a seal on the fitting body.

• The back ferrule swages (compresses) onto the tube, holding it in place securely.

This double ferrule system ensures:

• High pressure resistance

• Vibration protection

• Leak-proof sealing

🧱 Materials:

• Most commonly made from SS 316 or SS 304 stainless steel.

• Also available in brass, Monel, Hastelloy, and other alloys depending on the application.

📏 Sizes Available:

• Typically range from 1/16" to 2" in imperial sizes or 2mm to 50mm in metric.

✅ Advantages:

• Easy to install and dismantle

• Reusable without significant loss in performance

• Excellent corrosion resistance

• No need for welding or soldering

• High-pressure sealing capability

🧪 Applications:

• Instrumentation lines

• Gas lines

• Chemical and petrochemical systems

• Hydraulic and pneumatic systems

• Cryogenic and high-temperature applications

Additional Information:

• Delivery Time: READY STOCK

Product Details:

A Stainless Steel Weld Pipe Male Connector is a fitting used to connect a welded pipe end to a male-threaded port—typically found in process piping, pressure lines, instrumentation, and hydraulic systems. It provides a strong, permanent weld connection on one side and a removable threaded connection on the other, often used in high-pressure or corrosive environments.

🔧 Product Overview: SS Weld Pipe Male Connector ✅ Key Features:

• One-piece machined body for high strength and leak integrity

• Ideal for systems requiring permanent weld on one side and serviceable thread on the other

• Resistant to corrosion, pressure, and thermal cycling

• Threaded end available in NPT, BSPT, BSPP, or Metric standards

• Used in steam, gas, water, and aggressive chemical services

📐 Example Part Numbers: 🧩 Available Variants: 🏭 Applications:

 

• Instrumentation piping

• Chemical process lines

• Oil & gas field skids

• Steam and condensate systems

• Compressed air or gas manifolds

• Water treatment systems

Additional Information:

• Production Capacity: 1500
• Delivery Time: READY STOCK
• Packaging Details: Box