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Home > Product > Ferrule Fittings > Double Ferrule Fittings

PE-LOCK Double Ferrule Fittings – Superior Leak-Proof Tube Connections by Perfect Engineers

At Perfect Engineers, we are a trusted manufacturer and global supplier of high-performance Double Ferrule Tube Fittings under our premium brand PE-LOCK. These fittings are engineered to deliver leak-proof, vibration-resistant, and high-pressure performance for critical gas and fluid applications.

Ideal for instrumentation, oil & gas, petrochemicals, pharmaceuticals, and power generation, PE-LOCK Double Ferrule Fittings are known for their precision grip, secure sealing, and interchangeability with leading international brands.

Table of Contents

What Are Double Ferrule Fittings?

Double ferrule fittings consist of four main components: a body, a nut, a front ferrule, and a back ferrule. When the nut is tightened:

  • The front ferrule creates a seal between the tube and the fitting body.
  • The back ferrule grips the tube and provides mechanical hold.

This two-ferrule mechanism ensures enhanced sealing, especially in systems exposed to pressure surges, vibrations, and temperature fluctuations.

Key Features of PE-LOCK Double Ferrule Fittings

  1. Dual Ferrule System – Provides unmatched sealing and tube grip strength
  2. Leak-Proof & Gas-Tight – Ideal for critical gas or fluid service
  3. Reusable & Maintenance-Free – Can be disassembled and reassembled multiple times
  4. Vibration & Pressure Resistant – Designed for rugged and high-load systems
  5. Global Compatibility – Fully interchangeable with Swagelok®, Parker®, and others
  6. Custom Sizes & Threads Available – Metric, imperial, BSP, NPT, UNF, SAE

Type of Double Ferrule Fittings

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Straight Union

At Perfect Engineers, we manufacture and supply precision-engineered Straight Unions under our trusted brand PE-LOCK.

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Reducing Union

At Perfect Engineers, we design and manufacture high-performance Reducing Unions under our premier brand PE-LOCK. 

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Union Tee

At Perfect Engineers, we proudly manufacture high-performance Union Tee Fittings under our premium brand PE-LOCK. 

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Union Elbow

Perfect Engineers proudly presents the PE-LOCK Union Elbow – a precision-engineered tube fitting that connects two tubes at a 90-degree

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Bulkhead Union

At Perfect Engineers, we offer industrial-grade Bulkhead Unions under our flagship brand PE-LOCK

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Male Connector (NPT, BSP, BSPT, JIC)

At Perfect Engineers, we manufacture and supply a full range of precision-engineered Male Connectors under our proprietary brand PE-LOCK

Female Connector (NPT, BSP, BSPT)

Female Connector (NPT, BSP, BSPT)

At Perfect Engineers, we design and manufacture premium-grade Female Elbow Fittings under our flagship brand PE-LOCK

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Male Elbow (NPT, BSP, BSPT)

Perfect Engineers, a globally trusted manufacturer of industrial tube fittings, proudly offers the PE-LOCK Male Elbow

Female Elbow (NPT, BSP, BSPT)

Female Elbow (NPT, BSP, BSPT)

At Perfect Engineers, we design and manufacture premium-grade Female Elbow Fittings under our flagship brand PE-LOCK

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Male Branch Tee

At Perfect Engineers, we proudly manufacture Male Branch Tee Fittings under our flagship brand PE-LOCK 

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Male Run Tee

Perfect Engineers is proud to offer the PE-LOCK Male Run Tee – a critical 3-way compression fitting designed to connect

Female Branch Tee

Female Branch Tee

At Perfect Engineers, we manufacture premium-quality Female Branch Tee Fittings under our flagship brand PE-LOCK

Female Run Tee

Female Run Tee

Perfect Engineers proudly presents the PE-LOCK Female Run Tee, a high-performance, 3-way compression fitting designed to connect two tubes

Technical Specifications – PE-LOCK Double Ferrule Fittings

Specification Details
Brand PE-LOCK by Perfect Engineers
Product Name Double Ferrule Compression Tube Fittings
Connection Type Tube OD × Male/Female Thread or Tube OD × Tube OD
Available Sizes 1/8″ to 2″ (3 mm to 50 mm)
Ferrule Design Two-Piece (Front + Back Ferrule)
Material Options SS316, SS304, Brass, Monel, Inconel, Hastelloy
Pressure Rating Up to 6000 PSI
Temperature Range -196°C to +400°C
Thread Standards BSP, NPT, BSPT, UNF, ISO, SAE
Compliance Standards ISO 8434-1, DIN 2353, ASME B31.3, ASTM F1387
Manufacturing Origin India (Perfect Engineers – Mumbai facility)

Packaging & Logistics

  • Packing: Individually poly-packed + export-grade boxes with thread caps
  • Lead Time: 5–10 working days for standard sizes
  • Private Labeling: OEM branding, barcode labeling, and custom engravings supported
  • Documentation: MTC (3.1), Hydro-Test Report, Thread Gauge Verification, Dimensional Report

Contact Us for Pricing & OEM Support

Call

+91-9004860491

Website

www.perfectqrc.com

Industry Applications of PE-LOCK Double Ferrule Fittings

  1. Analytical & Process Instrumentation
  2. Oil & Gas Exploration and Refining
  3. Hydraulic & Pneumatic Systems
  4. Pharma and Biotech Fluid Handling
  5. Water Treatment & Filtration Plants
  6. Aerospace & Defense Fluid Networks
  7. Food & Beverage Process Lines
  8. Food & Beverage Clean-In-Place Systems
  9. Fire Suppression and Safety Systems

Why Choose PE-LOCK Double Ferrule Fittings from Perfect Engineers?

  • ISO 9001:2015 Certified Facility – Quality backed by global standards
  • Leak- & Pressure-Tested – Every fitting passes 100% quality inspection
  • CNC Precision Machining – Guaranteed dimensional integrity
  • Worldwide Export Support – 40+ countries served regularly
  • Custom Engineering Available – Unique designs, sizes, and materials supported
  • Swagelok®/Parker® Interchangeability – Zero modification required

Types of PE-LOCK Double Ferrule Fittings

  • Straight Connectors (Tube × Tube or Tube × Threaded)
  • Elbows (90° / 45°) – Male, Female, Tube-to-Tube
  • Tees (Run / Branch / Equal / Reducing)
  • Bulkhead Unions and Adapters
  • Cross Fittings
  • Reducers, Caps, Plugs, Ferrules, and Nuts
  • Tube Adapters (Male/Female/Weld/Flange)

All fittings are compatible with metric and imperial tube sizes and available in custom configurations upon request.

Frequently Asked Questions (FAQs)

Yes. PE-LOCK Double Ferrule Fittings are fully interchangeable and dimensionally matched.

Yes. They are designed for multiple reassemblies without performance degradation.

Oil & gas, pharma, chemical, aerospace, food processing, and power generation.

Absolutely. We offer Monel, Inconel, Hastelloy, and other alloys based on application needs.

Yes. We support both mm and inch sizing for global compatibility.

Yes. They are suitable for high-purity gas, high-pressure, and hazardous fluid systems.

Up to 6000 PSI, depending on the tube size and material.

Yes. OEM branding and global shipping are our specialties.

Yes. Every fitting undergoes 100% pressure and leak testing.

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We serve purchase heads, OEMs, and end-users with tailored PE-LOCK Double Ferrule Fittings – Superior Leak-Proof Tube Connections by Perfect Engineers recommendations and commercial pricing.