Flame Arrester (In-Line)

1. Product Overview

The In-Line Flame Arrester (Model: FDI-FA-707) is a safety-critical device engineered to stop flame propagation within pipelines carrying flammable gases or vapors. It protects upstream and downstream equipment by quenching flames before they can travel through the system, thereby reducing the risk of fire escalation or explosion.

This model is designed for medium-capacity process lines and is widely used in hazardous industrial environments.

2. Design & Configuration

• Type: In-Line Flame Arrester
• Model No.: FDI-FA-707
• Nominal Size: 2.5” (DN65)
• End Connection:
  • Flanged Type
  • Standard: ANSI B16.5
  • Pressure Class: Class 150
  • Face Type: Raised Face (RF)
• Installation: Suitable for horizontal or vertical pipeline installation (as per design guidelines)

3. Material of Construction

• Body: Stainless Steel SS304
• Flame Arresting Element: SS304 (crimped ribbon / multilayer mesh type)
• Flanges: Integral SS304, precision machined
• Fasteners (if applicable): SS304 / SS316
• Gasket Compatibility: PTFE / CAF / Spiral wound (based on service conditions)

4. Working Principle

The flame arrester functions based on flame quenching through heat dissipation:

• A flame entering the arrester encounters a high-surface-area metallic element
• The element rapidly absorbs heat from the flame front
• This reduces the flame temperature below the auto-ignition threshold
• As a result, the flame is extinguished and prevented from passing further

5. Performance Characteristics

• Protection Type: Deflagration flame arrester (low-velocity flame fronts)
• Flow Direction: Bi-directional (subject to design confirmation)
• Pressure Drop: Engineered for minimal flow restriction
• Thermal Resistance: Suitable for typical process temperatures (custom options available)
• Corrosion Resistance: Excellent resistance due to SS304 construction
• Reliability: High efficiency in preventing flame transmission

6. Standards & Compliance

• Flange Standard: ANSI B16.5 Class 150 RF
• Designed in line with industry practices for explosion protection systems
• Can be manufactured/tested in accordance with:
  • API / ISO guidelines
  • ATEX (if certified variant required)

7. Applications

• Oil & Gas Pipelines
• Petroleum Storage & Transfer Systems
• Chemical & Solvent Processing Plants
• Refineries & Petrochemical Units
• Pharmaceutical Industries
• Biogas & LNG Installations
• Fuel Handling and Vapor Lines

8. Installation Guidelines

• Install directly in-line with pipeline flanges
• Ensure proper alignment and gasket sealing
• Recommended placement:
  • Near storage tanks
  • At process unit interfaces
  • Close to potential ignition sources
• Follow manufacturer torque and tightening procedures

9. Maintenance & Inspection

• Routine inspection to ensure:
  • No clogging due to dust, carbon, or condensate
  • No corrosion or deformation of the element
• Cleaning interval depends on process contamination level
• Replace or service element if performance is compromised

10. Key Features

• Heavy-duty SS304 construction
• High-efficiency flame arresting element design
• Compact, inline installation
• Low maintenance with long service life
• Designed for hazardous area safety compliance
• Minimal pressure drop with effective flame suppression

11. Product Identification Summary