1. Product Overview

The In-Line Flame Arrester (Model: FDI-FA-707) is a precision-engineered safety device designed to prevent the transmission of flames through pipelines carrying flammable gases, vapors, or volatile mixtures. It acts as a passive protection system, ensuring that any ignition event is contained and does not propagate to connected equipment such as storage tanks, reactors, or process units.

The 3” (DN80) configuration is suitable for higher flow capacity systems, offering enhanced throughput while maintaining reliable flame arresting performance.

2. Design & Configuration

• Type: In-Line Flame Arrester
• Model No.: FDI-FA-707
• Nominal Size: 3” (DN80)
• End Connection:
  • Flanged
  • Standard: ANSI B16.5
  • Pressure Rating: Class 150
  • Face Type: Raised Face (RF)
• Installation Orientation: Suitable for horizontal or vertical installation (as per system design)

3. Material of Construction

• Body: Stainless Steel SS304
• Flame Arresting Element: SS304 (multi-layer crimped ribbon / wire mesh element)
• Flanges: SS304, precision machined as per ANSI standards
• Fasteners: SS304 / SS316 (depending on design)
• Gasket Compatibility: PTFE / CAF / Spiral Wound Gasket (based on media and service)

4. Working Principle

The device operates on the flame quenching principle:

• A flame front entering the arrester is forced through a narrow passage flame arresting element
• The element provides high surface area, rapidly absorbing heat from the flame
• The flame temperature drops below its ignition point
• This effectively extinguishes the flame and prevents further propagation

5. Performance Characteristics

• Protection Type: Deflagration Flame Arrester
• Flame Arresting Direction: Bi-directional (subject to model design)
• Flow Capacity: Suitable for medium to high flow pipelines
• Pressure Drop: Low pressure loss due to optimized internal design
• Operating Temperature: Suitable for standard industrial temperature ranges
• Corrosion Resistance: High resistance due to SS304 construction
• Durability: Designed for continuous operation in harsh environments

6. Standards & Compliance

• Flange Standard: ANSI B16.5 Class 150 RF
• Designed as per industry safety norms for explosion protection
• Can be manufactured/tested in line with:
  • API Standards (where applicable)
  • ISO Guidelines
  • ATEX Certification (optional, if required)

7. Applications

• Oil & Gas Industry – pipeline protection, tank farms
• Petrochemical & Refineries
• Chemical Processing Plants
• Fuel Storage & Distribution Systems
• Pharmaceutical Manufacturing
• Biogas & LNG Systems
• Solvent & Vapor Handling Lines

8. Installation Guidelines

• Install in-line between flanged pipe sections
• Ensure:
  • Proper alignment of flanges
  • Use of correct gasket material
  • Tightening as per recommended torque values
• Preferred installation near:
  • Storage tank connections
  • Potential ignition sources
  • Process unit boundaries

9. Maintenance & Inspection

• Periodic checks required for:
  • Blockage due to dust, carbon deposits, or condensate
  • Corrosion or fouling of the element
• Cleaning frequency depends on process conditions
• Ensure flame arresting element integrity for reliable operation

10. Key Features

• Rugged SS304 construction for long service life
• High-efficiency flame quenching element
• Suitable for higher flow applications (3” line size)
• Compact inline design for easy integration
• Low maintenance and high operational reliability
• Effective protection against fire and explosion hazards

11. Product Identification Summary