In-Line Deflagration Flame Arresters – LCB

LCB Series

Gas Groups: C | IIB1, IIB2 & IIB3 

The Protectoseal LCB Series of In-Line Deflagration Flame Arresters is designed to prevent the propagation of flames in piping systems. Flames (or an explosion) are confined to the immediate area by positioning one of our flame arresters near the potential source of ignition. The LCB Series incorporates crimped-ribbon technology in the flame arrester element, the metal matrix of which has been optimized utilizing our in-house CFD capability to ensure industry-leading flow vs pressure drop characteristics. 


  • Suitable for in-line deflagration 
  • Exceptional flow capacities with minimal pressure drop 
  • Bi-directional protection simplifies installation 
  • Easy-clean, replaceable, crimped-ribbon elements for easier maintenance  


  • Sizes: 1/2” (15mm) through 12” (300mm) 
  • Connections: ANSI 150 Flange 
  • Maximum Initial Pressure: 15.95 PSIA (1.1 bara) 
  • Maximum Initial Temperature: 140⁰ F (60⁰ C) 
  • Housing Configuration: Concentric 
  • Reducer/Element Housing Materials: Stainless Steel, Carbon Steel 
  • Element Material: 316 Stainless Steel 
  • Gas Groups: C | IIB1, IIB2 & IIB3 
  • Testing & Certifications: EN ISO 16852 and approved to ATEX Directive 2014/34/EU. 
  • Elevated pressures 
  • High temperature 
  • Short time burn* 
  • Alternative connections available 
  • Additional materials available 
  • Coatings 
    • PTFE 
    • Offshore Paint and Coating** 
    • Others on Request 
  • NACE conformance (all wetted parts) 

* Protection for up to 2 minutes (any secondary protection measure must be implemented within 60 seconds of detection of a short time burn event)  

**Adds a protective layer to the flame arrester. Primarily employed in offshore platform applications.