Thermamax Flashback Arrestors (Oxygen & Fuel Gas)

Thermamax Flashback Arrestors deliver essential multi-stage protection for oxy-fuel systems. Featuring a stainless steel flame-arresting element and a thermal cut-off valve, they prevent reverse gas flow and extinguish flashbacks to protect the operator and gas cylinders.

  • Multi-Stage Safety: Includes flame arrestor, non-return valve, and thermal cut-off.
  • Clear Identification: Color-coded for Oxygen (Blue) and Fuel Gas (Red).
  • High-Pressure Reliability: Rated for industrial welding, cutting, and heating.
  • Certified Protection: Complies with international EN 730-1 safety standards.

Description

Thermamax Flashback Arrestors are critical safety components engineered to protect operators and equipment during oxy-fuel welding, cutting, and heating processes. Designed to prevent the reverse flow of gases and extinguish dangerous flashbacks before they reach the primary gas source, these arrestors are a mandatory safety requirement for industrial workshops. Each unit features a multi-stage protection system, including a non-return valve and a flame-arresting element, ensuring maximum security when working with pressurized Oxygen, Acetylene, or LPG.

 

Key Features:

  • Sintered Stainless Steel Filter: Effectively cools and extinguishes the flame front (the flashback) by dissipating heat instantly across a high-surface-area element.
  • Non-Return Valve (Check Valve): Prevents the dangerous mixing of gases in the hoses by stopping reverse gas flow immediately.
  • Thermal Cut-off Valve: Automatically shuts off the gas supply if the internal temperature of the arrestor reaches a critical limit due to a sustained flashback.
  • Color-Coded Identification: Bodies are clearly marked and color-coded (Blue for Oxygen, Red for Fuel Gas) to ensure correct installation and prevent cross-contamination.
  • High-Flow Capacity: Engineered to provide minimal pressure drop, ensuring consistent torch performance even during heavy-duty cutting operations.
  • Universal Compatibility: Available in both Regulator-Mount and Torch-Mount configurations with standard 3/8-inch BSP threads.

 

Technical Specifications:

  • Gas Types: Oxygen (O2), Acetylene (AC), and LPG/Propane.
  • Mounting Options: Regulator-Mount (Standard) or Torch-Mount (Compact).
  • Max Working Pressure: * Oxygen: 10 Bar (1.0 MPa)
  • Acetylene: 1.5 Bar (0.15 MPa)
  • LPG: 5 Bar (0.5 MPa)
  • Thread Size: 3/8″ BSP Left Hand (Fuel) / Right Hand (Oxygen).
  • Standard Compliance: Fully compliant with EN 730-1 and SANS 50730-1 safety standards.

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