0656-0007 - Victor Cutskill FBR2 Regulator-Mount Flashback Arrestor Pair

Technical Overview of Victor Cutskill FBR2 Flashback Arrestors

The Victor 0656-0007 FBR2 Flashback Arrestor set is a critical safety component designed for industrial oxy-fuel cutting and welding systems. Engineered as part of the Cutskill® line, these devices provide a dual-layer safety mechanism that integrates both a reverse flow check valve and a flame arrestor into a compact brass body. The primary function of the FBR2 is to prevent the propagation of a flame front from the hose back into the regulator and cylinder, a potentially catastrophic event known as a flashback. This is achieved through a sintered stainless steel filter that quenches the flame by rapidly dissipating heat below the ignition temperature of the gas mixture.

In addition to flame quenching, the built-in check valves prevent the reverse flow of gases. Reverse flow can occur when one cylinder empties or when a tip becomes clogged, causing high-pressure gas to travel up the lower-pressure line. This creates a volatile mixed-gas condition within the hose or regulator. The FBR2's check valves mechanically block this backflow, ensuring that oxygen and fuel gas remain separated until they reach the mixing chamber of the torch. The unit is designed for regulator mounting, which places the safety device at the source of the gas supply. This configuration is often preferred in heavy-duty applications as it does not add weight or bulk to the torch handle, thereby reducing operator fatigue during extended use.

The assembly features standard "B" size 9/16"-18 threads, with right-hand (RH) threads for the oxygen unit and left-hand (LH) threads for the fuel gas unit. This adherence to CGA 022 and CGA 023 standards prevents accidental cross-connection of hoses, a vital fail-safe in shop environments. The units are 100% factory tested to ensure reliable performance under industrial pressures. The robust brass housing offers significant durability against mechanical impact and corrosion, making the FBR2 suitable for structural steel fabrication, repair and maintenance, and general light fabrication environments.

Key Technical Specifications:

• Model: FBR2 (0656-0007)
• Mounting Position: Regulator Outlet
• Gas Compatibility: Oxygen and Fuel Gas (Acetylene, Propane, Propylene, etc.)
• Connection Standard: CGA 022 (Oxygen) and CGA 023 (Fuel)
• Mechanism: Sintered metal flame barrier and spring-loaded check valve