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Brass flashback arrestor set with 9/16-18 UNF fittings for oxygen and fuel regulators

Victor Thermal Dynamics

Victor Thermal Dynamics 0656-0007 Flashback Arrestor Regulator Oxy/Fuel

SKU CH-4PAF-9WWB9

Flashback arrestor set mounts on regulators for oxygen and fuel gases with 9/16-18 UNF connections and brass body

  • TypeWelding Parts & Supplies
  • ETL Listed certification confirms safety compliance
  • Brass body resists corrosion in oxy/fuel service
  • Regulator-mount design fits directly on the regulator
  • CGA 022 oxygen inlet matches standard supply fittings
  • 9/16-18 UNF connections accept B-size hose fittings

Flashback Arrestor for Oxy/Fuel Regulators

The Victor 0656-0007 flashback arrestor set mounts directly to a regulator for oxygen and fuel gas welding systems. It stops reverse gas flow and flame propagation to protect the operator and equipment during cutting or brazing work. The brass body and ETL listing confirm it meets recognised safety requirements for professional workshop use.

Upgrade from Unprotected Regulator Connections

Adding this arrestor replaces a bare regulator outlet or an older non-listed device when safety codes or insurance require a certified flashback stop. The jump is worth it whenever the existing setup lacks an ETL-listed arrestor with matching 9/16 in.-18 UNF connections and CGA 022 oxygen inlet compatibility.

Limits of the 9/16 in.-18 UNF Interface

The inlet and outlet share a 9/16 in.-18 UNF thread with a CGA 022 oxygen designation and B-size hose fitting, so the arrestor only fits regulators and hoses built to that exact specification. It cannot be used with different thread pitches, CGA numbers or hose-fitting sizes without adapters that are not included or referenced.

Highlights

  • ETL Listed certification confirms safety compliance
  • Brass body resists corrosion in oxy/fuel service
  • Regulator-mount design fits directly on the regulator
  • CGA 022 oxygen inlet matches standard supply fittings
  • 9/16-18 UNF connections accept B-size hose fittings

Specifications

BrandVICTOR
TypeWelding Parts & Supplies

Questions about this item

What regulator-thread size does the 9/16 in.-18 inlet on this flashback arrestor match?

The 9/16 in.-18 UNF inlet threads directly onto a standard regulator outlet with the same CGA 022 oxygen fitting, so no adapter is needed for that connection.

Which step do installers most often skip when fitting the arrestor between the regulator and the hose?

They forget to leak-test both the regulator-to-arrestor and arrestor-to-hose joints with soapy water before lighting the torch, risking an undetected oxygen or fuel leak.

How do I know when the brass-bodied CutSkill FBR-2 arrestor set needs replacement?

Replace the set if the internal check valves fail a flashback test, if corrosion appears on the brass body, or if the ETL-listed markings become illegible after prolonged use.

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