We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Pair of brass flashback arrestors with 3/8-24 UNF fittings

Uniweld

Uniweld RFAA Flashback Arrestor Set, Regulator Mount, Oxy/Fuel, 3/8-24 UNF

SKU CH-ZNEY-PX9F0

Regulator-mount flashback arrestor set for oxygen and fuel gases with 3/8-24 UNF connections

  • TypeWelding Parts & Supplies
  • Prevents dangerous flashback with regulator-mounted arrestor set
  • Compatible with both fuel and oxygen gas supplies
  • Standard 3/8-24 UNF inlet and outlet connections
  • Fuel inlet uses CGA 21 fitting for secure attachment
  • Oxygen inlet uses CGA 20 fitting for proper sealing

Regulator-mount flashback arrestor set

The Uniweld RFAA set installs directly onto the regulator for both oxygen and fuel lines. It suits welders and fabricators who need a compact, inline safety device that fits standard regulator outlets without extra adapters.

3/8-24 UNF connections

The arrestors accept 3/8-24 UNF threads on both inlet and outlet sides. Oxygen inlet uses CGA 020 while fuel inlet uses CGA 021, and both outlets match hose fitting size A for direct torch-hose attachment.

Handles typical oxy-fuel cutting and heating torches

The pair provides flashback protection for common regulator-mounted workflows. It is not suited for high-flow industrial manifolds or machine-mounted torches that demand larger-capacity arrestors.

Highlights

  • Prevents dangerous flashback with regulator-mounted arrestor set
  • Compatible with both fuel and oxygen gas supplies
  • Standard 3/8-24 UNF inlet and outlet connections
  • Fuel inlet uses CGA 21 fitting for secure attachment
  • Oxygen inlet uses CGA 20 fitting for proper sealing

Specifications

BrandUNIWELD
TypeWelding Parts & Supplies

Questions about this item

Will the flashback arrestors need periodic replacement of internal check valves or filter elements?

The set contains no user-serviceable internals; replace the complete arrestor if flow drops or after any flashback event.

What pressure or flow limit will the 3/8-24 UNF connections reach first during continuous cutting?

The CGA 020 oxygen and CGA 021 fuel inlets are rated for standard regulator pressures; the 3/8-24 UNF fittings set the practical flow ceiling.

How much heat do the arrestor bodies generate when mounted on regulators for an all-day job?

Brass bodies stay near ambient temperature; only the gas flow absorbs any heat, so regulator mounts remain cool.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.