Left Hand Thread Welding Gas Flashback Arresters

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13 Products

Welding Gas Flashback Arresters for Regulators

Attach these arresters to the outlet connection of a regulator on a torch that cuts steel up to 11" thick. Arresters extinguish flames and have a check valve to stop reverse gas flow. They are reusable; resetting is not required after flashback.

Left-Hand Threads—UNF Male × UNF Female


Standard Flashback Arresters	High Flow Flashback Arresters	Quick Disconnect Flashback Arresters

Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.

High Flow Flashback Arresters—High-flow arresters give you twice the airflow rate compared to standard flashback arresters when they’re used at the same inlet pressure. They are often used with larger torch tips.

Quick Disconnect Flashback Arresters—Quick-disconnect arresters have a fitting that connects and disconnects them from your torch, so you don't have to thread these arresters on and off with a wrench.

		Max. Pressure, psi
	Thread Size	Acetylene	Hydrogen	Propane	Material	Specs. Met		Each
Standard Flashback Arresters



		3/8"-24	15	50	50	Brass	EN 730, ISO 5175	0000000	000000


		9/16"-18	15	50	50	Brass	EN 730, ISO 5175	00000000	00000


		High Flow Flashback Arresters



				9/16"-18	15	50	50	Brass	EN 730, ISO 5175	00000000	000000


				7/8"-14	15	50	50	Brass	EN 730, ISO 5175	00000000	000000


				Quick Disconnect Flashback Arresters



						9/16"-18	15	50	50	Brass	EN 561, ISO 7289	00000000	000000

Right-Hand and Left-Hand Threads—UNF Male × UNF Female

Standard

Flashback

Arresters

Arresters with right-hand threads are for use with oxygen.

Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.

		Max. Pressure, psi
	Thread Size	Oxygen	Acetylene	Hydrogen	Propane	Material	Specs. Met		Pair
Standard Flashback Arresters



		9/16"-18	143	15	50	50	Brass	EN 730, ISO 5175	00000000	0000000

Left-Hand Threads—NPT Female × NPT Female

Standard

Flashback

Arresters

Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.

		Max. Pressure, psi
	Pipe Size	Acetylene	Hydrogen	Propane	Material	Specs. Met		Each
Standard Flashback Arresters



		1/4	15	50	50	Brass	EN 730, ISO 5175	00000000	0000000

Welding Gas Flashback Arresters for Torches

These arresters attach directly to torches that cut steel up to 8" thick. They extinguish flames and have a check valve to stop reverse gas flow. They are reusable; resetting is not required after flashback.

Left-Hand Threads—UNF Male × UNF Female


Standard Flashback Arresters	High Flow Flashback Arresters	Quick Disconnect Flashback Arresters

Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.

		Max. Pressure, psi
	Thread Size	Acetylene	Hydrogen	Propane	Material	Specs. Met		Each
Standard Flashback Arresters



		9/16"-18	15	50	50	Brass	EN 730, ISO 5175	00000000	000000


		High Flow Flashback Arresters



				3/8"-24	15	50	50	Brass	EN 730, ISO 5175	0000000	00000


				9/16"-18	15	50	50	Brass	EN 730, ISO 5175	00000000	000000
				7/8"-14	15	50	50	Brass	EN 730, ISO 5175	00000000	000000


				Quick Disconnect Flashback Arresters



						9/16"-18	15	50	72	Brass	EN 561, ISO 7289	00000000	00000

Right-Hand and Left-Hand Threads—UNF Male × UNF Female

Standard

Flashback

Arresters

Arresters with right-hand threads are for use with oxygen.

Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.

		Max. Pressure, psi
	Thread Size	Oxygen	Acetylene	Hydrogen	Propane	Material	Specs. Met		Pair
Standard Flashback Arresters



		9/16"-18	143	15	50	50	Brass	EN 730, ISO 5175	00000000	0000000