One Harris dry flashback arrestor is recommended for each oxygen and fuel gas regulator. The main cause of dangerous explosions is mixed gas igniting in the regulator. The Harris dry flashback arrestors provide maximum protection with:

  • Large capacity non return valve to block slow and sudden gas reverse flow
  • Sintered metal filter to prevent flashback
  • Every flashback arrestor is factory tested against flashback

Flashback arrestors for regulators:

188-R 188-TL

Model Gases Max. flow LT/H

Max inlet pressure bar

Inlet/Outlet threads
188-R

Oxygen

100,000

20(2000)

9/16"x18 UNF-RH/9/16"x18 UNF-RH

188-L

Fuel gas

30,000

A:1.5 bar P:6 bar H:20

9/16"x18 UNF-LH/9/16"x18 UNF-LH

188-2R

Oxygen

180,000

20(2000)

9/16"x18 UNF-RH/9/16"x18 UNF-RH

188-2L

Fuel gas

60,000

A:1.5 bar P:6 bar H:20

9/16"x18 UNF-LH/9/16"x18 UNF-LH

188-TR

Oxygen

100,000

20(2000)

9/16"x18 UNF-RH/9/16"x18 UNF-RH

188-TL

Fuel gas

30,000

A:1.5 bar P:6 bar H:20

9/16"x18 UNF-LH/9/16"x18 UNF-LH

188-2TR

Oxygen

180,000

20(2000)

9/16"x18 UNF-RH/9/16"x18 UNF-RH

188-2TL

Fuel gas

60,000

A:1.5 bar P:6 bar H:20

9/16"x18 UNF-LH/9/16"x18 UNF-LH

188-RGB

Oxygen

100,000

20(2000)

3/8 - RH / 3/8 - RH

188-LGB

Fuel gas

30,000

A:1.5 bar P:6 bar H:20

3/8 - LH /3/8 - LH

188-2RGB

Oxygen

180,000

20(2000)

3/8 - RH / 3/8 - RH

188-2LGB

Fuel gas

60,000

A:1.5 bar P:6 bar H:20

3/8 - LH /3/8 - LH

188-TRGB

Oxygen

100,000

20(2000)

3/8 - RH / 3/8 - RH

188TLGB

Fuel gas

30,000

A:1.5 bar P:6 bar H:20

3/8 - LH /3/8 - LH

188-2TRGB

Oxygen

180,000

20(2000)

3/8 - RH / 3/8 - RH

188-2TLGB

Fuel gas

60,000

A:1.5 bar P:6 bar H:20

3/8 - LH /3/8 - LH

Flashback arrestors for Cutting Torches and Handles:

188-1R 188-GGR

Model Gas Max. flow LT/H Max inlet pressure bar Inlet/Outlet threads
188-1R8

Oxygen

65,000

20(2000)

Hose 8mm / 9/16"x18 UNF-RH

188-1L8

Fuel gas

20,000

A:1.5 bar P:6 bar H:20

Hose 8mm / 9/16"x18 UNF-LH

188-1R6

Oxygen

65,000

20(2000)

Hose 6mm / 9/16"x18 UNF-RH

188-1R6

Fuel gas

20,000

A:1.5 bar P:6 bar H:20

Hose 6mm / 9/16"x18 UNF-LH

188-1RGB8

Oxygen

65,000

20(2000)

Hose 8mm / 3/8 - RH

188-1LGB8

Fuel gas

20,000

A:1.5 bar P:6 bar H:20

Hose 8mm /3/8 - LH

188-1RGB6

Oxygen

65,000

20(2000)

Hose 6mm / 3/8 - RH

188-1LGB6

Fuel gas

20,000

A:1.5 bar P:6 bar H:20

Hose 6mm / 3/8 - LH

188-GGR

Oxygen

65,000

20(2000)

9/16"x18 UNF-LH/9/16"x18 UNF-RH

188-GGR

Fuel gas

20,000

A:1.5 bar P:6 bar H:20

9/16"x18 UNF-LH/9/16"x18 UNF-LH

188-GGGBR

Oxygen

65,000

20(2000)

Hose 6mm / 3/8 - RH

188-GGGBL

Fuel gas

20,000

A:1.5 bar P:6 bar H:20

Hose 6mm / 3/8 - LH

Flashback arrestors hose to hose:

188-TTR6

Model Gas Max. flow LT/H Max inlet pressure bar Inlet/Outlet threads
188-TTL8

Oxygen

100,000

20(2000)

Hose 8mm.

188-TTR8

Fuel gas

30,000

A:1.5 bar P:6 bar H:20

Hose 8mm

188-TTL 6

Oxygen

100,000

20(2000)

Hose 6mm

188-TTL 6

Fuel gas

30,000

A:1.5 bar P:6 bar H:20

Hose 6mm






Harris Model 88-5 FBR Flash-Guard
Regulator & Torch Flashback Arrestors

  • Prevents reverse flow of gases with built-in check valves
  • Extinguishes flashback fire with stainless steel sintered element
  • 9/16 - 18 outlets
  • Flow Capacity - Models 88-5FBT (R&L) and 88-5FBR (R&L) arrestors should not be used with tip sizes larger than those noted below:
    - Hand Cutting Tips - #5 (except for NFF TIPS - #4
    - Machine Cutting Tips - #5 1/2
    - Acetylene Heating Tips - #4
    - Alternate Fuel Heating Tips - #2
    - Cleaning Heads - #2 RBP (no limitation with RBA)
  • U.L. Listed


Torch Type
Model 88-5FBT (R&L)

(P/N 4301650)
Sold in pairs only

Regulator Type
Model 88-5FBR (R&L)

(P/N 4301651)
Sold in pairs only



Harris Model 88-5 FBR Flash-Guard
High Flow Regulator Flashback Arrestors

  • Same features as Model 88-5FBR (R&L) above plus a thermal shut-off which positively shuts off the gas in case of hose fire, burn back or repeated flashbacks.
  • High flow capacity - can be used with alL Harris tips
  • U.L. Listed


High Flow Regulator Type
Model 88-5FBHFR (R&L)

(P/N 4301652) - Oxygen
(P/N 4301655) - Fuel
Sold separately



Flashback Arrestors
Stainless steel flashback arrestors are designed for oxygen, hydrogen and other flammable or fuel gases. Standard with 1/4 NPT female inlet and 1/4 NPT male outlet connections make it easy to adapt in various lab applications. UL listed.
PART NUMBER DESCRIPTION WORKING PRESSURE ELASTOMERS
4301637



4301638
Hydrogen
LPG/Methane
Acetylene

Oxygen
50 PSIG
50 PSIG
15 PSIG

143 PSIG
Neoprene



Viton