Technical data
Accessories
Flashback Arrestors
67
Accessories
REGULATOR MOUNT For use with CGA “B” male fitting.
Stock No. Gas
H753 Oxygen & Fuel Gas Pair
TORCH MOUNT (HIGH FLOW)
Stock No. Gas
H743 Oxygen & Fuel Gas Pair
FEATURES & BENEFITS:
• Built-in check valve prevents the reverse flow of gas
• Requires no manual reset
• Easy to install - attaches to standard “B” fittings
• High quality brass construction, case is rugged and
corrosion resistant
• Sintered stainless steel filter stops flashback fire
• UL Listed
Frequently asked questions about flashback arrestors:
What is a flashback?
A flashback is an ignition of mixed gases in an oxy-fuel cutting and welding system.
Are flashback arrestors and check valves the same?
No. A check valve stops the reverse flow of gas; a flashback arrestor is designed to
help stop the advancement of a flashback fire. Smith’s flashback arrestor with built-in
check valve does both.
Why do I need a flashback arrestor?
Mixed gas explosions and flashback fires can result in damage to equipment and/or
severe personal injury or death. Smith flashback arrestors with built-in check valves
help prevent accidents caused by the reverse flow of gases and flashback fires.
What is the minimum pressure required to allow gas to flow through
the flashback arrestors?
The built-in check valve requires a minimum of 2 psi to open allowing gas to
flow through.
NOTE: Smith Equipment cannot accept return of check valves or flashback
arrestors as return shipping may compromise their performance capabilities.
PRESSURE SETTINGS
CAUTION: Flashback arrestors will contribute to significant
pressure drop in a system, causing reduced flow. Pressure
increase may be required to maintain equivalent flow rates
after installing flashback arrestors in an oxy-fuel system.
CAUTION: DO NOT exceed 15 PSIG with acetylene gas.
NOTE: Flashback Arrestors should be tested and inspected
on a regular basis.
May Be Used With: Acetylene,
propane, propylene, hydrogen and
natural gas.
Pressure PSI
Pressure PSI
SOLID BRASS CONSTRUCTION
STAINLESS STEEL FLAME BARRIER
POSITIVE O-RING SEAL
INTEGRAL CHECK VALVE
Oxygen Flow Capacity
Oxygen Flash Arrestors
Fuel Flow Capacity
Fuel Flash Arrestors
H753