FLASHBACK ARRESTOR FOR PRESSURE REGULATOR ACETYLENE
Specification：
Product Name: AB-10 Series Acetylene Pressure Regulator Special Anti Tempering Device
The AB-10 series is a critical safety equipment designed specifically for dissolving acetylene cylinders and low-pressure systems, and is particularly suitable for standard acetylene pressure regulators with a working pressure of 1.5 bar. This product accurately matches the safe use requirements of acetylene gas in welding and cutting operations with its rated flow rate of 10 m ³/h. It uses a built-in high-sensitivity mechanical safety mechanism to physically block flames and high-pressure reverse airflow at the moment of flashback (millisecond level), effectively preventing flames from entering the pressure regulator and upstream gas cylinder, completely eliminating the risk of explosion caused by acetylene flashback. It is an indispensable last line of defense in the safe use of acetylene gas.
Technical data:
Applicable gas: Dissolved acetylene (C ₂ H ₂) specifically optimized for acetylene gas characteristics, material compatibility, and no catalytic risk.
Maximum working pressure: 1.5 bar (inlet side) perfectly matches the outlet pressure of the standard acetylene pressure reducer, which is the dedicated working pressure for acetylene safety systems.
Rated flow rate: 10 m ³/h (under standard operating conditions) meets the concurrent flow requirements of single or multiple small and medium-sized welding torches, and the design balances safety response and performance.
Entrance connection: G3/8 “left-hand thread (reverse thread) key safety feature! Using acetylene specific left-hand threads (reverse threads) to physically distinguish them from standard oxygen/gas right-hand threads, fundamentally preventing fatal errors in gas mixing.
Export connection: Optional: 6mm or 8mm quick connector with universal welding and cutting hose interface for easy connection. The interface is usually right-hand threaded to distinguish the inlet end.
Trigger temperature: about 95 ± 10 ° C, a low-temperature trigger point optimized for the heat transfer characteristics of acetylene gas flow, with extremely rapid reaction. Valve body material: High strength brass body is made of high-quality brass to ensure mechanical strength and avoid harmful chemical reactions with acetylene.
Safety standards: comply with international standards such as CE-PED and EN ISO 5175-1 for the safety requirements of acetylene equipment.
Product details:
Intrinsic Safety Design – Left Hand Thread (LHT):
The inlet end is forced to use G3/8 “left-hand thread, which is the internationally recognized safety label for acetylene equipment. This design is the fundamental physical guarantee to prevent incorrect connection with oxygen or other gas regulators, and is of utmost importance for the safety of acetylene systems.
Acetylene specific safety mechanism:
Core safety module: Built in acetylene specific thermal cut-off valve. Its design fully considers the extremely fast propagation speed of acetylene flame, which can be cut off before the tempering shock wave arrives.
Integrated check function: Under normal conditions, it has a one-way valve function to prevent gas backflow and stabilize system pressure.
Low pressure and high flow optimization:
Optimize the flow channel for the low-pressure characteristics of the acetylene system at 1.5 bar to ensure minimal pressure loss (usually<0.05 bar) at a flow rate of 10 m ³/h, ensuring the stability and cutting efficiency of the welding torch flame.
Status indication and convenient maintenance:
Equipped with clear trigger indicator windows (usually marked in green/red), the device status can be quickly identified from a distance (normal/triggered).
Adopting a replaceable safety core. After triggering, only specialized tools are needed to replace the internal core module, and the valve body can be reused, greatly reducing long-term usage costs and simplifying maintenance processes.
Application:
Gas welding and cutting operations using dissolved acetylene cylinders.
On site welding for metal processing, maintenance workshops, pipeline construction, etc.
Export protection of acetylene busbar system.
Any gas pipeline system that complies with international safety regulations for “right-handed oxygen (and other gases), left-handed acetylene”.
Order Information:
Basic model: AB-10-LHT38F06 (left-handed G3/8 “inlet, outlet 6mm)
Optional model: AB-10-LHT38F08 (left-handed G3/8 “inlet, outlet 8mm)
Safety spare parts: acetylene specific replacement safety core module (Cartridge for AB-10)