IIGAS flashback arrestors (models KIG-FBA-PM, HP, NRV and WT) shut off gas flow and extinguish the flame before a flashback can reach your regulator, cylinder or pipeline. Each has a built-in non-return valve that lets gas flow one way only, plus a flame arrestor element — built to BIS 11006, ISO 5175 and EN 730-1.
A flashback arrestor is a safety device that shuts off gas flow if combustion of a flame mixture occurs in the gas system and tries to travel back toward the gas source. IIGAS arrestors stop that flashback and quench the flame before it can reach the regulator, cylinder or pipeline. Because a flashback can be caused by failing to purge the line, improper pressure, leaks or incorrect operation, an arrestor should be fitted on both the fuel-gas and the oxygen line.
Every IIGAS arrestor combines up to five safety elements: a contaminate filter, a non-return valve that blocks the flow of gas in the opposite direction (gas flows in one direction only), a flame block and flame trap that quench the flame, and — on fuel-gas models — a temperature-activated flow cut-off device. The KIG-FBA-PM is made for pipelines and gas manifolds (up to 25 bar working pressure); the KIG-FBA-HP fits welding and cutting hose pipes (up to 2 bar), with NRV and WT variants for other duties.
To prevent cross-connection, fuel-gas arrestors use left-hand (LH) threads and oxygen/air arrestors use right-hand (RH) threads. For safety, arrestors must be tested by a qualified, authorised person for gas tightness and gas return at least once a year, and replaced after any flashback.
Specifications & technical data
Applications
- ✓Oxy-fuel welding and cutting safety
- ✓Regulator-end and torch-end protection
- ✓Manifold and pipeline flame protection
- ✓Acetylene, LPG, hydrogen and oxygen systems