Pressure die-cast V-cut base with riffled gas inlet, fitted with a 12mm brass chrome-plated tube having a sleeve type air regulator around the jet nozzle. Overall height – 145mm.
| Part Number | Details |
| 401528 | Bunsen Burner 12mm Natural Gas with air regulator |
| 401529 | Bunsen Burner 12mm LPG with air regulator |