This is a PAC Type B100 Snap On Compact Low Pressure Regulator (GR18).
It is designed for use with 6kg Mecko gas cylinders.
The regulator features an automatic pressure control system to maintain a constant gas flow.
It is a low-pressure regulator, specifically for use with propane/butane gas.
The regulator ensures maximum safety with a tight sealing mechanism to prevent gas leaks.