Domestic Cylinders only(26mm). Excess Flow Cutoff: Automatic shutoff gas when a hosepipe is a Damage/Rupture Leak and Level Indicator: Detect any gas leak before gas appliances are ignited(gas leak from the pipe) and Indicate your cylinders low gas level Advance Lock Systems: Push locking gives better locking with the valve Dual Gas Sealed Technology: Facilitates leak-tight connection on the cylinder Domestic 5 Years Replacement Warranty. Design and Manufactured under European standards Product Liability Insurance Upto 10 Cr