- Pegler 1068 LS Brass Lockshield Gate Valve with a maximum allowable pressure greater than 0.5 bar is covered by these new Regulations. Valves are categorized according to their maximum working pressure, size, and rising level of hazard. The level of hazard varies according to the fluid being carried. Fluids are classified as Group 1, dangerous fluids, or Group 2, all other fluids including steam.









