LESER High Performance Safety Valves are designed to meet all industrial applications, open rapidly with an overpressure of 5 % to the full design lift, and are used particularly for vapor’s and gases where the maximum mass flow has to be discharged rapidly. They have a maximum blowdown of minus 10 % for steam/gas service and minus 20 % for liquid service. They are one of the best selling spring loaded safety valve worldwide. Developed in a close cooperation with plant engineers and service specialists, they serve for protection of processes and equipment.