1.Applications Designed for carbon steel and stainless steel reactor which meet DIN standard 2.Structure Features Top drive Single seal Unbalanced In accordance with DIN28154, DIN28141 and DIN28138 part1+3 Cartridge design 3.Operating Parameters Temperature: 1511/1511-B: -20°C to +150°C (-4°F to +302°F) 1511-BT: -20°C to +250°C (-4°F to +482°F) Pressure: to 6bar Speed: to 2m/s