For heating of piping and for controlling the temperature throughout the column the jacketed pipe sections are provided. Glass jacket is sealed to the pipe section using Viton ‘O’ ring and other sealing compositions. The seal prevents impermissibly high stresses between two tubes and allows the movement, which comes due to thermal expansion. Maximum operating pressure in the jacket :

DN 80 – DN 150      1.0 bar
DN 225 – DN 300    0.5 bar