For special applications, cylindrical vessels can be supplied with a jacket for heating or cooling. The jacket is sealed to the vessel with Viton ‘O’ ring and other sealing compositions. The seal prevents high stresses between vessel and jacket by allowing the movement flexibility between the two due to thermal expansion.
A glass Jacket can be used for a maximum operating pressure of 0.5 bar and a maximum o operating temperature of 130 C in a jacket. The temperature difference between jacket & vessel 0 should not exceed than120 C.
| Cat.Ref. | L | L1 | L2 | A | B | D1 | D2 | DN | DN1 | DN2 | TYPE |
| VZD5/6 | 500 | 325 | 125 | 75 | 275 | 165 | 215 | 150 | 25 | 25 | A |
| VZD10/9 | 575 | 400 | 125 | 90 | 340 | 230 | 280 | 225 | 25 | 25 | B |
| VZD20/12 | 625 | 450 | 125 | 100 | 385 | 315 | 370 | 300 | 25 | 40 | B |
| VZD30/12 | 750 | 575 | 175 | 100 | 510 | 315 | 370 | 300 | 25 | 40 | B |
| VZD50/12/14 | 1050 | 875 | 175 | – | – | 315 | 365 | 300 | 25 | 40 | C |
| VZD50/16/20 | 825 | 650 | 175 | – | – | 415 | 500 | 400 | 25 | 40 | C |
| VZD100/20/24 | 955 | 780 | 175 | – | – | 516 | 600 | 500 | 25 | 40 | C |
| VZD200/24/28 | 1175 | 1000 | 175 | – | – | 615 | 700 | 600 | 25 | 40 | C |
