Jacketed Glass Vessels
Goel Glass manufactures high-precision Borosilicate 3.3 Jacketed Glass Vessels engineered for demanding chemical processes requiring strict temperature regulation, such as exothermic reactions, active pharmaceutical ingredient (API) crystallization, and vacuum distillation. Fabricated from certified Schott Duran or equivalent 3.3 expansion borosilicate glass, our jacketed vessels provide complete chemical inertness across aggressive acids, organic solvents, and high-purity syntheses.
For thermal heating or cooling, the outer jacket is sealed to the inner vessel body with chemical-resistant Viton® ‘O’ rings and specialized sealing compositions. This flexible sealing system accommodates differential thermal expansion between the inner process vessel and the outer jacket, preventing mechanical stress cracking during rapid heating or chilling. The glass jacket is rated for an operating pressure up to 0.5 bar(g), operating temperatures up to 130°C in the jacket, and a maximum permissible temperature difference (ΔT) of 120°C between the jacket fluid and process media.
Engineered for complete process visibility, our jacketed vessels integrate effortlessly with circulators, overhead stirring agitators, and flush-bottom drain valves for zero-dead-space drainage. Vacuum-jacketed models are also available to provide transparent thermal insulation, minimizing heat loss to the ambient environment and preventing frost formation during sub-zero cryogenic operations.
| 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 |
Dimensional Key:
- L, L1, L2: Overall vessel height, jacket body height, and bottom outlet clearance (mm).
- D1, D2: Internal vessel diameter and outer jacket diameter (mm).
- DN, DN1, DN2: Top vessel neck, bottom drain outlet, and jacket service fluid nozzles (DN).
- A, B: Jacket nozzle spacing and centerline dimensions (mm).
Salient Features of Jacketed Vessels
- Certified Schott Duran® Glass: Manufactured from premium 3.3 expansion borosilicate glass offering highest chemical resistance and thermal durability.
- Transparent Vacuum Insulation: Vacuum-jacketed options minimize heat loss, maintain clear process visibility, and prevent frost formation during cryogenic operation.
- Detachable Vessel & Jacket Design: Provides ease of cleaning, eliminates stress fractures from thermal expansion, and allows partial replacement of components to reduce lifetime maintenance costs.
Key Features
- Precise Thermal Regulation: Dual-wall jacket facilitates rapid heat transfer for exothermic and endothermic reactions.
- Thermal Expansion Relief: Viton-sealed jacket design prevents stress cracking under thermal cycling.
- Full Visual Process Control: High-clarity annealed glass allows continuous visual monitoring of crystallization, color shifts, and foam formation.
- Flush Bottom Drain Outlet: Ready for zero-dead-space valve installation.
Applications
Widely used in active pharmaceutical ingredient (API) synthesis, cannabinoid crystallization, temperature-controlled polymerizations, and fine chemical pilot plants across Canada and the USA.