Bottom Outlet Valve
Goel Glass manufactures high-precision Borosilicate Glass 3.3 Bottom Outlet Valves (Flush Bottom Valves) engineered to ensure complete, free-flowing, and zero dead-leg draining of process fluids and slurries from glass reaction vessels. Installed directly onto the bottom outlet nozzle of spherical and cylindrical vessels, these valves eliminate stagnant pockets where solids could accumulate or where unreacted chemical reagents might settle.
The valve core incorporates a precision-contoured virgin PTFE plug actuated by a smooth handwheel mechanism. The plug seals flush with the inner radius of the vessel base, guaranteeing an absolutely inert wetted boundary where media contacts solely Borosilicate 3.3 glass and pure PTFE. Available in standard angle and spacer configurations to match various vessel stand clearances.
| CAT.REF. | DN | DN1 | DN2 | L1 | Type |
|---|---|---|---|---|---|
| BAL1* | 25 | 25 | 25 | 150 | A |
| BAL1.5* | 40 | 25 | 25 | 150 | B |
| BAL2 | 50 | 25 | 40 | 150 | B |
Spacer Bottom Outlet Valve
| CAT.REF. | DN | DN1 | DN2 | L1 | L | B |
|---|---|---|---|---|---|---|
| SBAL1 | 25 | 25 | 15 | 40 | 110 | 175 |
| SBAL1.5 | 40 | 40 | 25 | 60 | 160 | 175 |
| SBAL2 | 50 | 50 | 40 | 60 | 160 | 175 |
Key Features
- Flush Seating Design: Zero dead space prevents settling of solids and unreacted reagents.
- Full Chemical Inertness: Process fluid contacts only borosilicate glass and pure PTFE.
- Smooth Handwheel Operation: Fine spindle threading provides precise flow modulation and positive tight shut-off.
- Integrated Temperature Sensor Port: Available with optional thermo-pocket sensor integration directly in the valve plug.
Applications
Essential bottom drain control for batch reactors, jacketed crystallization vessels, rotary evaporator flasks, and pilot distillation reboilers.