Three Neck Bottom Outlet Spherical Vessels

Three Neck Bottom Outlet Spherical Vessels

Three Neck Bottom Outlet Spherical Vessels are multi-access borosilicate glass vessels designed for processes requiring simultaneous operations such as charging, agitation, condensation, and drainage within a single vessel. The spherical geometry ensures uniform stress distribution, making the vessel highly suitable for vacuum, thermal cycling, and reactive chemical environments.

The presence of three top necks allows flexible integration of stirrers, condensers, thermowells, feed lines, or sensors, while the bottom outlet enables complete and controlled discharge of process media with minimal hold-up.

Construction & Manufacturing

• Manufacturing technique: Skilled manual flame-working
• Body shape: True spherical profile for pressure balance
• Neck configuration:
• One central main neck (agitator or condenser)
• Two auxiliary necks (feeding, instrumentation, reflux)
• Bottom outlet: Precisely aligned drain nozzle for full evacuation
• Annealing: Controlled annealing to remove internal stress
• Surface finish: Smooth internal walls to avoid fouling and product loss

Material of Construction

• Primary material: Borosilicate Glass 3.3
• Key material benefits:
• Exceptional chemical resistance
• High thermal shock tolerance
• Non-reactive and non-absorptive
• High transparency for process observation
• Low thermal expansion, ideal for heating and cooling cycles

Technical Specifications

Capacity Range

• 1 L to 5 L – laboratory scale
• 10 L to 50 L – pilot scale
• 100 L to 500 L – industrial scale

(Custom volumes available on request)

Operating Parameters

Parameter	Specification
Operating pressure	Atmospheric to full vacuum
Vacuum rating	Up to –1 bar (design dependent)
Operating temperature	Suitable for low-temperature to high-temperature processes
Thermal cycling	Designed for repeated heating/cooling
Heating options	Heating mantle, oil bath, water bath
Cooling options	External cooling, natural cooling

Neck & Outlet Configuration

• Top necks:
• Central neck: agitator / condenser
• Side necks: addition funnel, thermometer, reflux, sensor
• Bottom outlet:
• Flush or nozzle-type drain
• Allows complete product discharge
• Joint options:
• Ground glass joints
• Flanged connections with PTFE gaskets
• Seal compatibility: PTFE, Viton, or elastomer seals

Mechanical & Design Features

• Optimized wall thickness based on volume and vacuum rating
• Minimal dead volume due to spherical base and bottom outlet
• Uniform mixing efficiency when used with agitator systems
• External support: cradle or ring support recommended for large sizes
• Mounting compatibility: floor stand, skid frame, or lab stand

Typical Applications

• Chemical reaction vessels
• Vacuum distillation & reflux operations
• Solvent recovery processes
• Crystallization and precipitation
• Batch synthesis in R&D and pilot plants
• Intermediate storage with controlled discharge

System Integration

These vessels integrate easily with:

• Overhead stirrers and agitators
• Glass condensers and reflux columns
• Addition funnels and dosing systems
• Vacuum pumps and receivers
• Heating mantles and temperature controllers

Optional Customizations

• Jacketed spherical vessel (glass or metal jacket)
• Custom neck sizes and orientations
• Special bottom outlet designs
• Increased wall thickness for higher safety margin
• Custom support frames

Quality & Inspection

Each vessel is subjected to:

• Visual inspection for defects
• Dimensional accuracy checks
• Stress-relief verification
• Joint and outlet alignment inspection
• Safe export-grade packaging

Why Choose Bhanu Scientific Glass Co.

• Expertise in industrial borosilicate glass equipment
• Custom-engineered vessels for process-specific needs
• Repairable and modular designs for long service life
• Trusted supplier for laboratory to industrial glass systems
• Consistent quality with Indian manufacturing excellence