Four Neck Bottom Outlet Spherical Vessels

Four Neck Bottom Outlet Spherical Vessels

Four Neck Bottom Outlet Spherical Vessels are advanced multi-functional borosilicate glass vessels engineered for complex chemical processes requiring multiple simultaneous connections such as agitation, reflux, feeding, sampling, and instrumentation. The spherical geometry provides superior mechanical strength and uniform stress distribution, making these vessels ideal for vacuum operations, thermal cycling, and reactive media.

With four top necks and a bottom outlet, the vessel allows excellent process flexibility, safe operation, and complete product discharge, even in demanding laboratory, pilot, or industrial environments.

Construction & Manufacturing

• Manufacturing method: Precision manual flame-working
• Body geometry: True spherical form for optimal stress balance
• Neck arrangement:
• One central main neck (agitator or condenser)
• Three auxiliary necks (charging, sensors, reflux, sampling)
• Bottom outlet: Centrally aligned drain for total evacuation
• Annealing process: Controlled annealing for stress elimination
• Internal surface: Smooth, non-porous finish to prevent fouling

Material of Construction

• Standard material: Borosilicate Glass 3.3
• Material advantages:
• Excellent chemical resistance to acids, solvents, and reagents
• High thermal shock resistance
• Non-absorptive and contamination-free
• Full visual transparency for process monitoring
• Low coefficient of thermal expansion

Technical Specifications

Capacity Range

• 1 L – 5 L : Laboratory scale
• 10 L – 50 L : Pilot scale
• 100 L – 500 L : Industrial scale

(Custom capacities 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 wide temperature ranges
Thermal cycling	Designed for repeated heating & cooling
Heating methods	Mantle, oil bath, water bath
Cooling methods	External or jacket-assisted (optional)

Neck & Outlet Configuration

• Top necks (4 total):
• Central neck: agitator / condenser
• Auxiliary necks: addition funnel, thermometer, reflux, sensors
• Bottom outlet:
• Flush or nozzle-type drain
• Enables complete discharge with minimal residue
• Connection options:
• Ground glass joints
• Flanged connections with PTFE gaskets
• Seal compatibility: PTFE, Viton, or custom elastomers

Design & Mechanical Features

• Optimized wall thickness for vacuum and mechanical stability
• Minimal dead volume due to spherical base and bottom outlet
• Uniform mixing efficiency with overhead agitators
• Support compatibility: ring support, cradle, or skid frame
• Designed for safe integration with external equipment

Typical Applications

• Multi-step chemical reactions
• Vacuum distillation & reflux systems
• Crystallization and precipitation
• Pharmaceutical and fine chemical synthesis
• Pilot-scale process development
• Batch operations with multiple feed points

System Integration

The vessel integrates seamlessly with:

• Overhead stirrers & gear motors
• Condensers and fractionating columns
• Addition funnels and dosing pumps
• Vacuum systems and receivers
• Heating mantles and temperature controllers

Optional Customizations

• Jacketed spherical vessel (glass or metal jacket)
• Custom neck sizes, angles, and spacing
• Special bottom outlet designs
• Higher wall thickness for enhanced safety
• Custom support frames or skids

Quality & Inspection

Each vessel undergoes:

• Visual and dimensional inspection
• Stress-relief validation
• Neck alignment and outlet testing
• Surface finish verification
• Secure, export-grade packaging

Why Choose Bhanu Scientific Glass Co.

• Proven expertise in industrial borosilicate glass systems
• Custom-engineered solutions tailored to process needs
• Modular and repairable designs for long service life
• Reliable partner for lab, pilot, and industrial glass equipment
• Commitment to quality, precision, and durability