The MEDILAB Rotaflow Stopcock, Right Angle, is a precision-crafted valve designed for controlled liquid transfer in laboratory and industrial glassware systems. Its 90° outlet configuration enables smooth directional flow, making it ideal for distillation setups, liquid routing, and controlled dispensing applications. Engineered from high-quality Borosilicate Glass 3.3, this stopcock ensures excellent chemical resistance, operational stability, and long service life in demanding environments.

Key Features

• Right-Angle (90°) Flow Path for efficient directional control in complex setups.
• Smooth, Low-Torque Rotation ensures precise regulation and leak-free operation.
• High Chemical Resistance suitable for acids, alkalis, solvents, and aggressive reagents.
• Durable Borosilicate Glass 3.3 Construction guaranteeing enhanced thermal and mechanical performance.
• Clear Visibility of liquid movement for secure and accurate operation.
• Universal Interchangeability is compatible with standard laboratory glassware systems.
• Autoclave-Safe & Heat Resistant, ensuring safe sterilisation and repeated use.
• Robust Build Quality engineered for long-term use in professional laboratory environments.

Material Specifications

Material: Premium Borosilicate Glass 3.3
Thermal Properties: Low thermal expansion coefficient (~3.3 × 10⁻⁶/K) Excellent resistance to thermal shock

Chemical Properties: High resistance to strong acids, alkalis, halogens, and organic solvents. No risk of leaching or contamination

Mechanical Properties: High hardness & scratch resistance. Maintains stability under repeated mechanical stress

Compliance: standards for interchangeable laboratory glassware. Suitable for GLP/GMP-compliant laboratory workflows

Technical Specifications

• Design: Right Angle (90°) Rotaflow Stopcock
• Joint Type: Compatible with standard lab glass joints and tubing
• Bore Sizes: Available in multiple bore diameters depending on application (OEM customizable)
• Operating Temperature: Up to 200–250°C (dry heat) Safely autoclavable
• Accuracy & Tolerance: Precision-ground surfaces for uniform sealing and consistent flow control
• Accessories (Optional): PTFE-free lubricants, Replacement plugs, or customised branding for OEM/private label orders

Handling & Precautions

• Handle with care to avoid mechanical shock or impact.
• Avoid overtightening; use only gentle rotational force.
• Clean using non-abrasive lab detergents and rinse with distilled water.
• Suitable for autoclaving—avoid exposure to direct flames or sudden temperature changes.
• Apply appropriate lubricant when needed for smooth rotation.
• Store in padded trays or glassware racks to prevent chipping or breakage.

Applications

• Analytical Laboratories: Liquid transfer, controlled dispensing, and reagent routing.
• Pharmaceutical & Biotechnology Labs: QC/QA processes, assay preparation, and sterile workflows.
• Chemical & Petrochemical Industries: Transfer control in pilot plants and R&D facilities.
• Academic & Research Institutions: Teaching labs, experimental setups, and routine analysis.
• Environmental, Food & Water Testing Labs: Precise handling during sample preparation and titrations.

The right-angle design makes it especially valuable in systems requiring compact routing or directional redirection of liquids.