Stopcock, PP/ PTFE

GISCOM Stopcocks (PP/PTFE) are precision-engineered laboratory valves designed to regulate, open, or stop the flow of liquids and gases in scientific and industrial systems. Built with a durable polypropylene body and a high-performance PTFE plug, these stopcocks deliver reliable, leakproof flow control even under demanding conditions. They are essential in laboratories, research facilities, and production environments where accuracy, chemical resistance, and long-term stability are critical.

Key Features

• Leakproof flow regulation using a chemically inert PTFE plug
• Serrated tubulations accept a wide range of flexible tubing (6–10 mm)
• Available in 2-way and 3-way configurations for versatile flow pathways
• High chemical and thermal resistance, suitable for routine and specialized applications
• Durable polypropylene body ensures structural strength and long service life
• Smooth, low-torque operation for easy opening/closing
• Lightweight, corrosion-free, and maintenance-friendly
• Ideal for both low-pressure and general-purpose laboratory setups

 Material Specifications

• Body Material: Polypropylene (PP) Rigid, tough, and autoclavable up to approx. 120°C. Excellent resistance to aqueous solutions, weak acids, and bases
• Plug Material: Polytetrafluoroethylene (PTFE) Outstanding chemical inertness; compatible with aggressive reagents. Very low friction coefficient for smooth operation. High thermal stability
• Manufacturing Standards: Produced under ISO-compliant quality systems (ISO 9001)
• Biocompatibility: Suitable for pharmaceutical, analytical, and research applications

Technical Specifications

Additional Technical Details

• Tubing Compatibility: Serrated connectors suitable for 6–10 mm ID tubing
• Design: Straight body with integrated PTFE plug for precision flow control
• Tolerance: Molded under controlled conditions for consistent dimensional accuracy
• Calibration: Not required
• Accessories: No additional accessories needed—ready to use

Handling & Precautions

• Ensure proper insertion of tubing over serrations for a secure, leakproof fit
• Do not use with excessive pressure or vacuum beyond standard laboratory limits
• Avoid exposure to strong oxidizing agents that may affect PP components
• Clean using mild detergents; avoid abrasive tools or harsh organic solvents
• Autoclave only within safe PP temperature limits (≤120°C)
• Do not overtighten the PTFE plug—light torque ensures smooth operation and long life
• Store in a cool, dry environment away from direct sunlight

 Applications

• Routine liquid and gas flow control in chemical, biological, analytical, and pharmaceutical laboratories
• Integration into filtration assemblies, fluid transfer lines, bench-scale reactors, and research setups
• Widely used in QC/QA labs, educational institutions, pilot plants, and production facilities
• Ideal for applications requiring contamination-free handling and precise flow direction, including buffer preparation, reagent distribution, titration setups, and controlled media flow