Disposable tap with glass plug, PTFE & hollow plug - borosilicate glass 3.3

The one-way stopcock with flexible tube is a precision laboratory valve made of high-quality borosilicate glass 3.3, designed for controlled flow regulation in various laboratory chemical applications. The product is available in three different plug configurations to meet specific requirements for precision, chemical resistance, and application.

basic construction

• Material: Borosilicate glass 3.3 according to DIN ISO 3585
  
• Design: With bent pipe fittings
  
• Design: One-way valve with precise flow control
  
• Safety: Variants with a safety lock to prevent accidental removal of the tap.

Available plug varieties

Solid glass plug

• Precise dosing through ground glass plug
  
• High chemical resistance
  
• With integrated cockchafer safety device
  
• Ideal for demanding distillation and synthesis setups

PTFE plug

• Excellent chemical resistance to aggressive media
  
• No greasing required
  
• Low wear and long service life
  
• Suitable for corrosive substances and organic solvents

Hollow glass plug

• Reduced weight with the same precision
  
• Optimized for specific laboratory applications
  
• With rooster plug protection
  
• Suitable for controlled flow rates

Available standard grinding sizes and bores

The product is available in various standard ground joint (NS) sizes and bore diameters to meet different laboratory requirements. The variants can be selected according to your needs when ordering.

Application areas

• Distillation and synthesis setups
  
• Controlled liquid dosing
  
• Chemical processes in the laboratory
  
• Connection of glass apparatus
  
• Structures with aggressive or corrosive media (PTFE plug)
  
• Precise flow control in analytical chemistry

Selection aid

• Solid glass plug: Universally applicable, highest precision
  
• PTFE plugs: For aggressive chemicals, low maintenance, grease-free
  
• Hollow glass plugs: Weight-reduced, for special applications