General Glassware DURAN® Stopcock, with PTFE Spindle, for desiccator base side outlets NS 24/29


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  • Manufactured from borosilicate glass 3.3
  • Tight closure due to standard ground joint
  • For base side outlets of NOVUS type desiccator (standard ground joint NS 24/29)
  • With PTFE spindel

Product Overview

The PTFE spindle valve is used for airtight sealing of a desiccator. For this purpose, the spindle tap is connected to the standard ground joint of the desiccator cover. The large opening in the grinding area of the spindle valve allows a fast inflow of gases or air when the valve is opened.


Length l (mm)= 85
Boro 3.3 =Borosilicate glass 3.3 has a very good chemical resistance, virtual inert behavior, a high maximum usage temperature, high light transparency and minimal thermal expansion. Borosilicate glass 3.3 has a linear coefficient of expansion of 3.3 × 10−6 K−1 at 20 °C. It also conforms to the requirements of a USP/EP/JP Type 1 neutral glass suitable for use by the pharmaceutical industry. The properties of DURAN® are specified to ISO 3585 and ASTM-E438 Type 1 Class A.
Diameter d (mm)= 8
Diameter (mm)= 8
Nominal Size (NS)= 24/29
Material =BORO 3.3, PTFE
Length (mm)= 85
Autoclavable= Yes
Quantity= 1

Available Options

2479904Stopcock with PTFE SpindleRM339.00
2479803Stopcock with PTFE SpindleRM378.60