The PTFE spindle valve is used for airtight sealing of a desiccator.– Large grinding opening of the spindle valve allows a fast inflow of gases or air – Tight closure due to standard ground joint – For lid outlets of NOVUS type desiccator (standard ground joint NS 24/29) – – The PTFE spindle valve is used for airtight sealing of a desiccator.– Large grinding opening of the spindle valve allows a fast inflow of gases or air – Tight closure due to standard ground joint – For lid outlets of NOVUS type desiccator (standard ground joint NS 24/29) – –