Description
Replacement PTFE spindle 3 mm is a laboratory spare part for stopcock assemblies, supplied with a 3 mm bore and an integrated safety screw. Manufactured from PTFE, the spindle is intended as a direct replacement component for Witaflo red stopcocks used in fluid-handling glassware. The defined bore diameter ensures dimensional match with the corresponding stopcock specification, while the safety screw secures the spindle in position during routine laboratory operation. PTFE construction suits chemically demanding environments typical of analytical, preparative and teaching laboratories. The part is offered as a single piece with a net weight of 0,012 kg, making it straightforward to stock and install during maintenance of existing stopcock systems. This replacement spindle from manufacturer Witeg belongs to the stopcock-plug category and supports continued serviceability of Witaflo red fittings without changing the original assembly geometry. Laboratories that rely on PTFE stopcock components for controlled liquid transfer will find this 3 mm spindle a practical maintenance item for restoring function when the original spindle is worn or damaged.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Material: PTFE
- Bore diameter: 3 mm
- Compatible with: Witaflo red
- Safety screw: yes
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Questions about Spare PTFE-needle valve 3 mm
What is this article?
Spare PTFE-needle valve 3 mm is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Viscometers, inside Density & viscosity measurement, in Lab instruments.
A capillary viscometer times the flow of a liquid through a tube. A rotational viscometer twists a spindle in the liquid. Both need a stated temperature. Kinematic and dynamic viscosity are different numbers. The capillary size has to put the flow time in the range the method allows.
Density is mass divided by volume. A hydrometer floats at a depth that depends on the density of the liquid. A pycnometer is a vessel of known volume that is weighed full. Viscosity is the resistance to flow. A capillary viscometer times how long a volume takes to fall through a tube. Both measurements need a stated temperature, because liquids change density and viscosity as they warm. The units trace to the BIPM and to NIST.
Which category should I open next?
The category is Density & viscosity measurement. The sub-category is Viscometers. The catalogue is Lab instruments.
Shelves beside this one are Hydrometers and Density meters & pycnometers.
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