Description
3-way stopcock with NS plug and capillary joints 1,6 mm is a precision glass valve designed for controlled flow routing in laboratory apparatus. It features a T-bore configuration, solid NS plug and ground joint size NS 14,5, enabling reliable three-way switching of liquid or gas streams. Capillary side arms measure 8 × 100 mm with a bore of 1,6 mm, supporting low-volume connections typical of analytical and preparative setups. Manufactured to DIN 12554, the stopcock incorporates an oversized thread for secure seating of the plug. Supplied as a single piece with a net weight of 0,062 kg, this component from manufacturer Witeg is suited to vacuum lines, distillation trains and manifold systems where compact capillary geometry and reproducible sealing are required. The robust NS plug design minimises leakage paths while the standardised joint dimensions ensure interchangeability with common laboratory glassware. Ideal for chemistry, biochemistry and process-development laboratories needing durable three-way flow control.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: 3-way stopcock, T-bore
- Joint size: NS 14,5
- Bore diameter: 1,6 mm
- Capillary joints: 8 × 100 mm
- Plug: solid NS plug
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Questions about Stopcock, three way, Cap. 1,6 mm
What is this article?
Stopcock, three way, Cap. 1,6 mm is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Stopcocks & valves, inside Tubing, hoses & fittings, in Labware.
A stopcock opens and closes a line, or directs it between ports. Glass stopcocks have a ground plug that needs grease or a PTFE key. The bore decides the flow. A two-way and a three-way key are different parts.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Stopcocks & valves. The catalogue is Labware.
Shelves beside this one are Hose connectors, adapters & fittings, PVC, PTFE & other tubing, Silicone tubing and Tubing accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

