Description
3-Way stopcock with solid NS plug NS 18,8 provides a robust laboratory valve solution for directing fluids through three pathways in glass apparatus. Equipped with a T-bore, solid ground-joint plug and bent tube connection, it allows clear selection between flow routes while maintaining a secure seal. The 2,5 mm bore accommodates moderate throughput, and the over-rotation-proof threaded stopcock lock keeps the plug firmly positioned during adjustment. Built to DIN 12554 in the 9 × 100 mm size, this component from manufacturer Witeg matches standard NS 18,8 conical joints commonly used in preparative and analytical glassware. The solid NS plug delivers consistent sealing performance for vacuum work, inert-gas lines or liquid transfer manifolds. It is well suited to synthesis setups, distillation systems and general laboratory fluid control where a durable three-way stopcock is needed. Each unit has a net weight of 0,082 kg and is supplied as a single piece for easy incorporation into existing assemblies. Precise ground surfaces and the threaded lock contribute to reliable, repeatable operation under routine laboratory conditions.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Joint size: NS 18,8
- Bore diameter: 2,5 mm
- Bore type: T-bore
- Plug type: Solid NS plug with bent tube connection
- Standard: DIN 12554
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Questions about Stopcock, three way, solid plug
What is this article?
Stopcock, three way, solid plug 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.