Beschrijving
2-way stopcock with bent tube connectors NS 18,8 and 2,5 mm bore is a precision glass laboratory valve intended for controlled fluid routing in analytical and preparative environments. Equipped with a solid NS plug and threaded stopcock securing, it provides dependable sealing and consistent operation during frequent handling. The bent tube connectors measure 9 × 100 mm, facilitating neat connection into glassware manifolds and apparatus. Manufactured in accordance with DIN 12553, the stopcock maintains standardised geometry for interchangeability with matching laboratory joints. Net weight is 0,081 kg; the unit is offered as a single piece from manufacturer Witeg and is well suited to chemistry, biochemistry and general laboratory tasks requiring two-way flow control. The NS 18,8 ground-joint interface locks securely onto corresponding conical joints, while the 2,5 mm bore permits accurate metering of liquids and gases. Common uses include vacuum lines, distillation trains and reaction setups where reliable shut-off is required.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: 2-way stopcock
- Joint size: NS 18,8
- Bore diameter: 2,5 mm
- Tube dimensions: 9 × 100 mm
- Plug type: Solid NS plug with threaded securing
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Questions about Stopcock, double bore,
What is this article?
Stopcock, double bore, is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Kranen & ventielen, inside Slangen, leidingen & koppelingen, in Labmateriaal.
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 Slangen, leidingen & koppelingen. The sub-category is Kranen & ventielen. The catalogue is Labmateriaal.
Shelves beside this one are Slangverbinders, adapters & fittingen, PVC-, PTFE- & overige slangen, Siliconenslang and Slangaccessoires.
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. Articles in stock ship within 2–5 business days. 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.