Description
3-Way stopcock Czako with bent tube connectors NS 18,8 is a laboratory glass stopcock conforming to DIN 12563 for multi-way flow control in cone-joint systems. Equipped with a solid NS plug and bent tube connectors measuring 10 × 110 cm together with a 4 mm bore, it offers a larger flow path for applications that require higher throughput while retaining the compact Czako layout. The NS 18,8 ground joint guarantees compatibility with standard laboratory glassware, and the solid plug delivers reliable sealing for everyday chemical work. Produced by manufacturer Witeg, this three-way valve is intended for synthesis manifolds, distillation trains and general fluid-handling assemblies where bent outlets simplify tubing layout. Delivered as one piece with a net weight of 0,106 kg, it fits modular glass apparatus used in research, process development and analytical laboratories. The defined bore and robust cone geometry support consistent direction switching and isolation without additional adapters when matched NS components are employed.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc(s)
- Joint size: NS 18,8
- Bore diameter: 4 mm
- Connector dimensions: 10 x 110 cm
- Plug type: Solid NS plug
- Standard: DIN 12563
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Questions about Stopcock, Czako. three-way, ST 18,8
What is this article?
Stopcock, Czako. three-way, ST 18,8 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. 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.