Description
1-Way stopcock with bent tube connectors NS 29 is a laboratory glass stopcock engineered for reliable one-way flow control where a larger joint and bore are required. It combines an NS 29 ground joint with bent tube connectors and a 10 mm bore, allowing secure tubing connection and higher volumetric throughput for demanding laboratory applications. The NS-PTFE plug offers chemical resistance and smooth, low-friction operation for consistent sealing and shut-off. Manufactured to DIN 12541, the stopcock maintains standardized dimensions for interchangeability with matching glassware. Delivered as a single piece with a net weight of 0,202 kg, it is suitable for distillation trains, vacuum and gas lines, and manifold systems that benefit from a straightforward one-path valve. The bent tube ends simplify routing and help limit stress on connected tubing in compact setups. This stopcock from manufacturer Witeg supports routine work in research, quality-control and educational laboratories that need robust, interchangeable one-way glass valves with a larger NS 29 interface and 10 mm bore.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: 1-way stopcock with bent tube connectors
- Joint size: NS 29
- Bore: 10 mm
- Plug: NS-PTFE
- Standard: DIN 12541
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Questions about stopcock ST 29,2
What is this article?
stopcock ST 29,2 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.