Description
3-Way stopcock PTFE thread NS 29,2 is a laboratory glassware valve designed for multi-path fluid control in chemical and analytical apparatus. The T-bore configuration allows selective routing of liquids or gases, while the NS-PTFE plug and threaded stopcock lock maintain a secure seal under routine laboratory conditions. Bent tube connections are specified as 13 × 120 mm with an 8 mm bore, and the component conforms to DIN 12554 for standardized ground-joint compatibility. Offered by manufacturer Witeg as one piece with a net weight of 0,244 kg, this stopcock fits larger NS 29,2 joint systems commonly used in synthesis, distillation and process glassware. The PTFE plug provides an inert contact surface suitable for a broad range of solvents and reagents, and the threaded lock helps prevent accidental loosening during operation. It is intended for research, quality-control and production laboratories that need robust three-way flow switching with reliable sealing and standardized dimensions for apparatus assembly.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Joint size: NS 29,2
- Bore diameter: 8 mm
- Connection dimensions: 13 x 120 mm
- Design: T-bore with NS-PTFE plug
- Standard: DIN 12554
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Questions about Stopcock, three-way, ST 29,2
What is this article?
Stopcock, three-way, 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. 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.