Description
DURAN® straight stopcock, ground and polished, without key is a precision borosilicate glass 3.3 component for laboratory glass apparatus. It features a 6 mm bore and NS 21,5 joint size with a 1:10 taper, supplied as a single piece ready for further processing. The ground and polished surface is designed for combination with a PTFE key, enabling reliable grease-free flow control in chemical setups. This stopcock body supports clean shut-off and routing of liquids or gases without lubricant contamination, making it suitable for distillation, vacuum lines, reaction vessels and custom glass assemblies. Manufactured from chemically resistant borosilicate glass 3.3, the article offers the dimensional accuracy and surface finish expected of DURAN® laboratory glassware from Duran/DWK Life Sciences. Net weight is 0,055 kg. Typical use is incorporation into glass apparatus and devices where a durable, polished one-way stopcock without key is required for subsequent fitting of a PTFE plug. The straight configuration simplifies integration into standard laboratory systems needing precise, fat-free operation.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Material: Borosilicate glass 3.3
- Bore diameter: 6 mm
- Joint size: NS 21,5
- EAN: 4032051055216
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Questions about DURAN® Single Way Stopcock, ground and polished,, without key
What is this article?
DURAN® Single Way Stopcock, ground and polished,, without key is the article on this page. Luminix Health distributes DWK Life Sciences 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.