Description
DURAN® straight stopcock, ground, without key with NS 18,8 joint and 4 mm bore is a precision-engineered glass fitting intended for shut-off applications in laboratory glass systems. Crafted from durable borosilicate glass 3.3, the ground stopcock is delivered without the key (plug) and is designed for combination with compatible DURAN® stopcock plugs, including those with a groove, threaded variants or hollow plugs. The precision ground surface provides a tight seal once the appropriate plug is fitted. These straight stopcocks from manufacturer Duran/DWK Life Sciences are specifically conceived for use as shut-off cocks; for fine dosing applications, valve cocks are more suitable. Typical uses include the coarse dosing of liquids and incorporation into glass apparatus and laboratory equipment during further processing. The single-piece unit has a net weight of 0,035 kg and benefits from the excellent chemical resistance and thermal properties of borosilicate glass 3.3, making it a reliable choice for building custom glassware setups in analytical, research and process laboratories.
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
- Joint size: NS 18,8
- Bore diameter: 4 mm
- EAN: 4032051055483
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Questions about DURAN® Single Way Stopcock, ground, without key
What is this article?
DURAN® Single Way Stopcock, ground, 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.