Description
DURAN® straight stopcock with taper 1:5 and PTFE key, complete, is a precision laboratory glass component engineered for reliable, grease-free flow control. This unit features a 4 mm bore and NS 18,2 joint size, fabricated from durable borosilicate glass 3.3. The polished PTFE key surface permits clean operation without lubricants, while the three-part retainer securely holds the key within the barrel. Its steeper 1:5 taper angle effectively prevents jamming during use. Particularly well suited to vacuum applications and integration into custom glass apparatus, the stopcock supports further processing and assembly in laboratory setups. Offered as a complete single-piece unit with a net weight of 0,055 kg from manufacturer Duran/DWK Life Sciences, it delivers consistent performance where contamination-free sealing and dependable shut-off are required. Ideal for constructing or modifying glassware systems in research, analytical and process environments that demand robust, reusable stopcocks under both atmospheric and reduced-pressure conditions.
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: 4 mm
- Joint size: NS 18,2
- EAN: 4032051055933
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about DURAN® Single Way Stopcock, Taper 1:5, with PTFE key, complete
What is this article?
DURAN® Single Way Stopcock, Taper 1:5, with PTFE key, complete 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.