Beschrijving
Two-way stopcock (patent stopcock) PTFE, NS 18,8/4 mm with GL 14 connections is a laboratory valve for directing or isolating fluid streams in glass apparatus. Built with a PTFE stopcock and borosilicate glass 3.3 body, it delivers the chemical inertness and mechanical robustness needed for everyday laboratory service. The NS 18,8/4 mm ground joint mates with standard conical joints, and the GL 14 threaded ports accept compatible tubing or adapters without improvised fittings. Offered as a single piece with a net weight of 0,076 kg, the patent-style two-way design supports clear selection between flow paths and reliable shut-off. Applications include manifold work, sample routing, vacuum or inert-gas lines, and general reagent handling on the bench. This component from manufacturer Rettberg carries the Rettberg ® trademark and is manufactured in Germany for use with European laboratory glassware standards. It is suited to research, process development and teaching environments that require a durable two-way PTFE–glass stopcock with defined joint size and threaded connections for repeatable assembly.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Material: Borosilicate glass 3.3 / PTFE
- Joint size: NS 18,8/4 mm
- Connections: GL 14
- Product type: Valves
- Technical Information Sheet:
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Questions about Double oblique bore stopcock, PTFE plug size 18,8/4 mm,
What is this article?
Double oblique bore stopcock, PTFE plug size 18,8/4 mm, is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Kranen & ventielen, inside Slangen, leidingen & koppelingen, in Labmateriaal.
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 Slangen, leidingen & koppelingen. The sub-category is Kranen & ventielen. The catalogue is Labmateriaal.
Shelves beside this one are Slangverbinders, adapters & fittingen, PVC-, PTFE- & overige slangen, Siliconenslang and Slangaccessoires.
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.
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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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.