Description
Single way stopcocks, DURAN® with PTFE-cock, are precision glass components for controlled flow in laboratory apparatus. Specified for joint 12,5 with an 8 mm pipe diameter and a 2 mm bore, they enable reliable on/off regulation of liquids and gases in distillation, extraction and general glassware assemblies. The DURAN® glass body paired with a PTFE cock plug combines chemical resistance with smooth, low-friction operation across common laboratory media. These stopcocks integrate into modular jointed systems where a single-way valve is required on 8 mm tubing lines. Offered in a pack of 2 pc(s) from manufacturer DWK Life Sciences, they suit research, analytical and preparative setups that demand interchangeable glass stopcocks. Lightweight construction supports compact manifold and apparatus design without unnecessary bulk. Clear dimensional matching to joint 12,5 and the stated pipe and bore sizes helps ensure correct fit when assembling ground-joint glassware. Typical use includes building or servicing distillation trains, extraction lines and vacuum or inert-gas pathways in the laboratory.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 2 pc(s)
- Type: Single way stopcock
- Glass: DURAN®
- Cock: PTFE
- Joint size: 12,5
- Pipe diameter: 8 mm
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Questions about Single way stopcocks, DURAN®, PTFE-cock, for joint 12.5, pipe-Ø 8 mm
What is this article?
Single way stopcocks, DURAN®, PTFE-cock, for joint 12.5, pipe-Ø 8 mm 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.