Description
Straight-through valve stopcock, PRODURAN® is a precision laboratory valve with an adjustable passage of 0–2,5 mm for fine control of gases and liquids. A fine-thread spindle allows sensitive height adjustment of the valve opening, while thick-walled side arms make the unit suitable for high-vacuum service. Flowing media contact only DURAN® glass and PTFE, enabling grease-free operation. The composite construction of glass, metal and plastics yields a compact, easily dismantled valve; an anti-unscrew feature prevents complete withdrawal of the spindle and the adjustable pin extends service life. Produced by Duran/DWK Life Sciences from borosilicate glass 3.3, this PRODURAN® stopcock is intended for incorporation into glass apparatus, including Schlenk lines and vacuum–inert-gas manifolds. Net weight is 0,041 kg. It is ideal for dosing and regulating fluids under vacuum or inert conditions where clean, grease-free media paths and precise flow setting are required.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc(s)
- Storage temperature: Standard
- Material: Borosilicate glass 3.3
- Passage: 0–2,5 mm
- Design: Straight-through with fine-thread spindle
- EAN: 4032051044784
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Questions about Straight Valve, PRODURAN®
What is this article?
Straight Valve, PRODURAN® 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. Delivery across Europe, two to five days when in stock. 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.

