Description
Straight-through valve stopcock Economy is a glass laboratory stopcock for controlled flow regulation in vacuum and fluid lines. Fabricated from DURAN tubing, it incorporates a PTFE spindle together with a sealing system and over-rotation protection to ensure smooth, secure operation and long service life. The adjustable bore ranges from 0 to 3 mm, allowing fine metering of gases or liquids in experimental setups, distillation apparatus and general laboratory manifolds. The straight-through design minimises dead volume and supports straightforward inline installation. Supplied as a single piece from manufacturer Witeg, this Economy model combines chemical resistance of borosilicate glass with the low-friction sealing characteristics of PTFE. Net weight is 0,024 kg. It is well suited to routine laboratory work where reliable shut-off and adjustable flow are needed without complex valve assemblies. Clear construction and robust spindle mechanics make it a practical component for teaching, research and quality-control glassware systems.
This article belongs on Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: Straight-through valve stopcock Economy
- Material: DURAN glass tubing
- Spindle: PTFE with sealing system
- Bore: 0 - 3 mm
- Protection: Over-rotation safeguard
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Questions about Needle valve ''Economy''
What is this article?
Needle valve ''Economy'' is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Stopcocks & valves, inside Tubing, hoses & fittings, in Matériel de laboratoire.
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 Matériel de laboratoire.
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.