Description
Straight-through high-vacuum valve with PTFE spindle, bore 0 - 3 mm is a precision adjustable laboratory valve for high-vacuum control in scientific glassware systems. The body is produced from borosilicate glass 3.3, providing high chemical resistance and thermal stability, while the spindle is manufactured from polytetrafluoroethylene (PTFE) to ensure smooth, chemically inert sealing and reliable shut-off. Tube connections have an outer diameter of 8 mm for straightforward integration into vacuum lines and apparatus. This compact component from manufacturer Rettberg allows continuous readjustment of the bore opening across the full 0 - 3 mm range, supporting fine flow regulation in distillation, vacuum transfer and analytical setups. With a net weight of only 0,031 kg the valve remains easy to handle and mount. The straight-through design maintains an unobstructed path when fully open, minimising pressure drop. Suitable for research laboratories, the combination of borosilicate glass 3.3 housing and PTFE spindle delivers durable performance under demanding vacuum conditions without additional coatings or seals.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Valves
- Bore: 0 - 3 mm
- Tube outer diameter: 8 mm
- Housing material: Borosilicate glass 3.3
- Spindle material: Polytetrafluoroethylene (PTFE)
- Technical Information Sheet:
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Questions about High vacuum valve, straight, PTFE-spindle, passage 0 - 3 mm,
What is this article?
High vacuum valve, straight, PTFE-spindle, passage 0 - 3 mm, is the article on this page. Luminix Health distributes Rettberg 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.