Description
High-vacuum straight-through valve, 0 – 8 mm, with PTFE spindle is a precision laboratory fitting for isolation and flow regulation in high-vacuum systems. The valve body is made of borosilicate glass 3.3 and incorporates a fine-thread PTFE spindle that allows continuous adjustment of the passage from 0 to 8 mm. Tube ends have an outer diameter of 11 mm for straightforward connection to standard glass tubing in vacuum manifolds and apparatus. With a net weight of only 0,053 kg, the compact design integrates easily into complex glassware assemblies. Both the glass body and PTFE spindle provide chemical resistance suitable for solvents and reagents while avoiding grease contamination. This high-vacuum straight-through valve from manufacturer Rettberg is intended for distillation setups, Schlenk lines and analytical vacuum applications in research and industrial laboratories. The straight-through geometry minimises dead volume and pressure drop, supporting efficient performance under demanding vacuum conditions in chemistry and materials-science work.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Passage: 0 – 8 mm
- Tube outer diameter: 11 mm
- Body material: Borosilicate glass 3.3
- Spindle material: Polytetrafluoroethylene (PTFE)
- Technical Information Sheet:
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Questions about High vacuum valve, straight, 0 - 8 mm, with PTFE-spindle,
What is this article?
High vacuum valve, straight, 0 - 8 mm, with PTFE-spindle, 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.