Description
Straight-through vacuum valve with 0–4 mm passage is a precision stopcock for laboratory vacuum and inert-gas lines. The body is manufactured from borosilicate glass 3.3, while the adjustable spindle is made of PTFE, combining chemical resistance with fine control of gas or vacuum flow. The straight-through design minimises dead volume and supports smooth integration into Schlenk manifolds, reaction setups and distillation trains. The PTFE spindle is readjustable, allowing reliable sealing performance to be maintained over repeated open–close cycles without glass-to-glass seizure. Supplied as a single piece with a net weight of 0,033 kg, the valve is compact enough for crowded bench assemblies yet robust for routine synthetic work. This valve from manufacturer Rettberg is intended for applications requiring controlled isolation or metering of vacuum and inert atmospheres in research and teaching laboratories. Suitable wherever a glass–PTFE vacuum valve with a defined 0–4 mm orifice is specified for Schlenk or general vacuum apparatus.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Passage: 0 - 4 mm
- Spindle material: PTFE
- Body material: Borosilicate glass 3.3
- Design: Straight-through, adjustable
- Technical Information Sheet:
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Questions about Vacuum-valve, straight, 0 - 4 mm, PTFE-spindle, adjustable
What is this article?
Vacuum-valve, straight, 0 - 4 mm, PTFE-spindle, adjustable 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.