Description
Pressure relief/check valve with cone NS 19/26 is a dual-function laboratory safety valve made from borosilicate glass 3.3. As a pressure relief valve it uses a spring-loaded ball joint, with a higher-viscosity sealing liquid ensuring a tight seal. Spring pressure is adjustable and the maximum overpressure is 0,1 bar. When employed as a check valve under vacuum, an integrated riser tube prevents contamination by the sealing liquid. For particularly aggressive media the spring can additionally be covered with an inert liquid. This glassware component from manufacturer Rettberg supports safe pressure management in laboratory setups that require both overpressure protection and backflow prevention. The NS 19/26 ground joint ensures compatibility with standard laboratory glass systems. Supplied as one piece with a net weight of 0,195 kg, it is well suited to chemical and research laboratories handling processes where controlled pressure relief and vacuum check functionality are essential for safe, reliable operation.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Joint size: NS 19/26
- Material: Borosilicate glass 3.3
- Product type: Safety valves
- Max. overpressure: 0,1 bar
- Technical Information Sheet:
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Questions about Safety / overpressure valve, cone size 19/26
What is this article?
Safety / overpressure valve, cone size 19/26 is the article on this page. Luminix Health distributes Rettberg 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.