Beschrijving
Pressure relief/check valve with NS 19/26 and standard stopcock with 3 mm bore offers combined overpressure relief and check-valve performance for laboratory glassware assemblies. The relief function relies on a spring-loaded ball joint sealed by a higher-viscosity liquid that ensures leak-tight operation. Spring force is adjustable and the valve can be factory-preset and sealed if required. Maximum permissible overpressure is 0,1 bar. In check-valve mode the unit operates reliably under vacuum; an immersed riser tube stops sealing liquid from contaminating the process stream. When handling especially aggressive media the spring may be submerged under an inert liquid for extra chemical resistance. This single-piece component from manufacturer LAT connects via the NS 19/26 ground joint and includes a standard stopcock featuring a 3 mm bore. It is intended for distillation trains, reaction vessels and vacuum lines that need simultaneous pressure protection and reverse-flow prevention while maintaining clean process conditions.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Pressure relief/check valve
- Ground joint: NS 19/26
- Stopcock bore: 3 mm
- Maximum overpressure: 0,1 bar
- Spring pressure: Adjustable
- Technical Information Sheet:
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Questions about Non-Return Valves
What is this article?
Non-Return Valves is the article on this page. Luminix Health distributes LAT for laboratory use. It sits in Stopcocks & valves, inside Tubing, hoses & fittings, in Labmateriaal.
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 Labmateriaal.
Shelves beside this one are Hose connectors, adapters & fittings, PVC, PTFE & other tubing, Silicone tubing and Tubing accessories.
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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.
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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.