Description
Return valve (AL2O3) is a laboratory dispenser return-path valve featuring a valve seat and ball of high-purity ceramic (AL2O3 99,7%) together with a Hastelloy spring. It is used on the return side of bottle-top dispensers and related volumetric liquid-handling systems where ceramic contact surfaces and a corrosion-resistant spring are specified. High-purity AL2O3 seat and ball components provide chemical resistance suited to many laboratory reagents, while the Hastelloy spring supports durable mechanical response during repeated cycling. This return valve from manufacturer Hirschmann is intended for opus®, ceramus®, solarus® and ceramus® HF instruments. Offered as one piece, it functions as a replacement or service part that restores the original AL2O3 seat/ball and Hastelloy spring configuration on compatible assemblies. Using the correct return-valve materials helps maintain sealing integrity, return-flow behaviour and chemical compatibility when laboratories service volumetric dispensers in analytical, quality-control and general research environments.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Return valve
- Valve seat/ball: High-purity ceramic (AL2O3 99,7%)
- Spring material: Hastelloy
- Compatibility: opus®, ceramus®, solarus® & ceramus® HF
- EAN: 4049338032648
- Technical Information Sheet:
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Questions about RECIRCULATION VALVE (AL2O3)
What is this article?
RECIRCULATION VALVE (AL2O3) is the article on this page. Luminix Health distributes Hirschmann 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.
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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.