Description
Bag cock according to Schiff, NS 34,5 is a laboratory stopcock designed for controlled flow in glass apparatus assemblies. It features a hollow standard ground joint with a 12 mm bore and overall dimensions of 20 × 120 mm, providing a reliable seal for bag-type or flexible connection setups. The NS 34,5 joint size ensures compatibility with matching laboratory glassware used throughout chemical and research laboratories. This component from manufacturer Witeg is supplied as a single piece and has a net weight of 0,268 kg. It is well suited to analytical workflows, process setups and modular glass systems that require a precise shut-off or metering function via a Schiff-type bag cock. The hollow NS design supports efficient fluid handling while maintaining the integrity of the ground joint connection under typical laboratory conditions. Ideal for integration wherever a bag cock according to Schiff is specified among valves, conical stopcocks and related shut-off fittings in glass apparatus.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Ground joint: NS 34,5
- Bore: 12 mm
- Dimensions: 20 × 120 mm
- Design: Hollow NS
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Questions about Bag-stopcock, Schiff, ST 34,5
What is this article?
Bag-stopcock, Schiff, ST 34,5 is the article on this page. Luminix Health distributes Witeg 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.