Description
Bag cock according to Schiff NS 29,2 is a precision glass stopcock for controlled liquid and gas handling in laboratory glassware systems. It features a hollow NS glass plug and a 10 mm bore, combining free flow with a secure conical-joint seal. Overall dimensions are 18 × 120 mm; the unit is supplied as one piece with a net weight of 0,166 kg. This Schiff-pattern bag cock from manufacturer Witeg is designed for standard ground joints of size NS 29,2 and integrates directly into vacuum lines, distillation apparatus, gas manifolds and general transfer setups. All-glass construction provides compatibility with common laboratory chemicals and solvents, while the hollow plug ensures smooth rotation and consistent seating under repeated use. Ideal for research, analytical and quality-control environments, it serves as a shut-off or regulating valve wherever a robust NS joint connection is needed. The larger bore and compact form factor make it practical for modular glass assemblies that must be dismantled, cleaned and reassembled frequently without loss of sealing performance.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: Bag cock according to Schiff
- Joint size: NS 29,2
- Plug: Hollow NS glass plug
- Bore diameter: 10 mm
- Dimensions: 18 x 120 mm
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Questions about Bag-stopcock, Schiff, ST 29,2
What is this article?
Bag-stopcock, Schiff, ST 29,2 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.
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.