Description
2/2-way ball valve, manual on/off, DN 25 KF is a manual isolation valve for laboratory vacuum and process lines fitted with KF flanges at nominal diameter DN 25. As a two-port, two-position ball valve it delivers a simple open/close function for controlling flow or vacuum paths. Hand operation removes the need for electrical or pneumatic actuators, making the component practical for benches, pump skids and manifold sections where operators require direct local control. The DN 25 KF interface aligns with larger small-flange vacuum connections used on higher-conductance lines, fore-vacuum stages and central distribution points. Supplied as a single piece, the valve is positioned as an accessory or spare part for laboratory equipment. Manufacturer WELCH provides this manual on/off ball valve for integration into existing KF DN 25 assemblies. Typical use includes isolating sections of a vacuum system, protecting instruments during venting or maintenance, and enabling clear shut-off on research and analytical vacuum installations that standardise on the DN 25 KF flange format.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Valve type: 2/2-way ball valve
- Operation: Manual on/off
- Nominal diameter: DN 25
- Connection: KF flange
- Ports/positions: Two-port, two-position
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Questions about 2/2-Way Ball Valve, Manual On/Off, DN 25 KF
What is this article?
2/2-Way Ball Valve, Manual On/Off, DN 25 KF is the article on this page. Luminix Health distributes WELCH 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?
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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.