Description
KF connector DN 25 KF - 1/4 PP is a laboratory vacuum fitting that links a DN 25 KF (NW) flange interface to a 1/4 connection in polypropylene (PP). It serves vacuum and laboratory gas-line builds in which a larger DN 25 KF port must transition to a compact 1/4 side. The polypropylene body keeps the fitting light and resistant to many common laboratory chemicals, making it practical for general bench vacuum systems. DN 25 KF follows the established small-flange standard used on pumps, chambers and manifolds, while the 1/4 end accommodates typical lab tubing or adapter hardware. Supplied by manufacturer WELCH as 1 piece, the connector fits laboratory-material inventories focused on KF-based vacuum plumbing. Choose this DN 25 KF to 1/4 PP transition when a non-metallic coupling is preferred for teaching labs, research setups or routine analytical vacuum lines that need a reliable flange-to-1/4 interface without added metal components.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: KF connector
- KF size: DN 25 KF
- Connection: 1/4
- Material: PP
- Technical Information Sheet:
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Questions about KF connector DN 25 KF - 1/4 PP
What is this article?
KF connector DN 25 KF - 1/4 PP is the article on this page. Luminix Health distributes WELCH for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
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 Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, 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.