Description
Elbow (90°), stainless steel, DN 40 KF is a right-angle vacuum fitting for DN 40 KF flange systems used in laboratory and technical vacuum installations. The 90° bend redirects flow paths between pumps, chambers, traps and instruments while preserving the DN 40 KF sealing interface familiar to modular vacuum assemblies. Stainless steel construction provides durability and resistance under typical laboratory vacuum and gas-handling conditions, supporting repeated assembly cycles with standard KF clamps and centring rings. The larger DN 40 size suits higher-conductance sections of a vacuum line where unrestricted routing around equipment is needed. This elbow is supplied as a single piece from manufacturer WELCH within the accessories and spare-parts category for laboratory devices. It integrates into existing KF manifolds, pump connections and instrument ports that share the DN 40 KF standard, enabling compact layouts without custom welding or permanent pipework. Ideal for reconfiguration, maintenance and expansion of KF-based vacuum trains, the component is packed as one piece for clear inventory control and direct replacement of worn or missing fittings.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: 90° elbow fitting
- Material: Stainless steel
- Nominal diameter: DN 40 KF
- Flange standard: KF (small flange)
- Angle: 90°
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Questions about Elbow (90°), Stainless Steel, DN 40 KF
What is this article?
Elbow (90°), Stainless Steel, DN 40 KF 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.