Description
4-Way cross, stainless steel, DN 40 KF is a multi-port vacuum fitting intended for laboratory vacuum systems that use larger KF flanges. Four DN 40 KF ports meet at a cross junction, enabling compact branching or combining of vacuum lines, instruments, and pump connections without permanent welded assemblies. Stainless steel material suits everyday laboratory vacuum work where robust, cleanable metal components are required. The DN 40 KF geometry aligns with standard Klein-flange (ISO-KF) clamps, centering rings, and elastomer or metal seals commonly stocked for modular manifolds. Supplied as one piece from manufacturer WELCH, the cross belongs in accessory and spare-part ranges for laboratory equipment built around DN 40 KF hardware. It is useful for higher-conductance junctions on roughing or high-vacuum paths, gauge and instrument take-offs, and reconfigurable experimental setups in research, teaching, and technical environments. Install with matching DN 40 KF seals and clamps appropriate to the vacuum level and media. The design supports rapid manifold changes when methods or instruments are swapped.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: 4-way cross
- Material: Stainless steel
- Nominal size: DN 40 KF
- Connection standard: KF (ISO-KF)
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Questions about 4-Way Cross, Stainless Steel, DN 40 KF
What is this article?
4-Way Cross, 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.
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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.