Description
4-Way cross, aluminium, DN 40 KF is a vacuum-line fitting designed to join four KF flange ports in a compact cross configuration. Manufactured in aluminium and specified for the DN 40 KF (NW 40) flange standard, it supports modular assembly of laboratory and process vacuum manifolds where multiple branches must meet at a single node. The KF interface enables quick clamp connections with centring rings and clamps, simplifying installation, reconfiguration and maintenance of roughing and high-vacuum setups. Typical placements include pump manifolds, gauge and valve branches, and multi-instrument sampling lines in analytical, materials and process laboratories. Offered as a single piece from manufacturer WELCH, the component fits established KF accessory ecosystems used with rotary vane, diaphragm and turbomolecular pump systems. Its aluminium construction keeps the fitting light while remaining suitable for common laboratory vacuum duties. Use this cross wherever a durable, space-efficient four-port KF junction is required for DN 40 aluminium vacuum plumbing.
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: Aluminium
- Flange size: DN 40 KF
- Connection standard: KF / NW
- Configuration: Four-port cross
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Questions about 4-Way Cross, Aluminium, DN 40 KF
What is this article?
4-Way Cross, Aluminium, 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 Matériel de laboratoire.
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 Matériel de laboratoire.
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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.