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The Festo QSK-4 is a straight tube-to-tube pneumatic adaptor used to connect two 4 mm air lines directly. It is designed for quick installation in compressed air systems that require clean, reliable connections without tools or extra fittings. This adaptor is typically used in control panels, automation equipment, and compact pneumatic assemblies where space is limited and fast assembly matters.
Both ends of the QSK-4 use push-in connections. You simply insert the 4 mm tubing until it locks in place. The internal gripping mechanism holds the tube securely while maintaining an airtight seal.
The adaptor is built with durable materials designed for long-term use in compressed air environments. It handles normal operating pressures without leaking and maintains its grip even with vibration or repeated use. Its straight design keeps airflow unrestricted, helping maintain consistent air delivery through the line.
It is often chosen for clean, organised pneumatic layouts where reliability is more important than complexity.
For more information please check the datasheets.
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