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The Festo HB-3/8-QS-10 is a pneumatic non-return valve used to control airflow direction in compressed air systems. It allows air to flow freely in a single direction while blocking it in the opposite one. This helps maintain pressure where needed and prevents unwanted backflow that can affect system performance. It operates within a pressure range of -1 to 10 bar, making it suitable for most standard industrial pneumatic applications.
This valve is typically installed in pneumatic lines where controlled airflow direction is required. Once air passes through in the allowed direction, the internal mechanism automatically closes if the flow attempts to reverse.
The valve comes with a 3/8-inch threaded connection and a QS-10 push-in fitting, making installation quick and straightforward. It fits cleanly into compact pneumatic layouts without requiring extra adapters or complex mounting steps.
It is often used as a small but essential part of larger pneumatic assemblies.
For more information please check the datasheets.
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