Quick Connectors
Check Valves - Blue Series
The check valves of Riegler's Blue Series allow compressed air to pass in one direction only and block the reverse direction. They are available as straight versions with thread-to-tube and tube-to-thread connection.
Male threads range from G 1/8 through G 3/8 to G 1/2 as well as R threads, for tube diameters of roughly 4 to 12 mm. They are used to prevent backflow, for example to hold pressure in a section of plant.
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Buying guide
How to choose Check Valves - Blue Series
What matters when choosing: properties, comparison and typical applications.
Function and Use
The straight check valve opens in the flow direction and blocks on pressure reversal. With thread-to-tube and tube-to-thread variants from G 1/8 to G 1/2 it prevents backflow in pneumatic lines and holds pressure in downstream sections.