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The LEGRIS 3166 04 56 is a push-to-connect plug-in reducer tube fitting designed to join two pneumatic or fluid lines of different outer diameters in a single inline connection. Constructed from nylon, the fitting accepts a 5/32-inch OD tube on the smaller end and a 1/4-inch OD tube on the larger end, with a rated working pressure of 290 psi. The push-in mechanism allows tool-free tube insertion and secure retention without additional fittings or sealants. This type of reducer is a standard component in compressed-air distribution lines, pneumatic control circuits, and low-pressure fluid handling systems.
This reducer fitting is suited for light industrial, HVAC pneumatic control, and general-purpose compressed-air applications where a quick inline size transition is required. It is commonly installed in instrument air lines, pneumatic actuator circuits, and OEM equipment assemblies. The nylon body makes it appropriate for dry or lubricated air service and compatible with many non-aggressive fluid media. Installers working in tight panel enclosures or machine frames benefit from the compact push-in design, which eliminates wrenching and reduces assembly time.
Designed as an OEM-style push-in reducer for pneumatic tubing systems using 5/32-inch and 1/4-inch OD tubing in compressed-air and low-pressure fluid service applications.
Depressurize and isolate the pneumatic line completely before removing or installing any push-in fitting. Ensure tube ends are cut cleanly and squarely with a proper tube cutter to achieve a leak-free seat. Verify that tubing OD dimensions match the fitting ports before insertion. Push-in fittings of this type are typically installed by pneumatic system technicians or industrial maintenance personnel following applicable shop air and instrumentation piping practices.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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