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The LEGRIS 3171 04 20 is a push-to-connect tube fitting connector designed for compressed air and fluid control lines in light industrial and instrumentation applications. The body is nickel-plated brass, which provides corrosion resistance in moderate-duty environments. It accepts 5/32 inch outside diameter tubing and threads into a 10-32 UNF port. Rated to 290 psi maximum working pressure, this fitting handles a wide service temperature range from -4 degrees F to 175 degrees F. Licensed HVAC technicians, instrumentation techs, and maintenance professionals install this type of fitting when connecting small-bore tubing to ported manifolds, solenoid valves, or control devices.
This connector fits installations where 10-32 UNF threaded ports are the standard interface, such as pneumatic control panels, low-pressure instrumentation tubing runs, and compact manifold assemblies. The push-to-connect design allows fast, tool-free tube insertion and secure retention without ferrules or compression sleeves. It is well suited to residential and light commercial control systems where small-diameter tubing connects sensors, actuators, or pressure-monitoring devices to threaded ports.
Designed for use with 5/32 inch OD tubing in systems with 10-32 UNF threaded ports. Suitable for compressed air, pneumatic control, and compatible low-pressure fluid lines within the rated pressure and temperature limits.
Shut off system pressure and verify lines are depressurized before removing or installing any push-to-connect fitting. Hand-tighten the threaded end into the port and apply a thread sealant appropriate for the service fluid if required. Cut tubing square and free of burrs before inserting into the collet to ensure a leak-free connection. Installation should follow applicable pneumatic system codes and the equipment manufacturer's torque guidance for the 10-32 UNF port material.
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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