Legris 3109 56 14 90° 1/4 MNPT × Tube PK10

What this fitting connects

This Legris 3109 56 14 elbow joins a 1/4 inch tube to a 1/4 inch male NPT thread at a 90 degree angle. It uses a push-to-connect end on the tube side and a pre-sealed threaded end on the port side. The pack contains ten black fittings made from fiberglass-reinforced nylon and metal. It is suited for vacuum and pneumatic lines in automotive and industrial maintenance.

Check your thread and tube specs

Verify that the port you are threading into accepts a 1/4 inch male NPT connection and that your tubing has a 1/4 inch outer diameter. The fitting relies on a push-fit seal for the tube and pre-applied thread sealant for the port, so both surfaces must be clean and undamaged. Confirm the system pressure will not exceed 290 psi and the temperature will stay below 175 degrees Fahrenheit. No additional sealant or tools are required for installation.

Behaviour under continuous pressure

The fiberglass-reinforced nylon body holds its shape at the rated 290 psi without creeping or cracking during extended duty cycles. The pre-applied thread sealant maintains a leak-free joint through thermal cycles up to 175 degrees Fahrenheit. Push-to-connect gripping teeth keep the tube secure under vibration and repeated pressure pulses. The 90 degree geometry does not introduce flow restriction beyond the normal elbow loss.