
Metric Dimension
| Model | H1 Tube Size  | H2 Tube Size  | A | B | C | D | E | G1 | G2 | P |   Effective Area (mm2)  | Weight (g)  | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UTD6-4 | 6 | 4 | 41.6 | 16 | 8 | 20.1 | 12.5 | 17.3 | 15.6 | 3.2 | 4.2 | 11.1 | 
| UTD8-6 | 8 | 6 | 45.4 | 18 | 9 | 23.1 | 15 | 18.3 | 17.5 | 3.2 | 10.3 | 15.1 | 
| UTD10-8 | 10 | 8 | 53.2 | 24 | 12 | 25.9 | 17.6 | 21.2 | 18.8 | 4.2 | 19.6 | 24.1 | 
| UTD12-10 | 12 | 10 | 60 | 28 | 14 | 30 | 21 | 23.6 | 21.2 | 4.2 | 32.5 | 35.1 | 
Q1: How does UTD differ from UT?
 A: UT is an equal-diameter tee. UTD is a reducing tee: the straight trunk stays equal while the side branch steps down (6→4, 8→6, 10→8, 12→10 mm).
Q2: Which tubing and sizes are supported?
 A: Metric PU and nylon (PA) tubing in the four step-down pairs listed above.
Q3: How do I select the model?
 A: Match the trunk OD and branch OD—for example, trunk 8 mm with branch 6 mm → UTD8-6. All three ports are push-to-connect (no threads).
Q4: Any installation tips?
 A: Cut the tube end square and deburr; insert fully to the stop and perform a light pull test. To remove, press the release ring evenly before pulling to protect the O-ring and collet.
Q5: Is it reusable?
 A: Reusable if the collet is undamaged; re-cut marred tube ends. If leakage or grip loss occurs, replace the entire fitting.
Q6: What operating range is supported?
 A: Reference 0–0.9 MPa and 5–60 °C. Avoid aggressive chemicals, prolonged oil immersion, or high-temperature service; verify compatibility for vacuum or special media.
Q7: Will pressure drop increase?
 A: Compared with a separate tee plus reducer, the straight trunk and short reducing branch typically yield fewer fittings and lower ΔP.
Q8: Can it interface with inch-size tubing or other sizes?
 A: The series is metric. For cross-size transitions outside the listed pairs, use a standard reducer union/adapter at the tube end before connecting to UTD.

