Union Tee is a kind of most generally used pneumatic fittings and push in fittings. Union Tee connects three tubings of equal ΦD at a 90° angle. Accommodates metric tubing O.D ranging from 4mm to 16mm, inch tubing O.D ranging from 1/8" to 1/2".
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| Metric Tube ØD |
| 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 12mm | 14mm | 15mm | 16mm |
| Inch Tube ØD |
| 1/8" | 5/32" | 3/16" | 1/4" | 5/16" | 3/8" | 1/2" |
| Metric Tube (mm) | |
| Part No. | Tube ΦD |
| PE 04 | 4mm |
| PE 05 | 5mm |
| PE 06 | 6mm |
| PE 07 | 7mm |
| PE 08 | 8mm |
| PE 09 | 9mm |
| PE 10 | 10mm |
| PE 12 | 12mm |
| PE 14 | 14mm |
| PE 15 | 15mm |
| PE 16 | 16mm |
| Inch Tube (inch) | |
| Part No. | Tube ΦD |
| PE 1/8 | 1/8" |
| PE 5/32 | 5/32" |
| PE 3/16 | 3/16" |
| PE 1/4 | 1/4" |
| PE 5/16 | 5/16" |
| PE 3/8 | 3/8" |
| PE 1/2 | 1/2" |