
SMC KQ2D0400A (KQ2D04-00A) - One-Touch Fitting Delta Union, Ø4 mm Tube O.D., Delta Union
SMC KQ2D0400A One-Touch Fitting Delta Union — Ø4 tube delta union, threadless tube-to-tube branch. Ø4 mm applicable tubing O.D., delta union body, threadless tube-to-tube connection, usable in vacuum to -100 kPa.
MPN: KQ2D04-00A · SKU: KQ2D0400A
KQ2D04-00A Applications
The SMC KQ2D0400A is a Ø4 tube delta union, so it branches three equal-diameter tubes without any threaded port. It is used in compressed air distribution on packaging lines, assembly automation cells, and machine-tool pneumatics. It is suited for splitting a single air feed to twin actuators, adding a pilot-pressure tap to an existing run, and re-routing tubing inside crowded control panels. Because the delta body keeps all three legs on one compact plane, it saves considerable space compared with stacking separate tees.
KQ2D04-00A Specifications
| Brand | SMC | Manufacturer Part No. | KQ2D04-00A |
| Product Type | One-Touch Fitting Delta Union | Series | KQ2 |
| Applicable Tubing O.D. | Ø4 mm | Connection Thread | None (tube-to-tube delta union) |
| Body Style | Delta union | Tubing Size Type | Metric size, round type |
| Vacuum Operating Range | To -100 kPa | Made to Order | Standard |
KQ2D04-00A Datasheet & Manual
Download Datasheet & ManualSMC KQ2D0400A · PDF · Official SMC documentTrusted by




