
The AirTAC Airtac PEB T-Shaped Straight Thread Tee Connector PEB401-S is a genuine male branch tee for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
The PEB401-S is an AirTAC PEB male branch tee in the SUS304 variant. It screws a 1/8in PT male thread into a port and offers two push-in outlets at 90 degrees, both sized for Dia 4 mm soft nylon or polyurethane tube. Push the tube home and the internal chuck grips it under system pressure; press the POM release ring and the tube frees off for re-routing. On this family the -S suffix means the male stud is stainless steel 304, while the tee body stays glass-reinforced PBT - so it is the stud thread that carries the corrosion resistance, not the whole part.
It runs on the resin one-touch spec profile: 0 to 1.0 MPa working pressure, 1.5 MPa proof pressure, -750 mmHg vacuum and -20 to +70 C. The 1/8in thread arrives with pre-applied sealant, so it seats straight into a PT-tapped port without extra tape. The release button, chuck and O-ring seal stay POM, aluminium and NBR exactly as on the standard PEB401 - the ratings and dimensions do not change with the -S suffix.
| Model | Airtac PEB T-Shaped Straight Thread Tee Connector PEB401-S |
|---|---|
| Type | Male branch tee |
| Series | PEB |
| Connection | Push-in one-touch |
| Body material | Stainless steel 304 (-S variant) |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. Stainless (-S): SUS304 in place of brass - a solid SUS304 body on the PC and POC straight connectors, and a PBT body with a SUS304 stud on the elbow, tee and branch shapes. Working pressure, proof pressure and temperature are unchanged from the standard version. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
| PEB | Male branch tee. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
| -S | Stainless-steel body. |
Tee a Dia 4 pilot line off a 1/8in valve port to feed a small signal cylinder or pressure switch, keeping the branch tap right at the port instead of cutting the main run.
Where plant air runs pass near splash zones, the SUS304 male stud resists surface corrosion that would pit a plain brass stud, while the PBT body shrugs off mild chemical wash.
Use the threaded leg on a filter-regulator outlet and push Dia 4 nylon tube to a gauge or low-flow indicator, branching instrumentation off without disturbing the main supply line.
Dia 4 is the smallest tube this family offers, and no 3.2 mm branch tee exists here - that size is reserved for the PC and PL mini lines only - so PEB401-S is the floor of the ladder. Step up to PEB601-S for Dia 6 tube when the branch needs more bore for a short run to a larger actuator. On the thread side you can step down to PEB4M5-S if the port is an M5x0.8 tapping (M5 still accepts Dia 4), or up to PEB402-S for a 1/4in port. Remember the tube OD must match exactly: a Dia 4 chuck will not seal on 1/8in (3.2 mm) Imperial tube.
Quick checklist
It is a male branch tee joining Dia 4 mm tube to a 1/8in PT male thread. Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, negative pressure -750 mmHg (10 Torr), operating temperature -20 to +70 C. The male stud is SUS304 on a PBT body; tubing is soft nylon or polyurethane. No flow value is published - capacity follows the Dia 4 bore.
No. On the PEB family the -S suffix means the male stud is SUS304; the tee body remains PBT and the seal stack stays POM, aluminium and NBR. Pressure, vacuum and temperature ratings are identical to the standard PEB401, and the dimensions are unchanged, so it drops into the same panel layout.
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