Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S
SUS304 stainless variant (-S)The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S is a genuine branch y for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeBranch Y
- SeriesPYB
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S
The PYB402D-S is an AirTAC PYB branch Y one-touch fitting in the black (D) finish with SUS304 trim. It brings two Dia 4 mm tube runs together into a single 1/4 in PT male thread, so one port on a manifold or valve can feed - or collect from - two separate 4 mm lines without a junction block. Push each tube home and the internal chuck grips the OD; press the release ring and the tube frees again. This is the resin profile: 0 to 1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure, -20 to +70 C, for soft nylon or polyurethane tubing only.
Note what the suffixes really do here. On PC and POC connectors the D changes only the release button, but on the PYB family it recolours the whole PBT body to black - useful in dark enclosures where grey parts disappear against the panel. On this -S version the stud is stainless steel 304 while the body remains PBT, so the thread side gains corrosion resistance without changing any pressure, vacuum or temperature figure.
Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S |
|---|---|
| Type | Branch Y |
| Series | PYB |
| 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.
Model Code: Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S
| PYB | Branch Y. |
|---|---|
| 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. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S Is Used
PCB router vacuum pickup
Converging the twin 4 mm suction runs from a two-nozzle dust pickup head on a CNC PCB router into the single 1/4 in port of a vacuum ejector, which holds to the -750 mmHg end of this fitting's range.
Rotary indexing table grippers
Splitting one 1/4 in manifold feed on an eight-station rotary indexing table out to the paired 4 mm supply lines of two small gripper cylinders, saving a junction block inside the rotating turret.
Lab autosampler rinse jets
Feeding two 4 mm polyurethane rinse-jet lines from a single 1/4 in solenoid output on a benchtop analytical autosampler, where the small Dia 4 bore keeps purge volume low.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S the Right Part?
Dia 4 is the smallest tube in the PYB ladder, so there is no step down - this is where you land when a 6 mm line would be oversized for a small gripper or sensor jet. Stepping up, PYB602 gives you Dia 6 tube on the same 1/4 in thread and the larger bore feeds more air per metre of run. If the tube stays at 4 mm but your port is smaller, PYB401 puts the same tube on a 1/8 in PT thread instead. Whichever way you go, the tube OD must match the fitting exactly: a Dia 4 Y will not seal on 5/32 in or 6 mm tube, and the 1/4 in thread here is PT throughout - AirTAC publishes no G or NPT variant in this catalogue.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
Airtac PYB Y-Type Threaded Tee Fitting PYB402D-S FAQ
It is an AirTAC PYB branch Y one-touch fitting joining Dia 4 mm tube (two tube ends) to a 1/4 in PT male thread. Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. It is the resin spec profile, for soft nylon or polyurethane tubing, and the -S version adds a SUS304 stud over the standard black PBT body.
No. On PYB-family -S parts AirTAC makes the stud SUS304 while the body stays PBT - in this case in black, since the D suffix recolours the whole body. Only the PC and POC straight connectors get a solid 304 body. The pressure, vacuum and temperature ratings are identical to the standard PYB402D, and the tube ends still require soft nylon or polyurethane tubing of exactly Dia 4 mm.
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