Airtac PYB Y-Type Threaded Tee Fitting PYB402-S
SUS304 stainless variant (-S)The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB402-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 PYB402-S
The PYB402-S is an AirTAC male branch Y from the one-touch fitting range. It carries Dia 4 mm soft nylon or polyurethane tubing on its push-in ports and screws into a 1/4in PT male thread. To make a joint you simply push the tube home: the internal chuck grips the OD, the stainless spring gasket and NBR O-ring seal it, and pressing the POM release ring frees the tube again. As a resin-line part it is rated 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure and -20 to +70 C.
The trailing -S marks the SUS304 variant, and it matters where you look: on this family the body stays glass-fibre PBT while the male STUD is the SUS304 part. That makes the thread-side hardware the corrosion-resistant element for wash-down frames and humid plant air, without changing a single pressure or temperature figure from the standard PYB402. AirTAC publishes no separate rating for the stainless line, so this part is dimensionally and functionally interchangeable with its grey counterpart.
Airtac PYB Y-Type Threaded Tee Fitting PYB402-S Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB402-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 PYB402-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 PYB402-S Is Used
Pick-and-place vacuum ejector feed
Branching a 1/4in supply at a compact gripper head so one leg feeds the ejector and the other feeds the gripper cylinder, with the 4 mm bore matched to small ejector nozzles.
Analyser cabinet sample-air split
The SUS304 stud resists corrosion in humid instrument enclosures, letting one PT-threaded port serve two 4 mm sample or purge lines inside a gas analyser cabinet.
Bottling line rinse-jet branch
Splitting a single threaded drop into two angled 4 mm air jets that blow caps and necks dry on a bottling conveyor, where a straight tee would clash with the guide rail.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB402-S the Right Part?
Dia 4 is the smallest tube bore AirTAC lists for PYB on a 1/4in thread, so there is no size below it - step sideways to PYB401 if you need the same 4 mm tube on a 1/8in port instead. Stepping up to PYB602 buys you a Dia 6 bore on the same 1/4in thread, which roughly doubles the flow path area for greedier actuators. Whatever you choose, the tube OD must match exactly: this fitting grips Dia 4 only and will not seal on 1/4in (6.35 mm) imperial tube, a mix-up that shows up surprisingly often in retrofit work.
Pick a branch Y rather than a run tee when the second leg should leave at an angle instead of straight across - it clears cylinder barrels and guard walls better. If you actually need a perpendicular branch, the PED run tee or PEB branch tee are the shapes to compare.
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 PYB402-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. This SKU joins Dia 4 mm soft nylon or polyurethane tube to a 1/4in PT male thread. The -S suffix adds a SUS304 stud over the PBT body but changes none of these figures.
No. On the PC and POC straight connectors the whole body becomes stainless steel 304, but on the PYB branch Y family only the male stud is SUS304 while the body remains PBT. Ratings, dimensions and the push-in mechanism are identical to the standard PYB402, so you gain thread-side corrosion resistance, not a re-rated part.
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