Airtac PYB Y-Type Threaded Tee Fitting PYB402
The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB402 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
The PYB402 is an AirTAC PYB branch Y, a resin one-touch fitting whose 1/4in PT male thread feeds a single port and splits the flow into two Dia 4 mm tube outlets set at a Y angle. To connect, push each tube straight into its socket until it bottoms out; the internal chuck grips the OD, the stainless spring gasket seals, and pressing the release ring frees the tube again.
This is the resin and brass profile, not the metal BP line: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a temperature window of -20 to +70 C. The PBT body carries factory-applied thread sealant, the chuck and release button are POM, and the gripped O-ring is NBR. A D suffix would turn the whole body black, whereas on the PC and POC straights the D only changes the release button - a detail worth knowing if you are colour-matching a panel.
Airtac PYB Y-Type Threaded Tee Fitting PYB402 Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB402 |
|---|---|
| Type | Branch Y |
| Series | PYB |
| Connection | Push-in one-touch |
| 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. 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
| 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. |
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 Is Used
Pick-and-place gripper feed
On a small SCARA or delta pick-and-place head, one 1/4in valve outlet can be split at the PYB402 into two Dia 4 lines serving a pair of mini grippers, saving a separate tee and a port on an already crowded manifold.
Laboratory dispensing fixture
A bench-top dosing or sample-handling station running Dia 4 PU tubing at low pressure can branch one regulated supply to two actuator or ejector lines from a single Y, keeping the pneumatic path short and easy to purge.
Compact packaging machine routing
Inside a tight guarding envelope on a small cartoning or labelling machine, the angled Y body lets two Dia 4 runs leave one 1/4in port in diverging directions, avoiding the sharp tube bends a tee would force.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB402 the Right Part?
Dia 4 is the smallest tube size the PYB family is made in at all, so there is no step down; if you need more bore in the same 1/4in thread, the next part up is PYB602 for Dia 6 tube. Note also that the thread ladder has a ceiling at this bore: PYB in 3/8in thread starts at Dia 6, so a 3/8in port cannot be paired with Dia 4 tube anywhere in the family. For a 1/8in port instead, PYB401 covers the same Dia 4 tube. Step from 4 to 6 mm and you gain flow headroom through a wider bore, at the cost of a stiffer tube and a slightly larger bend radius.
Two sizing checks before ordering: the port must accept a 1/4in PT male thread with sealant (an M5 port would need the gasket-sealed M5 version instead), and the tube must be exactly 4 mm OD in soft nylon or polyurethane - a fitting this size will not seal on 1/4in (6.35 mm) imperial tube, and there is no imperial equivalent 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 PYB402 FAQ
Tube size Dia 4 mm on two outlets, thread 1/4in PT male, resin one-touch branch Y. 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. Applicable tubing is soft nylon or polyurethane in exactly 4 mm OD; the grey body is PBT with thread sealant factory-applied, and the O-ring is NBR.
Neither. In the PYB family, 3/8in thread is only offered from Dia 6 tube upward, so no Dia 4 / 3/8in part exists - the nearest alternative at this bore is PYB401 on a 1/8in thread or PYB602 with Dia 6 tube on the same 1/4in thread. And the Dia 4 sockets grip only 4 mm OD soft nylon or PU tube; 1/4in (6.35 mm) imperial tube has no match in this catalogue and will not seal.
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