Airtac PYB Y-Type Threaded Tee Fitting PYB401D
The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB401D 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 PYB401D
The PYB401D is an AirTAC PYB branch Y one-touch fitting: it splits a single 1/8in PT male port into two Dia 4mm tube lines at an angled branch, so flow divides gradually instead of turning a hard 90 degrees. Push each tube into its collet until it bottoms out and the internal chuck grips it; press the release ring to free it again. This is the black (D) version, and on the PYB series the D suffix changes the body itself, not just the button as it does on PC and POC connectors.
It belongs to the resin and brass one-touch profile, not the metal BPC 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 1/8in male thread arrives with sealant already applied, so it seals on the PT port without extra tape. Soft nylon or polyurethane tube with a true 4mm OD is required - anything else will not seat in the chuck.
Airtac PYB Y-Type Threaded Tee Fitting PYB401D Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB401D |
|---|---|
| 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 PYB401D
| 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 PYB401D Is Used
Splitting a solenoid output on a packaging machine
One 1/8in valve outlet on a small cartoner or blister sealer can feed two Dia 4 pilot lines - the Y divides the signal to a pair of cylinders that must stroke together.
Laboratory purge and vacuum manifolds
The -750 mmHg vacuum rating lets a benchtop analytical or sample-handling rig run a single 1/8in port out to two 4mm suction or purge legs without a separate junction block.
Twin suction-cup pick heads on compact gantries
A light pick-and-place gantry with two small cups can share one supply leg: the Y branches the Dia 4 run so both cups release in sync from a single valve channel.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB401D the Right Part?
Dia 4 is the smallest tube the PYB ladder offers (the 3.2mm size exists only on the PC and PL mini series), so there is nothing below this SKU - the next step up is PYB601 in Dia 6, which gives you bore for longer runs or two legs feeding a shared load. On the thread side, M5 (PYB40-M5) sits below and 1/4in (PYB402) above; move to 1/4in when the port is a larger valve manifold outlet and the 1/8in stud becomes the bottleneck. If you need a straight 90-degree branch rather than an angled Y, the PEB male branch tee is the alternative shape in the same size class.
Match the OD exactly: a Dia 4 fitting will not hold 5/32in or 1/4in tube, and a Dia 6 Y will not grip 4mm either. Thread it into the port hand-tight until the sealant takes up; AirTAC publishes no tightening torque for these parts, so do not guess one.
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 PYB401D FAQ
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), negative pressure is -750 mmHg (10 Torr), and proof pressure is 1.5 MPa. The operating temperature range is -20 to +70 C. This SKU accepts Dia 4mm soft nylon or polyurethane tube on both branch legs and screws into a 1/8in PT male port. It is a resin and brass one-touch part with the thread sealant pre-applied.
No. Both legs of this Y take the same Dia 4mm OD tube, and the OD must match exactly - the chuck grips one size only. If your two branches run different bores, use a different-diameter union Y from the PYW range instead, or step the line with a PG reducer ahead of the fitting.
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