Airtac PYB Y-Type Threaded Tee Fitting PYB401D-S
SUS304 stainless variant (-S)The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB401D-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 PYB401D-S
The PYB401D-S is an AirTAC one-touch male branch Y in the smallest tube size of the range: Dia 4 mm tubing on the two legs, feeding a male 1/8in PT stud. A Y takes one supply and splits it into two lines angled off a common stem, so a single drop can feed two actuators or a line plus a sensor without stacking tees.
The -S suffix means the stud is SUS304 stainless steel while the body stays glass-filled PBT, finished black because of the D suffix - unlike the D on PC and POC connectors, which only changes the release button. Ratings are unchanged from the standard resin line: 0-1.0 MPa working, 1.5 MPa proof, -20 to +70 C. To make a joint, push the tube in until it bottoms; the stainless spring gasket and chuck clamp it, and pressing the POM release ring frees it again. The 1/8in thread arrives with sealant applied.
Airtac PYB Y-Type Threaded Tee Fitting PYB401D-S Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB401D-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 PYB401D-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 PYB401D-S Is Used
Plating line rinse header
A single 1/8in drop beside an electroplating tank splits via the Y into two 4mm rinse nozzles; the SUS304 stud shrugs off the acid-laden mist that pits brass studs in months.
PCB pick-and-place vacuum head
On a small SMT placement head, the Y splits one -750 mmHg vacuum feed into two 4mm lines running to a pair of suction cups, replacing two separate fittings and a tee block.
Coastal packaging machine frame
Inside a salt-air-exposed wrapping machine, the Y-branch feeds two 4mm jet lines off one 1/8in PT port; the stainless stud resists the corrosion that the black PBT body is already immune to.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB401D-S the Right Part?
Dia 4 on a 1/8in thread sits at the bottom of the PYB ladder, but both neighbours exist in stainless: step down to M5 thread (PYB40M5-S) when the port is a small valve manifold, or up to 1/4in (PYB402-S) for a larger port. Staying on 1/8in and stepping the tube to Dia 6 (PYB601-S) doubles the bore for shorter runs with modest flow demand - capacity scales with the tube, not the fitting. Remember the OD must match exactly: a Dia 4 chuck will not grip 5/32in tube even though the numbers look close.
A Y is the right shape when two destinations hang off one feed at an angle. If the split has to pass through a panel wall instead, use the PM bulkhead union rather than forcing this fitting through a hole.
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-S FAQ
This is a male branch Y joining Dia 4 mm tubing to a 1/8in PT male thread, with a SUS304 stainless stud and black PBT body. Working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. It takes soft nylon or polyurethane tube, and the stainless suffix does not change any of these figures.
On the PYB series the D gives you a black body, whereas on the PC and POC straight connectors it only changes the release button and leaves the body grey. The -S and the D are independent: this part combines a black PBT body with the SUS304 stud of the stainless option, and the ordering code before either suffix decodes exactly as normal.
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