Airtac PYB Y-Type Threaded Tee Fitting PYB4M5D-S
SUS304 stainless variant (-S)The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB4M5D-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 PYB4M5D-S
The AirTAC PYB4M5D-S is a one-touch branch Y in the smallest configuration AirTAC builds for this prefix: two Dia 4 mm push-in legs fed from a single M5x0.8 male stud. Push each tube home and the internal chuck grips it; press the release ring and it lets go. The Y body splits one M5 supply into two equal 4 mm branches without extra tees or elbows.
This belongs to the resin and brass one-touch profile: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and -20 to +70 C on soft nylon or polyurethane tubing. The -S suffix puts a SUS304 stainless stud on the threaded side while the body stays PBT, finished black here because the D suffix on the PYB family changes the whole body colour, not just the release button. Note that the M5 stud seals with a gasket rather than pre-applied thread sealant.
Airtac PYB Y-Type Threaded Tee Fitting PYB4M5D-S Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB4M5D-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 PYB4M5D-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 PYB4M5D-S Is Used
Analytical instrument carrier gas
Tap an M5 port on a gas chromatograph or spectrometer manifold and split one supply into two Dia 4 lines feeding a detector and a purge nozzle, with the SUS304 stud resisting corrosion from trace moisture in the gas.
SMT pick-and-place head
Feed two Dia 4 vacuum or blow-off legs from a single M5 tap on the gripper manifold of a small electronics assembly head, where the black PBT Y body keeps the plumbing down to one fitting.
Mould cooling air jets
Branch one M5 supply on an injection mould into two Dia 4 nozzles that blow chips and mist clear of the parting line, angled so the twin legs reach opposite sides of the cavity.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB4M5D-S the Right Part?
Dia 4 mm is the bottom rung of the PYB M5 ladder - the only larger tube size offered on M5 is Dia 6 (PYB6M5), which moves noticeably more air through a bore a half-millimetre wider but still suits compact instrument ports. If your port is tapped 1/8 in instead of M5, the PYB401 keeps Dia 4 tube on the bigger thread. Every tube size in this family is fixed: a Dia 4 socket will not hold 5 mm or 1/4 in tubing, so match the OD exactly.
Choose the Y shape over a tee when two downstream lines should sit close together at an angle, saving a fitting and two short tube runs inside a cramped manifold or instrument enclosure.
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 PYB4M5D-S FAQ
It is a Dia 4 mm one-touch branch Y with an M5x0.8 male stud. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, and service temperature -20 to +70 C on soft nylon or polyurethane tubing. The -S stud is SUS304; every pressure and temperature figure is identical to the standard PYB.
No. On the PYB family only the threaded stud is SUS304 stainless; the Y body remains PBT (black on this D-suffix version) with a POM release button and NBR O-ring. AirTAC re-rates nothing for the -S: it is a corrosion upgrade on the thread side, not a different pressure class, and no surface finish or certification figures are published for it.
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