Airtac PYB Y-Type Threaded Tee Fitting PYB1204-S
SUS304 stainless variant (-S)The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB1204-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 PYB1204-S
The PYB1204-S is an AirTAC PYB threaded branch Y in the one-touch resin family, joining a single 1/2in PT male stud to two Dia 12 mm tube outlets set at a Y angle. To make a joint you simply push the soft nylon or polyurethane tube into the chuck until it bottoms out; the stainless spring gasket and gripper ring lock it against pressure and vacuum in both directions, and the POM release button frees the tube again without tools. The 12 mm bore is the largest the PYB ladder offers, so this fitting is aimed at trunk lines that feed real volume rather than pilot signals.
Because this SKU carries the -S suffix, the male stud is SUS304 stainless steel while the Y body remains PBT - the stainless sits at the port interface where wrench contact and thread corrosion happen first. Ratings are the standard resin profile, not a re-rated part: 0-1.0 MPa working pressure (0-10 kgf/cm2), -750 mmHg (10 Torr) vacuum, 1.5 MPa proof pressure and -20 to +70 C. AirTAC ships the threaded stud with sealant already applied, so the 1/2in PT port seals on installation without extra tape.
Airtac PYB Y-Type Threaded Tee Fitting PYB1204-S Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB1204-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 PYB1204-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 PYB1204-S Is Used
Palletiser gripper supply split
On a robotic palletising cell, a 1/2in PT port on the gripper manifold can feed two Dia 12 lines to opposite-side vacuum pad banks. The Y split avoids two 90 degree elbows stacked at the wrist, where rigid large-bore tube is hardest to route.
Blow-off header on a canning line
A can-rinse air knife header supplied from a 1/2in PT branch can split to two Dia 12 drops feeding nozzles on either side of the conveyor, keeping one threaded connection at the header instead of three fittings and a tee.
Divert-gate actuation on a sorter
Sorter divert gates often run paired cylinders. A single 1/2in supply port feeding two Dia 12 cylinder lines through a branch Y halves the fitting count at the gate module and keeps the stainless stud presentable in wash-adjacent areas.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB1204-S the Right Part?
Within the PYB 1/2in row the ladder runs Dia 8, Dia 10 and Dia 12. Stepping down to a PYB1004-S gives you a narrower bore with correspondingly lower carrying capacity but a smaller envelope and lighter tube load; this Dia 12 version is the ceiling of the range, so if your actuator flow is marginal at Dia 10 there is no larger branch Y to step up to - the answer at that point is a bigger thread series or a manifold, not a bigger PYB. Whichever you choose, the tube OD must match exactly: a Dia 12 chuck will not grip 1/2in (12.7 mm) imperial tube, and the seal will leak immediately.
A branch Y earns its place over a run tee when two lines leave the same port at an angle rather than a square corner. The oblique split keeps each tube's bend gentler, which matters at Dia 12 where stiff tube fights every sharp turn. If you need a perpendicular take-off instead, look at the PED run tee; if the stud must pass through a panel, that is a PMF bulkhead job, not a PYB.
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 PYB1204-S FAQ
It is a PYB one-touch branch Y with two Dia 12 mm tube outlets on a 1/2in PT male stud. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), vacuum service is -750 mmHg (10 Torr), proof pressure is 1.5 MPa and the temperature range is -20 to +70 C. The -S suffix makes the male stud SUS304 stainless steel; the Y body is PBT with POM release buttons, aluminium-alloy guides and NBR O-rings. It suits soft nylon or polyurethane tube only.
No. On the PYB family the stainless upgrade applies to the male stud, which is SUS304; the Y-shaped body stays PBT. The pressure, vacuum and temperature figures are identical to the standard PYB1204, and the outside dimensions match the standard part too, so the -S is a corrosion-resistance choice at the thread, not a re-rated fitting. Use it where the port face sees moisture, wash-down splash or corrosive air.
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