Airtac PYB Y-Type Threaded Tee Fitting PYB804D-S
SUS304 stainless variant (-S)The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB804D-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 PYB804D-S
The AirTAC PYB804D-S is a one-touch branch Y fitting that takes a Dia 8 mm soft nylon or polyurethane tube into two push-in ports and presents a 1/2in PT male thread on the third leg. Push the tube home and the internal chuck grips it under spring load; press the release ring and it frees again, so branches can be reworked without dismantling the circuit. The D suffix specifies the black body option.
This is the -S variant: the male stud is SUS304 stainless steel, while the body stays PBT and the release button and chuck stay POM. It is not a solid stainless fitting, but the stainless stud is what faces the port, so it holds up where a plain brass stud would corrode. Ratings are identical to the standard resin line: 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure and -20 to +70 C. The thread arrives with sealant pre-applied.
Airtac PYB Y-Type Threaded Tee Fitting PYB804D-S Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB804D-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 PYB804D-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 PYB804D-S Is Used
Chemical dosing skid actuation
Splitting a single 1/2in valve port out to two dia 8 lines feeding dosing pump actuators, where the SUS304 stud resists splash and fume that would pit a brass stud.
Bottle-rinsing conveyor air knives
Branching washdown-area supply from one manifold thread into two push-in lines running along a rinsing conveyor, with the black PBT body shrugging off routine hose-down.
Automotive weld-cell fixture circuit
Feeding two clamp cylinders from one supply drop on a robotic weld fixture, keeping the branch inside the guard where an elbow-plus-tee stack would not fit.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB804D-S the Right Part?
Within the PYB ladder on a 1/2in thread, Dia 8 is the smallest tube made - there is no Dia 6 or 4 option at this thread size. Stepping up gives the PYB1004-S (Dia 10) or PYB1204-S (Dia 12), each carrying more bore and therefore more capacity through the same Y shape. If your port is 3/8in instead, the PYB803-S keeps the identical Dia 8 tube on the smaller thread, and 1/4in ports take the same 8 mm tube on PYB802.
Before ordering, confirm the two things the Y cannot forgive. First, tube OD must match exactly - a Dia 8 chuck will not seal on 1/4in or 5/16in imperial tube, no matter how close it looks. Second, match the port: 1/2in PT seals on the thread cone with the factory sealant, so do not add tape over it. Where the branch must pass through a panel rather than sit on a port, the PLM or PM bulkhead shapes are the correct alternative.
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 PYB804D-S FAQ
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 joins Dia 8 mm soft nylon or polyurethane tube to a 1/2in PT male thread. The stud is SUS304 stainless, the body is PBT in black (D suffix), and the release button and chuck are POM.
No. In the -S version of the PYB family the male stud is SUS304 and everything else follows the standard build - PBT body, POM chuck and release button, aluminium guide, NBR seal. A full SUS304 body is only offered on the PC and POC straight connectors, not on the Y branch. Pressure and temperature ratings are unchanged from the standard part.
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