Airtac PYB Y-Type Threaded Tee Fitting PYB4M5
The AirTAC Airtac PYB Y-Type Threaded Tee Fitting PYB4M5 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 PYB4M5
The PYB4M5 is an AirTAC PYB branch Y one-touch fitting: a compact three-way part that splits one M5x0.8 male supply port into two Dia 4 mm tube lines. You push each soft nylon or polyurethane tube straight into its socket until it bottoms out; the internal chuck grips the tube wall and the stainless spring gasket seals it. Press the release ring and the tube slides free, so re-routing a small air line takes seconds without tools.
This is the resin one-touch profile, not the metal line: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a working temperature of -20 to +70 C. The M5 end seals with its own gasket rather than thread sealant, so it seats metal-to-metal against a machined M5x0.8 port - useful on small valves and sensor bodies where a wound sealant would foul the thread or over-torque the boss.
Airtac PYB Y-Type Threaded Tee Fitting PYB4M5 Technical Specifications
| Model | Airtac PYB Y-Type Threaded Tee Fitting PYB4M5 |
|---|---|
| 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 PYB4M5
| 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 PYB4M5 Is Used
Pick-and-place head air feed
On a compact pick-and-place head, one small M5 valve port often has to feed both a miniature gripper and a blow-off jet. The PYB4M5 splits that single M5x0.8 take-off into two Dia 4 lines right at the actuator, with no extra valve block and no tube tee dangling in the moving mechanism.
Analytical instrument air jet
Benchtop analytical and laboratory instruments use Dia 4 polyurethane tubing for purges, cooling jets and sample aspiration. The PYB4M5 lets a designer hang two such lines from one M5 port on a solenoid valve, and the -750 mmHg vacuum rating covers light suction duties as well as pressure.
Manifold branch on a compact control panel
Inside a crowded control panel, an M5 port on a manifold or valve island can be split by this Y instead of adding a second fitting layer. The 4 mm branch lines then run out to panel-mounted indicators, small actuators or sensor air purges with minimal added height.
Is the Airtac PYB Y-Type Threaded Tee Fitting PYB4M5 the Right Part?
Dia 4 is the smallest tube size AirTAC makes on the PYB M5 row - there is no step down - and the only neighbour up is Dia 6 (PYB6M5). Stepping to 6 mm roughly increases the bore area available to the branch, which matters when the two downstream legs feed short cylinders or air jets that need velocity; for signal lines and light actuation the 4 mm bore keeps the Y body and its two tube stubs noticeably shorter. If your port is 1/8 PT instead of M5, the same Y shape exists as PYB401, but check the interface table first - not every thread and tube pair is manufactured.
Remember that one-touch tube sockets accept exactly one OD: a Dia 4 socket will not grip 5/32 inch or 1/4 inch tube, even though it looks close. If the branch actually needs to pass through a panel or manifold wall rather than screw onto a port face, the bulkhead union (PM) with an M12x1 locknut for Dia 4 is the correct shape, not this Y.
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 PYB4M5 FAQ
The PYB4M5 is an AirTAC PYB branch Y one-touch fitting joining Dia 4 mm tube to an M5x0.8 male thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure is 1.5 MPa, vacuum capability is -750 mmHg (10 Torr) and the working temperature range is -20 to +70 C. It is intended for soft nylon or polyurethane tubing with a true 4 mm OD, and the M5 end seals via a gasket rather than thread sealant.
No. On this resin one-touch range, M5x0.8 threaded parts arrive with a sealing gasket and seal metal-to-metal into a machined M5 port; thread sealant is only pre-applied on the larger PT threads such as 1/8 and 1/4. Just thread the M5 end in snugly - over-tightening risks damaging a small valve boss - and push the Dia 4 tube fully home until it stops, which is what engages the grip chuck and the seal.
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