Airtac PP Pipe Plug PP4D
The AirTAC Airtac PP Pipe Plug PP4D is a genuine plug for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypePlug
- SeriesPP
- 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 PP Pipe Plug PP4D
The PP4D is an AirTAC PP series plug from the resin one-touch range: a small push-in cap that seals an unused Dia 4 mm port on any matching one-touch socket. Push it into the chuck and the internal stainless spring gasket with NBR O-ring seats against it, closing the branch; pull it out with the release ring when the port is needed again. There is no thread on this part - it is purely a tube-side blanking plug.
PP belongs to the resin and brass one-touch profile: 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure and -20 to +70 C operation. The D suffix makes the whole body black on the PP series - unlike PC or POC, where D only colours the release button, here the visible part itself is black. Body material is POM with an aluminium-alloy guide, so the plug adds almost no weight to a crowded manifold face.
Airtac PP Pipe Plug PP4D Technical Specifications
| Model | Airtac PP Pipe Plug PP4D |
|---|---|
| Type | Plug |
| Series | PP |
| 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 PP Pipe Plug PP4D
| PP | Plug. |
|---|---|
| 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 PP Pipe Plug PP4D Is Used
Spare outlets on packaging manifolds
Multi-branch manifold blocks on cartoning and filling machines often carry one more outlet than the design needs. A PP4D blanks the unused Dia 4 port cleanly so the spare is ready for a future retrofitted actuator.
Commissioning pick-and-place stations
While staging a small pick-and-place gantry, vacuum and actuator take-offs are brought live one at a time. Push-in plugs seal the not-yet-used Dia 4 branches at full line pressure until each station is hooked up.
Lab and analyser pneumatic benches
Bench-top analysis rigs route 4 mm soft nylon lines to sensors and sampling valves. Black PP4D plugs close off calibration ports invisibly against black panels and keep dust out of unused circuits between runs.
Is the Airtac PP Pipe Plug PP4D the Right Part?
PP4 is the smallest plug in the PP ladder; there is no Dia 3.2 option in this series, so Dia 6 (PP6) is the only step up from here. Stepping to Dia 6 gives you a plug for the larger ports on 6 mm manifold branches, but it will not enter a Dia 4 socket - the diameter must match the port exactly, just as a Dia 4 fitting will not hold 1/4 inch tube. If you need to blank a threaded port instead of a push-in one, that is a threaded plug or a PC connector with capped tube, not this part.
Use a plug rather than looping tube back on itself whenever a tee, manifold block or multi-branch fitting has a spare outlet. It keeps the circuit sealed to the same 1.0 MPa the fittings around it are rated for, with no loose tube end to work loose under vibration.
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 PP Pipe Plug PP4D FAQ
The PP4D is a Dia 4 mm black one-touch tube plug with no thread. It belongs to AirTAC's resin one-touch profile: working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure down to -750 mmHg (10 Torr), proof pressure 1.5 MPa and a temperature range of -20 to +70 C. Sealing is by a stainless spring gasket and NBR O-ring inside the POM body.
No. This plug is sized for Dia 4 mm one-touch sockets only - it will not seal a 6 mm socket and it has no thread for a PT port. For a Dia 6 or larger unused socket step up to the matching PP size, and for a blanked threaded port use a threaded pipe plug instead of a push-in one.
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