Airtac PEB T-Shaped Straight Thread Tee Connector PEB402D-S
SUS304 stainless variant (-S)The AirTAC Airtac PEB T-Shaped Straight Thread Tee Connector PEB402D-S is a genuine male branch tee for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeMale branch tee
- SeriesPEB
- 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 PEB T-Shaped Straight Thread Tee Connector PEB402D-S
The PEB402D-S is an AirTAC PEB male branch tee in the stainless-variant build: it takes Dia 4 mm soft nylon or polyurethane tubing into the branch outlet and presents a 1/4 in PT male thread for the main run, with the branch leaving at 90 degrees off the through path. The trailing D gives this one a black body rather than the standard grey. Connection is one-touch throughout - push the tube fully home and the internal chuck grips it under the stainless spring gasket; press the release ring and the tube slides free again.
Note what the -S actually changes on a PEB: the body remains PBT, while the threaded stud machined into the main run is SUS304. That puts the corrosion-resistant metal exactly where the fitting screws into the machine port, which is the surface exposed to wash-down spray, salt-laden air or plating fumes. Ratings are identical to the standard resin line - 0 to 1.0 MPa working, 1.5 MPa proof, -20 to +70 C - because the stainless option changes materials, never pressure or temperature figures.
Airtac PEB T-Shaped Straight Thread Tee Connector PEB402D-S Technical Specifications
| Model | Airtac PEB T-Shaped Straight Thread Tee Connector PEB402D-S |
|---|---|
| Type | Male branch tee |
| Series | PEB |
| 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 PEB T-Shaped Straight Thread Tee Connector PEB402D-S
| PEB | Male branch tee. |
|---|---|
| 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 PEB T-Shaped Straight Thread Tee Connector PEB402D-S Is Used
Plating line air signal take-off
On an electroplating or anodising tank line, airborne acid mist attacks brass studs at the valve port. With the SUS304 stud at the 1/4 in port and Dia 4 tubing running the short branch to a solenoid pilot, the exposed metal is the part that resists, and the PBT body keeps the cost sensible.
Wash-down branch on a packaging machine
A food packaging machine rinsed between product changeovers needs its small pilot lines teed off the main run without corroding studs. Branch the 1/4 in port with this tee and run Dia 4 tube to a reject-actuation jet; the stainless thread sits in the spray zone.
Feeding a compact gripper from a manifold
Small pneumatic grippers on electronics assembly heads often run on 4 mm tubing while the manifold port below is 1/4 in. This branch tee splits the supply at the port, sending one leg straight through and one at 90 degrees to the gripper, with no extra elbow needed.
Is the Airtac PEB T-Shaped Straight Thread Tee Connector PEB402D-S the Right Part?
Dia 4 is the smallest tube bore AirTAC makes on the PEB branch tee - there is no smaller step below it, so if your line is marginal at 4 mm, the only way is up to Dia 6 (PEB602), which buys you a noticeably larger bore for short cylinder or jet lines. On the thread side, 1/4 in is already the largest port thread offered on Dia 4 tube in this prefix; the 3/8 in thread ladder only begins at Dia 6. For a Dia 4 branch, your realistic thread choices are M5, 1/8 in and this 1/4 in.
Match the male thread to the port and let AirTAC do the sealing - threaded parts in this range arrive with sealant already applied to the thread (M5 sizes use a gasket instead), so no tape or paste is needed on assembly. And keep the bore match absolute: this tee grips 4 mm OD tube only, not 5/32 in or 1/4 in imperial tube, however close the numbers look.
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 PEB T-Shaped Straight Thread Tee Connector PEB402D-S FAQ
It is rated 0 to 1.0 MPa (0 to 10 kgf/cm2) working pressure, 1.5 MPa proof pressure, and -750 mmHg (10 Torr) vacuum. Temperature range is -20 to +70 C. The fitting joins Dia 4 mm soft nylon or polyurethane tube to a 1/4 in PT male thread, and the -S build means the stud is SUS304 in a PBT body. These figures are the same as the standard grey PEB402 - stainless changes materials, not ratings.
No, and it is worth knowing before you order. On the PEB family the -S option keeps the body in PBT and upgrades the threaded stud to SUS304, so the corrosion-critical thread at the machine port is stainless while the tube sockets stay polymer. If your environment attacks the tube sockets themselves rather than the port thread, a different family with a solid stainless body would serve better; if the wash-down or fume exposure is at the port, this stud is exactly the right metal in the right place.
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