Airtac PC Threaded Straight Connector PC1204D-S
SUS304 stainless variant (-S)The AirTAC Airtac PC Threaded Straight Connector PC1204D-S is a genuine male connector for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeMale connector
- SeriesPC
- 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 PC Threaded Straight Connector PC1204D-S
The PC1204D-S is AirTAC's PC male connector in the SUS304 stainless-steel variant, joining Dia 12 mm soft nylon or polyurethane tube to a 1/2in PT male thread. Push the tube straight into the chuck and the stainless spring gasket grips it for a pressure-tight seal; press the POM release ring and the tube slides straight back out. This is the largest tube size on the PC male-connector ladder, so it carries the heaviest branch feeds in the range.
On -S PC straight connectors the body itself is stainless steel 304 and the whole fitting is copper-free, which is exactly why a buyer picks it over the standard brass-bodied PC1204D for wash-down, plating or electronics work. The release button and chuck stay POM (black here, because the D suffix changes the button colour on PC parts, not the body), the guide is aluminium alloy, and the O-ring is NBR. Ratings are identical to the standard line, not upgraded: 0-1.0 MPa working, 1.5 MPa proof, -20 to +70 C.
Airtac PC Threaded Straight Connector PC1204D-S Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC1204D-S |
|---|---|
| Type | Male connector |
| Series | PC |
| 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 PC Threaded Straight Connector PC1204D-S
| PC | Male connector. |
|---|---|
| 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 PC Threaded Straight Connector PC1204D-S Is Used
Brewery and dairy wash-down frame
A 1/2in PT port on a rinse-protected packaging frame takes daily caustic hose-down. The SUS304 body resists the wash chemistry and the copper-free construction avoids staining beer-contact surfaces nearby, while the Dia 12 bore keeps actuator supply fast.
Plating-line transfer arm feed
Acid mist around electroplating tanks eats brass studs and leaves copper salts on workpieces. A copper-free SUS304 connector feeding the transfer-arm cylinder through Dia 12 tube keeps both the fitting and the bath chemistry clean.
Semiconductor tool air drop
Copper particles are a yield killer in electronics assembly. A copper-free Dia 12 trunk fitting on the tool's main air drop, threaded into a 1/2in PT regulator outlet, gives a release-ring connection that maintenance can break without brazing or sealing tape.
Is the Airtac PC Threaded Straight Connector PC1204D-S the Right Part?
You are at the top of two ladders at once. On the tube side, Dia 12 is the biggest PC tube size made - the only step down is PC1004D-S or PC1004 (Dia 10 to the same 1/2in thread), which suits lighter cylinder and valve feeds. On the thread side, 1/2in is the largest port on the PC row; PC1203 (Dia 12 with a 3/8in thread) is the step down if your manifold has a smaller tapped hole. There is nothing above either size in this catalogue, so a Dia 16 or 3/4in request means a different fitting family entirely. Whatever you choose, the tube OD must match the chuck exactly - this fitting will not seal on 1/2in imperial tube even though the thread is 1/2in.
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 PC Threaded Straight Connector PC1204D-S FAQ
It is a PC one-touch male connector for Dia 12 mm soft nylon or polyurethane tube with a 1/2in PT male thread, in the SUS304 stainless variant with a black release button. 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 temperature range is -20 to +70 C. The body is stainless steel 304 and copper-free; the chuck is POM, the guide aluminium alloy, the spring gasket stainless and the O-ring NBR.
No. The -S suffix changes the corrosion behaviour of the materials, not the ratings: working pressure stays 0-1.0 MPa and the temperature range stays -20 to +70 C. If your line genuinely runs hot, the separate AirTAC metal one-touch line (BPC family) is the 0.9 MPa / up to 150 C option, and even there the tube itself, not the fitting, is usually the high-temperature limit.
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