
The AirTAC Airtac PC Threaded Straight Connector PC1204D 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.
The PC1204D is an AirTAC PC series one-touch male connector, the largest standard tube bore in the PC ladder, pushing Dia 12 mm soft nylon or polyurethane tubing onto a 1/2in PT male thread. Push the tube home and the stainless spring gasket and chuck grip it against the POM seal; press the release ring and the tube slides straight back out.
It runs on the resin and brass spec profile: 0-1.0 MPa (0-10 kgf/cm2) working pressure, -750 mmHg (10 Torr) vacuum, 1.5 MPa proof pressure and -20 to +70 C. On the PC series the D suffix changes the release button to black while the body stays standard grey, so this SKU is chosen when shops colour-code touch points rather than bodies. The 1/2in thread arrives with sealant already applied, ready to wind into the port.
| Model | Airtac PC Threaded Straight Connector PC1204D |
|---|---|
| Type | Male connector |
| Series | PC |
| 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.
| 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. |
Feeding a large-bore clamping cylinder on a press bed, where the 1/2in PT port screws straight into the cylinder head and the 12 mm bore preserves clamp speed.
A Dia 12 drop from the factory air ring main down to a machine-side distribution block, terminated on the block's 1/2in female port.
Screwed into the 1/2in supply port of a large valve manifold so the incoming 12 mm polyurethane trunk connects without adapters or hard piping.
This is the top of the PC 1/2in tube ladder: below it sits the PC1004 on Dia 10 mm, and nothing larger exists on a 1/2in PC connector, so a Dia 12 actuator or main has no step-up here. If your port is smaller, the PC1203 takes the same 12 mm tube onto a 3/8in thread instead. Remember the tube must match exactly - a Dia 12 chuck will not seal 1/2in (12.7 mm) imperial hose or 10 mm tube.
Dia 12 mm is the bore to pick when flow demand, not space, drives the design: cylinder speed on large-bore actuators depends on the narrowest point in the circuit, and a 12 mm one-touch path keeps that restriction downstream of the fitting. If you need to pass this line through a panel wall rather than thread it into a component, the PM1204 bulkhead connector with its M22x1 locknut is the panel-mount counterpart.
Quick checklist
Tube size Dia 12 mm, thread 1/2in PT male. Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. It accepts soft nylon or polyurethane tubing only, and the thread ships with sealant pre-applied.
No. One-touch chucks grip the exact stated outside diameter, so this fitting takes 12.0 mm OD tube only - nominal 1/2in hose at 12.7 mm will not seal. For imperial hose you would need a different termination method, or step the circuit through an appropriate adapter rather than forcing a metric one-touch onto it.
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