Airtac BB Double Male Thread Straight Connector BB0204
The AirTAC Airtac BB Double Male Thread Straight Connector BB0204 is a genuine male / male connector rated to 3.0 MPa proof pressure and 0 to +150 °C, for joining threaded pipe runs.
- TypeMale / male connector
- SeriesBB
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure3.0 MPa
- Temperature0 to +150 °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 BB Double Male Thread Straight Connector BB0204
The BB0204 is a straight male connector with external PT threads on both ends: 1/4in on one side, 1/2in on the other. It is the widest step-up in the BB ladder that starts from a 1/4in port, doubling the thread in a single turned fitting instead of stacking a reducer on top of a straight adapter.
Like every part in this family it carries a nickel-plated body and a spec profile well beyond the usual push-in resin fitting: 3.0 MPa proof pressure, 0-1.0 MPa working pressure, -750 mmHg vacuum and a 0 to +150 C temperature range. That combination is why a steel-threaded part like this gets specified near ovens, dryers and moulding tools where a resin one-touch would soften or burst.
Airtac BB Double Male Thread Straight Connector BB0204 Technical Specifications
| Model | Airtac BB Double Male Thread Straight Connector BB0204 |
|---|---|
| Type | Male / male connector |
| Series | BB |
| Connection | Threaded both ends |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 3.0 MPa |
| Temperature | 0 to +150 °C |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
Nickel-plated metal body. AirTAC does not publish a per-part material breakdown for this family. This family is rated to 150 °C, but the TUBE is usually the limit - confirm your tubing's temperature rating before running it hot. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac BB Double Male Thread Straight Connector BB0204
| BB | Male / 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. |
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 BB Double Male Thread Straight Connector BB0204 Is Used
Trailer air brake feed plumbing
Stepping a 1/4in control line up to the 1/2in main reservoir piping on a commercial trailer or rigid truck, where vibration and pressure spikes favour a metal threaded joint over a push-in resin elbow.
Thermoforming mould cooling circuits
Tying 1/4in cooling take-offs into the 1/2in water or air headers on a vacuum-forming tool, where the mould deck runs hot and the fitting sits close to the heated platens.
Plating line rinse-stand actuation
Feeding lift and tilt cylinders on metal-finishing rinse stations, where corrosive wash-down atmospheres and warm process air make a plated metal connector the dependable choice.
Is the Airtac BB Double Male Thread Straight Connector BB0204 the Right Part?
Step down to BB0203 if your large end is 3/8in rather than 1/2in; step to BB0304 if the small port is actually 3/8in, or BB0404 for a full 1/2in-to-1/2in run. Every BB part is PT thread only, so no NPT or G variant exists to cross-order.
If the 1/2in side needs to land on a female port, BD0204 gives you a male 1/2in into a female 1/4in in one part - one fewer joint, one fewer leak path than a BB plus an adapter. Any 1/2in port you are not using should be closed with BZ04 rather than taped over.
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 0 to +150 °C
Airtac BB Double Male Thread Straight Connector BB0204 FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure down to -750 mmHg (10 Torr), proof pressure 3.0 MPa, operating temperature 0 to +150 C. Threads are PT 1/4in on one end and PT 1/2in on the other, with a nickel-plated body. No tube is involved - both ends are male threads.
The threads are PT tapered, so standard pipe sealant or PTFE tape on the male threads is the normal way to seal them - AirTAC publishes no tightening torque for this part, so tighten to a sound joint rather than a published figure. The datasheet does not fix which physical end carries the 1/4in versus the 1/2in thread, so plan your pipework around the part rather than assuming an orientation.
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