Airtac BB Double Male Thread Straight Connector BB0203
The AirTAC Airtac BB Double Male Thread Straight Connector BB0203 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 BB0203
The BB0203 is a straight reducing male connector from AirTAC's BB pipe-joint family: a nickel-plated body with a male PT thread on each end, one at 1/4in and one at 3/8in. It screws into two female ports of different sizes and carries the line straight through, so a 3/8in supply manifold can feed a 1/4in branch without a hex nipple plus a second adapter.
This metal family is specified where resin push-in fittings drop out: 3.0 MPa proof pressure (double the one-touch figure), 0-1.0 MPa working pressure, vacuum down to -750 mmHg, and a 0 to +150 C temperature window. Check the tube's own rating as well - in hot circuits the tube, not this connector, is usually what limits temperature.
Airtac BB Double Male Thread Straight Connector BB0203 Technical Specifications
| Model | Airtac BB Double Male Thread Straight Connector BB0203 |
|---|---|
| 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 BB0203
| 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 BB0203 Is Used
Injection moulding core-pull air
Steps a 3/8in shop-air drop to the 1/4in circuit that actuates a core or ejector on a moulding machine, surviving the hot mould area that softens resin fittings.
Powder-coating oven conveyor actuation
Feeds cylinder air along a conveyor line that passes through or beside a curing oven, where ambient skin temperatures exceed the 70 C ceiling of one-touch fittings.
Permanent manifold plumbing
Used when a machine builder wires up a 3/8in distribution manifold to 1/4in valve and cylinder ports for good - a made-up threaded joint rather than a service point.
Is the Airtac BB Double Male Thread Straight Connector BB0203 the Right Part?
Step down with BB0103 (1/8in x 3/8in) if the small side needs to shrink further, or BB0202 (1/4 x 1/4) if you do not need a reduction at all. Step up with BB0204 (1/4in x 1/2in) when the large end meets a half-inch port. Every BB code is PT thread only - there is no NPT or G version of this family.
Because the ordering code defines Thread I and Thread II by size but the datasheet does not fix which physical end is which, plan your pipework around the two sizes rather than a left/right orientation. If one port is female and you only need one male end, compare BD0102-style male-female parts before stacking a BB with an adapter.
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 BB0203 FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure to -750 mmHg (10 Torr), proof pressure 3.0 MPa, and a temperature range of 0 to +150 C. The body is nickel plated and carries a male PT thread at both ends: 1/4in (code 02) on one side and 3/8in (code 03) on the other. No tube is involved - it is a thread-to-thread connector.
Both ends are PT taper threads, so use PTFE tape or a suitable thread sealant - a bare PT taper will not seal dry. Start the thread by hand to avoid cross-threading, then wrench-tighten. AirTAC publishes no tightening torque for this family, so judge tightness by the thread engagement and leak-check the joint at working pressure before running the line hot.
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