Airtac BB Double Male Thread Straight Connector BB0303
The AirTAC Airtac BB Double Male Thread Straight Connector BB0303 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 BB0303
The BB0303 is a straight male connector with a male PT 3/8in thread on each end, so it splices two 3/8in female ports into one continuous line without any reducing adapter in between. The body is nickel plated, and the hex in the middle takes a standard spanner for assembly.
This family is the metal option for conditions that end a resin push-in fitting's working life: 0-1.0 MPa working pressure, 3.0 MPa proof pressure and a 0 to 150 C temperature range, plus a -750 mmHg (10 Torr) vacuum rating. AirTAC publishes no flow figure for the part, only a characteristic curve, so line capacity is best judged by the bore of the tubing and ports you connect.
Airtac BB Double Male Thread Straight Connector BB0303 Technical Specifications
| Model | Airtac BB Double Male Thread Straight Connector BB0303 |
|---|---|
| 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 BB0303
| 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 BB0303 Is Used
Hot-air dryer manifold splicing
Joins two 3/8in female drops on a heated air-dryer plenum where the metal body's 150 C rating outlasts a resin push-in joint close to the heater duct.
Injection mould tool air circuits
Ties 3/8in core-blast and ejector air lines together on moulding tools, standing up to 3.0 MPa proof pressure during high-force blow-off cycles.
Vacuum pick-up on packaging lines
Links two 3/8in female ports on a carton-forming vacuum circuit, where the -750 mmHg (10 Torr) negative rating keeps the joint sealed under sustained suction.
Is the Airtac BB Double Male Thread Straight Connector BB0303 the Right Part?
Step down to BB0203 (1/4in to 3/8in) if the upstream port is 1/4in, or up to BB0304 (3/8in to 1/2in) for a 1/2in branch. Same-size joins either side of 0303 are BB0202 and BB0404. If both existing ports are female, BU0303 (double female 3/8in) is the shorter answer than a BB plus a nipple.
Threads are PT only - there is no NPT or G version in this family, so plan sealing with PTFE tape or pipe sealant rather than relying on a parallel-thread O-ring. Remember the 150 C ceiling is the system limit: the fitting itself survives it, but the tube's own temperature rating usually sets where you stop.
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 BB0303 FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 3.0 MPa, negative pressure -750 mmHg (10 Torr), temperature 0 to 150 C, body nickel plated, threads PT 3/8in male on both ends. AirTAC publishes no numeric flow value for this part - capacity follows a characteristic curve tied to the connected line bore.
It is a permanent threaded splice: wrap the PT 3/8in threads with PTFE tape or apply pipe sealant, then tighten both hexes with a spanner. PT threads seal on the taper, so no O-ring or gasket is used. Slacken only if you need to reorient the run, and re-dress the threads before retightening.
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