Airtac BB Double Male Thread Straight Connector BB0103
The AirTAC Airtac BB Double Male Thread Straight Connector BB0103 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 BB0103
The BB0103 is a straight male connector: male PT thread at both ends, one 1/8in and one 3/8in, so it reduces a 3/8in supply line down to a 1/8in port in a single screw-in part. The body is nickel plated and the whole family is built for conditions that defeat resin push-in fittings, which is why it appears on hot machines rather than on bench setups.
The figures that matter: 0-1.0 MPa working pressure, 3.0 MPa proof pressure (twice the one-touch resin range), usable down to -750 mmHg vacuum, and a 0 to +150 C temperature window. Around oven ducts, dryer headers and mould-heating zones, the fitting is rarely the weak link at 150 C - the tubing usually is, so always check the tube's own rating before blaming the joint.
Airtac BB Double Male Thread Straight Connector BB0103 Technical Specifications
| Model | Airtac BB Double Male Thread Straight Connector BB0103 |
|---|---|
| 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 BB0103
| 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 BB0103 Is Used
Injection mould hot-runner air purge
Moulding tools run heated platens well past the 70 C ceiling of resin one-touch fittings. A BB0103 steps a 3/8in shop-air branch into a 1/8in purge port on the tool body, and the nickel-plated thread joint shrugs off the radiant heat.
Truck and bus air-brake test rigs
Brake system leak-down and proof testing routinely cycles pressures a resin fitting was never proofed for. The 3.0 MPa proof rating of the BB0103 gives test-stand builders margin, and the 1/8in end suits the small gauge and transducer ports on the rig.
Bakery proofer and oven damper actuation
Proofing cabinets and deck-oven damper cylinders sit in warm, humid air year-round. Nickel plating resists the wash-down moisture, and the 150 C rating keeps the 1/8in x 3/8in joint stable near the oven shell where plastic fittings creep.
Is the Airtac BB Double Male Thread Straight Connector BB0103 the Right Part?
BB0103 sits in the middle of a run of 1/8in male connectors. Step down to BB0102 (1/8in x 1/4in) when the supply branch is 1/4in; step up to BB0104 (1/8in x 1/2in) for a half-inch main. Going up a thread size mainly buys flow capacity for the 1/8in leg - there is no published Cv figure, so size by bore. If both ports are 3/8in, the part you want is BB0303, not a reducing connector.
Two honest alternatives: if the equipment port is female 3/8in, a BD0103 (female Thread I, male 1/8in... in this case the 01/03 pairing is a female 1/8in to male 3/8in) removes the need for a BB plus a separate adapter. And if you are capping an unused 1/8in port rather than connecting anything, a BZ01 hex plug is the simpler, cheaper answer.
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 BB0103 FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 3.0 MPa, vacuum usable to -750 mmHg (10 Torr), operating temperature 0 to +150 C. The part is a male-to-male straight connector with PT 1/8in on one side and PT 3/8in on the other, nickel-plated body. Note there is no tube on this part - only the BKC family in this range accepts tubing.
PT is a tapered pipe thread in the JIS family. AirTAC publishes this fitting in PT only - there is no NPT or G variant in the code ladder, so an NPT port needs an adapter rather than a substitution. For assembly, wrap the male thread with seal tape (leaving the first thread clear so tape cannot shed into the air line), start it by hand to avoid cross-threading, then tighten with a spanner. No published tightening torque exists for this family, so tighten until the taper seats and check for leaks under pressure rather than chasing a torque figure.
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