Airtac BU Double Female Thread Straight Connector BU0202
The AirTAC Airtac BU Double Female Thread Straight Connector BU0202 is a genuine double female connector rated to 3.0 MPa proof pressure and 0 to +150 °C, for joining threaded pipe runs.
- TypeDouble female connector
- SeriesBU
- 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 BU Double Female Thread Straight Connector BU0202
The BU0202 is AirTAC's double female connector: a short hex body with a 1/4in PT female thread on each end. It screws two male studs together in a straight line, so an air main can pass through a bracket, a panel or a machine wall without a bulkhead part. Being female both ends, it lets you swap either side later by simply unscrewing the stud.
This family is built for duty that defeats one-touch resin fittings: working pressure 0-1.0 MPa, proof pressure 3.0 MPa and a continuous temperature range of 0 to +150 C on a nickel-plated body. It is equally at home under -750 mmHg vacuum. That is why these joints keep appearing beside ovens, dryers and heated tooling, where plastic bodies creep or crack.
Airtac BU Double Female Thread Straight Connector BU0202 Technical Specifications
| Model | Airtac BU Double Female Thread Straight Connector BU0202 |
|---|---|
| Type | Double female connector |
| Series | BU |
| 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 BU Double Female Thread Straight Connector BU0202
| BU | Double female 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 BU Double Female Thread Straight Connector BU0202 Is Used
Bakery rack oven damper circuit
Quarter-inch lines feeding damper and door cylinders on rack ovens sit well above 100 C in the enclosure. The BU0202's 150 C rating and metal body keep the joint sound where a resin fitting would soften.
Injection mould core-pull circuit
Air ejected from a hot mould side runs hot and pulsed. A 1/4in BU0202 links the stud outlets from the tool manifold to the valve bank, and its 3.0 MPa proof pressure covers the spikes from fast valve switching.
Textile stenter heated air take-off
On stenter frames, instrument air is tapped from runs that pass close to the heating zones. A nickel-plated BU0202 joins two male drop studs on such a run, and the -750 mmHg rating even suits the vacuum edge-holding lines nearby.
Is the Airtac BU Double Female Thread Straight Connector BU0202 the Right Part?
The BU ladder is equal-size only: 0101 (1/8in), 0202 (1/4in), 0303 (3/8in) and 0404 (1/2in). Down one step is the BU0101 for 1/8in lines, up one step is the BU0303 for 3/8in - there is no mixed-size BU part in the catalogue. If you actually need 1/8in to 1/4in, do not stack a BU on a reducer; a single BB0102 male connector or BD0102 reducing connector does the job with one joint and one seal fewer.
1/4in PT is the workhorse branch size on most compressors and FRL outlets, so the BU0202 is the usual pick for extending or joining two male-threaded drops. Note PT is a tapered thread: seal with PTFE tape or paste on the male studs, and never on the female seat. AirTAC publishes no tightening torque for this part, so snug it with a spanner on the hex and leak-test before running.
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 BU Double Female Thread Straight Connector BU0202 FAQ
The BU0202 is a double female connector with a 1/4in PT female thread on both ends of a nickel-plated body. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), negative pressure is -750 mmHg (10 Torr), proof pressure is 3.0 MPa and the temperature range is 0 to +150 C. There is no tube on this part; it is thread-to-thread only.
No. The BU range is made in equal sizes only - 1/8, 1/4, 3/8 and 1/2in - so a BU part always has the same thread on both ends. To change size, order one BB or BD connector instead, for example the BB0102 or the reducing BD0102, which carries the 1/8in to 1/4in change in a single joint.
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