Airtac BU Double Female Thread Straight Connector BU0202-S
SUS304 stainless variant (-S)The AirTAC Airtac BU Double Female Thread Straight Connector BU0202-S 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-S
The BU0202-S is a double female connector: a single hex body with a 1/4in PT female thread on each end, used to join two male-threaded ports or pipe nipples of the same size back to back. Where the standard BU body is nickel plated, this -S variant is machined from solid SUS304 stainless steel throughout, so nothing plating-related can flake, corrode or shed copper into the circuit.
It belongs to AirTAC's metal pipe-joint family, not the one-touch resin line, and the ratings show it: 3.0 MPa proof pressure, working pressure 0-1.0 MPa, vacuum down to -750 mmHg, and a service temperature of 0 to 150 C. That combination is why this part appears around ovens, dryers and hot process plant where a push-in plastic fitting would soften or burst. The thread code 02 means 1/4in; a blank in the code means PT thread.
Airtac BU Double Female Thread Straight Connector BU0202-S Technical Specifications
| Model | Airtac BU Double Female Thread Straight Connector BU0202-S |
|---|---|
| Type | Double female connector |
| Series | BU |
| Connection | Threaded both ends |
| Body material | Stainless steel 304 (-S variant) |
| 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. Stainless (-S): SUS304 body throughout, for copper-free and corrosive environments. Pressure and temperature ratings are unchanged from the nickel-plated version. 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-S
| 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. |
| -S | Stainless-steel body. |
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-S Is Used
Bakery oven air lines
Cylinder and valve supply joints near baking ovens and proofers, where ambient temperatures above the 70 C ceiling of resin one-touch fittings would fail but this 150 C-rated stainless body holds.
Plating and surface-treatment shops
Copper-free SUS304 construction keeps the air supply clean around plating tanks and rinsing stations, while the 3.0 MPa proof pressure covers aggressive wash-down pump surge.
Marine deck equipment
Salt-laden air quickly pits a plated brass joiner; a solid 304 body on hatch-closer and winch-control circuits resists corrosion without any published coating to wear off.
Is the Airtac BU Double Female Thread Straight Connector BU0202-S the Right Part?
Size your circuit by the port, not the tube: this is a thread-to-thread part and takes no tubing at all. Within the BU family only same-size versions exist - 0101 (1/8in), 0202 (1/4in), 0303 (3/8in) and 0404 (1/2in). Step down to BU0101-S for 1/8in instrument taps, or up to BU0303-S for 3/8in mains; there is no reducing BU, so if the two ports differ in size, build the join from a BB male connector or a BD male-and-female connector instead.
Choose this over the nickel-plated BU0202 when the joint lives in wash-down, marine or plating environments, or wherever copper in the air stream is unacceptable - electronics and certain plating and food processes. The dimensions match the standard part exactly, so it is a direct swap; do not expect a different pressure or temperature figure, because the ratings are identical.
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-S FAQ
It is a SUS304 stainless double female connector with a 1/4in PT female thread on both ends. 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 stainless body carries exactly the same ratings as the standard nickel-plated BU0202; the -S suffix changes the material, never the figures.
No. The BU range is built in matched pairs only - 0101, 0202, 0303 and 0404 - so both female threads on the BU0202-S are 1/4in PT by design. For a reducing join, take a BD male-and-female connector (for example BD0203, 1/4in female to 3/8in male) or make it up from a BB male connector. AirTAC publishes no tightening torque for these joints; assemble with standard good practice for PT threads and a suitable sealant.
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