The AirTAC Airtac PHF Tandem Toggle Joint PHF804-S is a genuine universal female elbow for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
The PHF804-S is an AirTAC PHF universal female elbow from the resin one-touch range. It joins Dia 8 mm soft nylon or polyurethane tube to a 1/2 in PT female threaded port. Push the tube straight into the collet chuck until it bottoms out and the stainless spring gasket and NBR O-ring seal around it; press the POM release ring to free the tube again.
The -S suffix means the threaded stud is SUS304 stainless steel, while the elbow body stays PBT and the guide stays aluminium alloy - so this is a corrosion-resistant stud, not a solid stainless body. Ratings are unchanged from the standard grey part: 0-1.0 MPa working pressure, 1.5 MPa proof pressure, vacuum down to -750 mmHg, and -20 to +70 C.
| Model | Airtac PHF Tandem Toggle Joint PHF804-S |
|---|---|
| Type | Universal female elbow |
| Series | PHF |
| Connection | Push-in one-touch |
| 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 | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. Stainless (-S): SUS304 in place of brass - a solid SUS304 body on the PC and POC straight connectors, and a PBT body with a SUS304 stud on the elbow, tee and branch shapes. Working pressure, proof pressure and temperature are unchanged from the standard version. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
| PHF | Universal female elbow. |
|---|---|
| 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. |
Where a plated male stud would rust under daily hose-down, the SUS304 stud on the PHF804-S takes a 1/2 in female port on the frame and drops an 8 mm tube run to a suction cup or sensor block below it.
On a small pneumatic manifold with a male threaded outlet, the female elbow seals on arrival with its pre-applied thread sealant, and the swivel lets the 8 mm tube leave sideways instead of fouling the machine guard.
Test rigs and lab fixtures often present a male threaded spud at an awkward angle; the PHF804-S screws straight onto it and the universal body re-orients the 8 mm nylon line to the instrument without re-bending the tubing.
On the 1/2 in female thread, Dia 8 mm is actually the smallest tube AirTAC offers this part in - the PHF 1/2 in ladder runs only 8, 10 and 12 mm, so there is no PHF604. Step up to PHF1004 for a 10 mm tube feeding a larger-bore circuit, or step down to PHF803 if a 3/8 in female port is what the machine actually has. The tube OD must match exactly: this fitting will not grip 1/4 in (6 mm) hose.
Choose the female elbow over the male PH when the mating port is already a male stud or a bolt with a male thread - the pre-applied thread sealant does the sealing for you, and the universal joint lets you rotate the outlet to point the tube run the way the machine needs before you push the tube home.
Quick checklist
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, vacuum capability -750 mmHg (10 Torr), operating temperature -20 to +70 C. It takes Dia 8 mm soft nylon or polyurethane tube and has a 1/2 in PT female thread. The stud is SUS304 stainless; the body is PBT. The ratings are identical to the standard grey PHF804 - the -S changes the stud material only.
Yes: the female thread is made to receive a male stud or bolt port, and it arrives with sealant already on the thread. On the 1/2 in thread Dia 8 mm is the smallest tube available, so to go smaller you move to a 3/8 in port (PHF803); to move up in bore on the same 1/2 in port, choose PHF1004 or PHF1204 for 10 mm or 12 mm tube.
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