The AirTAC Airtac PHF Tandem Toggle Joint PHF804D 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 PHF804D is an AirTAC PHF universal female elbow, a swivelling right-angle one-touch fitting that joins Dia 8 mm soft nylon or polyurethane tube to a 1/2" PT female port. Push the tube into the chuck until it bottoms out and the stainless spring gasket and POM chuck grip it; press the release ring to free it again. Because the female thread is universal, the body can be rotated to the exact angle you need after the thread is tightened, so the tube always leaves the fitting in the direction the machine wants.
This is the D suffix version, so the body is black rather than the standard grey. It belongs to the resin and brass one-touch profile: 0-1.0 MPa working pressure (0-10 kgf/cm2), usable to -750 mmHg vacuum, 1.5 MPa proof pressure, and a -20 to +70 C operating range. Thread sealant is pre-applied at the factory, so the fitting is ready to make a PT joint straight onto a male-threaded port.
| Model | Airtac PHF Tandem Toggle Joint PHF804D |
|---|---|
| Type | Universal female elbow |
| Series | PHF |
| Connection | Push-in one-touch |
| 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. 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. |
Mould-side services on plastics machinery often present 1/2" tapped ports at awkward angles; the universal elbow swivels so a Dia 8 nylon drop line to a small actuator or air nozzle clears the clamp platen without fighting the pipe thread orientation.
On dobby and loom frames, run a Dia 8 polyurethane drop from an overhead 1/2" manifold into the black elbow at each station; the female PT port mates directly to the machine's existing tapped bosses and the black body hides scuffs in high-touch areas.
Where a control cabinet already carries 1/2" PT instrument ports, this elbow turns a Dia 8 tube run through 90 degrees with freedom to aim the outlet after fitting, keeping the tube away from the cabinet door swing.
On the 1/2" female thread, Dia 8 is the smallest tube PHF offers - the ladder above it runs 10 and 12 mm only, as in PHF1004 and PHF1204. Stepping up to 10 mm buys roughly 50% more bore area, so expect noticeably lower velocity in the same air line; there is no 6 mm option on this thread, so if you are stepping down you should also consider dropping the port to 3/8" or 1/4", both of which do take Dia 8 tube on PHF. Remember the tube OD must match exactly: a Dia 8 fitting will not seal or hold on 5/16" (8 mm is 8 mm, not an imperial equivalent).
Choose the PHF shape over a fixed PL elbow when the direction of the run is decided at installation time, not on the drawing - the swivel lets one stock part serve several mounting orientations. If the port faces into a panel and you need to pass through a wall instead, a PMF bulkhead female connector is the better answer.
Quick checklist
The PHF804D is a black AirTAC PHF universal female elbow for Dia 8 mm tube with a 1/2" PT female thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it works under vacuum to -750 mmHg (10 Torr), proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Applicable tubing is soft nylon or polyurethane.
The PHF's universal thread lets you rotate the outlet to any angle after the 1/2" PT thread is tightened, so a single part copes with installations where the port orientation and the tube route do not agree. A fixed PL elbow locks the outlet at 90 degrees to the thread with no adjustment, which is fine on drawings but frustrating on real machines. Both use the same one-touch chuck: push the tube in to grip, press the release ring to free it.
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