The AirTAC Airtac PHF Tandem Toggle Joint PHF804D-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 PHF804D-S is an AirTAC universal female elbow from the resin one-touch range: it terminates a Dia 8 mm soft nylon or polyurethane tube into a 1/2in PT female port at a right angle, with a swivelling female thread so the body can be aimed after the port is made up. To connect, push the tube into the chuck until it bottoms; the stainless spring gasket and grip ring hold it against both pressure and vacuum, and the release ring frees it again when you need to re-route. The D suffix gives this size a black body rather than the standard grey.
This is the -S variant, and it is worth knowing exactly what that means here: on PHF parts the stainless upgrade is in the SUS304 stud, while the elbow body stays PBT and the dimensions match the grey version exactly. The ratings are the standard resin-line figures, not the metal BP numbers: 0-1.0 MPa (0-10 kgf/cm2) working, 1.5 MPa proof, -750 mmHg (10 Torr) vacuum and -20 to +70 C. Every pressure-carrying seal is an NBR O-ring, and the female thread arrives with sealant already applied.
| Model | Airtac PHF Tandem Toggle Joint PHF804D-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. |
On a palletizer's vacuum-gripper manifold, the 1/2in female port is often welded facing the wrong way. The swivelling PT nut lets you rotate the elbow body to point the Dia 8 drop at the gripper line without twisting the tube or re-tapping the port.
Seafood wash-down areas attack bare brass studs at panel fixings. The SUS304 stud on this -S version takes the corrosive load at the port interface while the PBT body shrugs off salt-laden spray on the same 0-1.0 MPa air circuit.
Behind the guard of a six-axis welding cell, space for a straight connector plus a bend radius rarely exists. This female elbow turns the Dia 8 feed 90 degrees directly at the valve manifold port, keeping the tube run clear of the dress pack.
On the 1/2in PT rung of the PHF ladder, Dia 8 is the smallest tube available - stepping down in bore means dropping the thread to 3/8in as well (a PHF603 pattern). Going up, Dia 10 and Dia 12 tubes share this same 1/2in port, so if the port is already drilled and tapped you can later upsize the supply by changing only the fitting. Tube OD must match the code exactly: a Dia 8 chuck will not seal on 1/4in (6 mm) or 5/16in (8 mm nominal) tube sold to other standards, so check the printed OD on the reel before ordering. If you do not need the swivel, the fixed PLF female elbow covers the same tube and thread pair in a lighter, shorter body.
Quick checklist
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure is 1.5 MPa, negative pressure is -750 mmHg (10 Torr) and the temperature range is -20 to +70 C. The fitting joins a Dia 8 mm tube to a 1/2in PT female port. These are the standard resin one-touch ratings - the -S suffix changes the stud material to SUS304, not the performance figures.
No, and the distinction matters for material compatibility. On PHF-family -S parts the stud that screws into your port is SUS304; the elbow body remains PBT and the seals stay NBR, so the part is dimensionally identical to the grey PHF804D. If you need an all-stainless body on a straight connector, that construction is offered on the PC and POC -S patterns instead.
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