
The AirTAC Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF804 is a genuine bulkhead connector for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
The PMF804 is an AirTAC PMF bulkhead connector, the one-touch fitting made to carry an airline through a solid wall. It takes Dia 8 mm soft nylon or polyurethane tube on the push-in side and offers a 1/2in PT male thread on the other face. You drill a panel hole, pass the threaded stud through, and secure it with the dedicated bulkhead locknut - on Dia 8 fittings that locknut thread is M16x1, a detail worth knowing before you drill.
Connection is the standard one-touch action: push the tube home and the internal chuck grips it against the stainless spring gasket and NBR O-ring; press the POM release ring and the tube comes free. This is the resin and brass profile, not the metal BPC line - working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg, proof pressure 1.5 MPa, temperature -20 to +70 C. The 1/2in thread arrives with sealant already applied, and the standard body colour is grey.
| Model | Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF804 |
|---|---|
| Type | Bulkhead connector |
| Series | PMF |
| 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.
| PMF | Bulkhead 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. |
Mount the PMF804 through the side wall of an electrical enclosure on a packaging line so the 1/2in PT manifold connection stays inside with the valves while the 8mm tube runs out to the grippers, keeping cable and airline routing separated.
Pass the fitting through the sheet-metal guard of a rotary indexing table so pneumatic lines to the clamp cylinders inside can be disconnected from outside without opening the guard, using the push-in release ring on the 8mm tube.
Fix the bulkhead stud into the back panel of a lab analysis bench and distribute clean dry air from the 1/2in PT supply to multiple 8mm drop lines feeding small pneumatic actuators and sample-handling devices.
You have two ways to step from this SKU. On the tube side, PMF exists in Dia 6 and Dia 10 around this size: drop to 6 mm when the line on the far side of the panel feeds a small actuator or sensor port, go to 10 mm when the run is longer or the flow demand is higher - the bulkhead fitting itself is rarely the restriction, the bore is. On the thread side, the step down from 1/2in is PMF803 with a 3/8in PT stud, for manifolds and valve ports drilled at 3/8in. Remember PMF is never offered in M5, so a 1/2in stud like this one sits at the top of the thread ladder.
Match the 1/2in PT thread to a PT port or use a separate adapter; never force a BSPP or NPT nut onto it. And measure the tube before ordering: the chuck on this fitting holds exactly 8 mm OD tubing - a 5/16in or 1/4in tube will not seal in it, and tube OD must match the fitting size exactly.
Quick checklist
Working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. The fitting joins Dia 8 mm soft nylon or polyurethane tube to a 1/2in PT male thread and mounts through a panel on an M16x1 bulkhead locknut. This is the resin and brass one-touch profile with a grey body.
Drill a hole sized for the M16x1 locknut shank, insert the threaded stud from the inside or outside depending on which face needs the 1/2in PT thread, then tighten the bulkhead locknut against the panel. The push-in side is then ready for 8 mm tube. Because the tube seals on the chuck at the fitting face, the panel wall itself carries no pressure, so a relatively thin enclosure or guard wall is sufficient.
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