
The AirTAC Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF601 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 PMF601 is an AirTAC PMF bulkhead connector, the female elbow of the one-touch range. It pushes a Dia 6 mm soft nylon or polyurethane tube straight into the chuck, while the 1/8in PT female thread on the elbow side takes a male stud or nipple on the other. Because the body is a bulkhead elbow, it passes through a hole in a panel or machine wall and is clamped from behind with a locknut, so the tubing is handled outside the enclosure and the pneumatic connection is made inside. For a Dia 6 bulkhead the locknut thread is M14x1, which is worth knowing before you cut the panel hole.
This is the resin and brass one-touch profile, not the metal BP line: working pressure 0-1.0 MPa, vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa and a temperature window of -20 to +70 C. The release button and chuck are POM, the guide is aluminium alloy, the spring gasket is stainless and the O-ring is NBR, with a brass stud carrying the female thread. Threaded portions arrive with sealant already applied, so no extra tape is needed at the port.
| Model | Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF601 |
|---|---|
| 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 PMF601 through the back wall of the filler's pneumatic cabinet: the Dia 6 tube runs to the outside logic, and the 1/8in female thread inside accepts the stud feeding the filler valve manifold.
On a fixture where the clamp valve sits behind a guard plate, the bulkhead elbow crosses the plate in one hole and its M14x1 locknut holds it rigid against vibration from the clamp actuator.
The -750 mmHg vacuum rating lets this elbow serve the pickup head of a vibratory parts feeder, with the Dia 6 vacuum tube routed neatly outside the feeder housing through the panel mount.
On the PMF ladder at 1/8in thread, the PMF601 sits between the PMF401 (Dia 4 tube, M12x1 locknut) below and the PMF801 (Dia 8 tube, M16x1 locknut) above. Stepping down shrinks the bore and the air you can move per pulse but suits compact curtain-edge and sensor lines; stepping up to Dia 8 feeds short-stroke cylinders with less restriction. If you want to step the port instead of the tube, the same Dia 6 tube is offered with a 1/4in female thread as the PMF602.
Choose a bulkhead shape only when tubing must cross a fixed wall: the fitting replaces a bulk pass-through plus a separate elbow, and the tube can be released from outside without reaching behind the panel. Match the tube OD exactly - a Dia 6 chuck will not grip 1/4in (6.35 mm) imperial tube, and near-miss sizes are the commonest cause of a weeping one-touch joint.
Quick checklist
Working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. It joins Dia 6 mm soft nylon or polyurethane tube to a 1/8in PT female thread, and the bulkhead locknut for Dia 6 is M14x1. This is the resin and brass one-touch profile, not the 0.9 MPa / 150 C metal BP line.
No extra sealing is required: AirTAC ships threaded one-touch parts with sealant already applied to the thread (only M5 sizes use a sealing gasket instead, which does not apply here). The tube must be exactly Dia 6 mm soft nylon or polyurethane; the stainless spring gasket and NBR O-ring grip and seal that OD only, so imperial 1/4in tube will not seat.
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