Airtac PM Panel Mount Straight Coupling PM6D
The AirTAC Airtac PM Panel Mount Straight Coupling PM6D is a genuine bulkhead union for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeBulkhead union
- SeriesPM
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PM Panel Mount Straight Coupling PM6D
The PM6D is an AirTAC PM bulkhead union, the fitting designed to carry a Dia 6 mm air line through a sheet-metal panel or machine wall and join it to a second Dia 6 tube on the other side. It is a tube-to-tube part: both ends are push-in sockets, and the only thread is the M14x1 locknut that clamps the body to the panel. This D variant comes with a black body rather than the standard grey.
Installation is genuinely one-touch: drill the panel hole, pass the threaded neck through, run the M14x1 locknut down and tighten, then push each Dia 6 tube home until it stops. Inside each socket a stainless spring gasket seats against the tube and a POM chuck with an aluminium-alloy guide grips the OD; press the release ring and the tube slides free. This is the resin-brass profile: 0-1.0 MPa working pressure, -750 mmHg vacuum capability, 1.5 MPa proof pressure and a -20 to +70 C service window. The thread arrives pre-coated with sealant.
Airtac PM Panel Mount Straight Coupling PM6D Technical Specifications
| Model | Airtac PM Panel Mount Straight Coupling PM6D |
|---|---|
| Type | Bulkhead union |
| Series | PM |
| 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.
Model Code: Airtac PM Panel Mount Straight Coupling PM6D
| PM | Bulkhead union. |
|---|---|
| 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. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac PM Panel Mount Straight Coupling PM6D Is Used
Control cabinet pass-through
Take a Dia 6 supply line cleanly through the wall of an electrical enclosure so pneumatic plumbing stays outside and the wiring loom inside stays untouched - the M14x1 locknut seals the hole without adapters.
Semi-automatic assembly bench
Distribute air from a bench-mounted manifold through the worktop to shutoff valves and small Dia 6-fed cylinders on the fixture side, keeping the tube run accessible for changeover.
Vacuum test rig panels
Route Dia 6 vacuum lines through the back plate of a leak-test or pick-and-place fixture; the fitting is rated to -750 mmHg (10 Torr), so the same bulkhead joint serves the vacuum leg of the rig.
Is the Airtac PM Panel Mount Straight Coupling PM6D the Right Part?
Dia 6 sits one step up from the smallest bulkhead union in the ladder. Step down to PM4 for M12x1 locknut circuits feeding light pilot duties, or step up to PM8 where the M16x1 locknut and a wider bore serve a bigger actuator; the panel hole and the flow path both grow with the tube. Never try to run 1/4 in (6.35 mm) OD tubing in this Dia 6 socket - the chuck and gasket are cut for exactly 6 mm and a near-miss OD will not seal or hold.
Choose the PM shape when two tubes must meet through a barrier and you have no threaded port to adapt to. If you need a port thread on the far side of the panel instead, that is the job of a PMF bulkhead connector; if the line simply has to turn along the panel, look at the PV union elbow.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
Airtac PM Panel Mount Straight Coupling PM6D FAQ
The PM6D is a PM bulkhead union for Dia 6 mm tubing on both ends, with an M14x1 panel locknut. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it holds -750 mmHg (10 Torr) in vacuum, proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. It suits soft nylon or polyurethane tube, and the D suffix gives it a black body.
Drill a hole that suits the M14x1 neck, slip the body through with its seal on the panel face, and run the locknut down from the rear until the fitting is clamped solid - AirTAC publishes no tightening torque, so stop at a firm, sealed fit rather than over-compressing the seal. Then push the Dia 6 tubes into each socket until they bottom out. The thread arrives with sealant applied, and one-touch release lets you service either line later without disturbing the panel mounting.
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