Airtac PL L Connector PL4M5-S
SUS304 stainless variant (-S)The AirTAC Airtac PL L Connector PL4M5-S is a genuine male elbow for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeMale elbow
- SeriesPL
- 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 PL L Connector PL4M5-S
The PL4M5-S is an AirTAC PL male elbow, the one-touch 90 degree fitting that turns a Dia 4 mm soft nylon or polyurethane tube into an M5x0.8 male thread. Push the tube into the chuck and the collet grips it for a pressure-tight joint; press the release ring and it slides straight back out. The body carries the resin one-touch spec: 0 to 1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure, -20 to +70 C.
The -S suffix makes this the SUS304 variant, and on the PL family that means the male stud - the part that screws into your port - is stainless steel 304 while the body itself stays PBT. That puts a corrosion-resistant, hard thread interface into humid or mildly aggressive plant air without changing the shape, size or rating of the fitting by a single figure. The whole catalogue is machined to PT thread standard, and because M5 is too small for pre-applied sealant, this size seals with a dedicated sealing gasket under the stud face.
Airtac PL L Connector PL4M5-S Technical Specifications
| Model | Airtac PL L Connector PL4M5-S |
|---|---|
| Type | Male elbow |
| Series | PL |
| 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.
Model Code: Airtac PL L Connector PL4M5-S
| PL | Male 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. |
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 PL L Connector PL4M5-S Is Used
Gripper and pick-and-place heads
Small pneumatic grippers and compact air cylinders on electronics assembly heads commonly carry M5 ports; a 90 degree male elbow lets Dia 4 polyurethane tube drop straight down the tooling column instead of fouling the end-effector envelope.
Lab and analyser instrumentation
Valve islands and reagent manifolds in analytical instruments use M5 ports with 4 mm tubing; the SUS304 stud on this variant resists the humid, mildly corrosive ambient found around wash-down benches and wet chemistry enclosures.
Packaging machine pilot lines
Pilot signals taken off a directional control valve on a food packaging machine can be routed through this elbow at the port face, turning the 4 mm signal tube cleanly along the frame instead of leaving it bent at a sharp angle against the valve body.
Is the Airtac PL L Connector PL4M5-S the Right Part?
Dia 4 is the smallest tube the PL elbow accepts, so there is no step down on this prefix - check instead whether you actually need the single step up, the PL6M5-S, which doubles the bore on the same M5 port if flow feels starved. If your port is larger, the same Dia 4 tube is also offered on 1/8 in thread as the PL401-S. On the M5 thread AirTAC makes only Dia 4 and Dia 6, so anything bigger than 6 mm pushes you onto 1/8 in or larger ports.
Two rules worth checking before ordering: tube OD must match exactly, so a Dia 4 chuck will not hold 6 mm or 1/4 in tube no matter how hard you push it in, and the M5 stud seals by gasket face rather than thread tape - adding PTFE can actually stop the gasket from seating.
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 PL L Connector PL4M5-S FAQ
Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, temperature -20 to +70 C. The fitting accepts Dia 4 mm soft nylon or polyurethane tube and provides an M5x0.8 male thread on the PT standard. The stud is SUS304; the body is PBT with a POM release button, aluminium-alloy guide, stainless spring gasket and NBR O-ring.
No. Compared with the standard PL4M5, the stainless version keeps identical dimensions, identical pressure, vacuum and temperature ratings, and the same PBT body - only the male stud is upgraded from brass to SUS304. It is also worth knowing that the M5 thread seals through a dedicated sealing gasket rather than pre-applied thread sealant, which is why the larger PT-threaded sizes arrive with sealant but this size does not.
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