Airtac PV Series L-Type Elbow Fitting PV4D
The AirTAC Airtac PV Series L-Type Elbow Fitting PV4D is a genuine union elbow for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeUnion elbow
- SeriesPV
- 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 PV Series L-Type Elbow Fitting PV4D
The PV4D is an AirTAC PV union elbow, a tube-to-tube one-touch fitting with no thread at all. It joins two lengths of 4 mm OD soft nylon or polyurethane tubing at a clean 90 degrees: push each tube home and the internal chuck grips it, press the release ring and it lets go. The D suffix in the code means this part is moulded in black, and on the PV series that applies to the body, not just a button.
It runs on the resin/brass spec profile: working pressure 0 to 1.0 MPa, usable down to -750 mmHg (10 Torr) of vacuum, proof pressure 1.5 MPa, temperature -20 to +70 C. At 4 mm bore it is the small-air end of the range, so size it for pick-and-place cups, pilot signals and light actuation rather than high-flow cylinder feed lines. Because it is a union, neither side carries pipe sealant - only threaded AirTAC parts arrive pre-coated.
Airtac PV Series L-Type Elbow Fitting PV4D Technical Specifications
| Model | Airtac PV Series L-Type Elbow Fitting PV4D |
|---|---|
| Type | Union elbow |
| Series | PV |
| 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 PV Series L-Type Elbow Fitting PV4D
| PV | Union 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. |
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 PV Series L-Type Elbow Fitting PV4D Is Used
Analytical instrument vacuum lines
A 90-degree turn between a small vacuum ejector and sample tubing inside a compact analyser housing, where the -750 mmHg rating and a tiny 4 mm envelope matter more than flow.
Miniature gripper routing on a robot arm
Turning a 4 mm drop line 90 degrees at a small parallel gripper on a SCARA robot, keeping the hose run flat against the arm and clear of the wrist joint.
Pilot signal corner in a control cabinet
Neat right-angle routing of a 4 mm pilot tube behind a valve manifold inside a packaging machine control cabinet, avoiding a kink where the hose changes direction.
Is the Airtac PV Series L-Type Elbow Fitting PV4D the Right Part?
Dia 4 is the smallest tube size AirTAC makes in the PV series - there is no 3.2 mm union elbow below it (that size exists only on the PC and PL mini lines). The next step up is PV6 for Dia 6 tube, which gives you roughly twice the bore area for faster cylinder response and lower pressure drop. If you need to join two different sizes in an elbow, PV will not do it; that is the job of a different-diameter fitting such as PEG or PEW.
Tube OD must match the fitting exactly: this elbow holds 4 mm tube and nothing else, and forcing a 6 mm tube in will not seal. On the thread side there is nothing to match - if your port needs a male thread instead, look at an elbow with a stud such as the PL series.
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 PV Series L-Type Elbow Fitting PV4D FAQ
PV4D is a Dia 4 union elbow for two lengths of 4 mm OD soft nylon or polyurethane tube, with no thread. Working pressure 0 to 1.0 MPa (0-10 kgf/cm2), negative pressure down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, temperature -20 to +70 C. The body is moulded in black because of the D suffix; O-ring seal is NBR.
No. Every PV union elbow joins two tubes of the same OD, so PV4D is 4 mm on both legs. To change diameter in a run, use AirTAC's different-diameter fittings - a PG straight reducer, a PEG or PEW tee, or a PYW union Y - and match each tube size exactly on its own leg.
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