
The AirTAC Airtac PH-1 Hex Head Toggle Joint PH4M5 is a genuine universal male elbow for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
The PH4M5 is an AirTAC PH universal male elbow, a one-touch fitting that joins Dia 4 mm soft nylon or polyurethane tubing to an M5x0.8 male port. Push the tube into the chuck and the internal gasket springs onto it for a sealed grip; press the POM release ring and the tube frees without tools. Unlike a fixed elbow, the PH head swivels, so you can aim the tube exit in any direction before final tightening - useful where a straight connector would force a tight tube bend.
This is the resin/brass one-touch profile: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a temperature window of -20 to +70 C. The threaded portion is PBT with a brass stud and arrives with a sealing gasket for the M5 thread rather than applied sealant, so the small port does not clog with paste during installation.
| Model | Airtac PH-1 Hex Head Toggle Joint PH4M5 |
|---|---|
| Type | Universal male elbow |
| Series | PH |
| 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.
| PH | Universal 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. |
Miniature ejectors and pilot valves on pick-and-place heads commonly carry M5 ports. The PH4M5 screws straight in, and the swivel head lets the Dia 4 supply tube route away from the suction cup without a sharp twist.
Sample-handling modules in diagnostic and laboratory equipment use small-bore Dia 4 lines at low pressure. The gasket-sealed M5 thread keeps sealant out of clean internal passages, and the elbow solves tight internal routing.
Compact parallel grippers with M5 ports often sit close to fixtures where a straight fitting would kink the tube. The PH4M5 angles the Dia 4 line along the gripper body instead of into it.
Dia 4 is the smallest tube size AirTAC makes on the PH ladder, and on M5 it is one of only two options. If your line carries Dia 6 tube, step up to PH6M5; nothing below Dia 4 exists in this series, so this is the entry point of the range. If you are not locked to M5, the PH401 in 1/8in thread also accepts Dia 4 and gives you the same swivel behaviour on a taper-threaded port. Match the fitting to the tube OD exactly - a Dia 4 chuck will not grip 1/8in or 5/32in tube, and forcing it destroys the seal.
Choose the PH shape over a straight PC connector when the port faces a wall, a guard or another component and the tube needs to leave sideways or at an angle. On tiny M5 ports the sealing gasket matters: never wind PTFE tape onto the thread, because tape debris is a common cause of pilot-valve sticking on M5 connections.
Quick checklist
It is a PH universal male elbow for Dia 4 mm tube with an M5x0.8 male thread (PT standard family). Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it works down to -750 mmHg (10 Torr) vacuum, proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. It suits soft nylon or polyurethane tube only, and the M5 connection is sealed by a gasket.
No. The one-touch chuck and spring gasket are cut for Dia 4 mm OD exactly, and AirTAC's interface table offers only Dia 4 and Dia 6 tube on the PH with M5 thread. Off-size tube will either not enter or will leak and blow off under pressure. Move to PH6M5 for Dia 6 tube, or to a 1/8in PH fitting if your thread is taper rather than M5.
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