Airtac M5PF Flat Head Push Button Mechanical Valve M5PF21006B
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5PF Flat Head Push Button Mechanical Valve M5PF21006B is a genuine 5/2-way flat button type control valve. A flush button, hard to operate by accident. It is an external control, direct-acting valve - the spool is moved mechanically, so there is nothing to wire and no pilot line to plumb. Ports are PT1/8 with a 9.0 mm2 (Cv 0.50) effective area.
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Specifications
| Model | M5PF21006B |
|---|---|
| Valve type | 5/2 way, external control, direct acting |
| Actuation | Flat button type |
| Reset | Automatic (spring) restoration |
| Body series | 200 Series, single control |
| Port size | PT1/8 |
| Effective area | 9.0 mm2 (Cv 0.50) |
| Button colour | Black |
| Fluid | Air, filtered by a 40 um element |
|---|---|
| Pressure range | 0 - 1.0 MPa (0 - 145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature | -20 to +70 C |
| Body material | Aluminium alloy |
| Lubrication | Not required |
| Thread standard | PT (Rc tapered) |
| Spool stroke | 2.0-3.3 mm |
| Actuator stroke | 3.8-5.1 mm at the button |
Sliding-column (spool) construction, so operating force is not affected by working pressure - there is no back-pressure effect. Lubrication is not required, but once the valve has been run on lubricated air it must stay on lubricated air; AirTAC suggests ISO VG32 or equivalent. The control set is engineering plastic and must be operated by hand only - never switch it by striking it with a tool. The exhaust outlet sits on top of the body, so a silencer fits directly.
About the M5PF21006B
The M5PF21006B is a 5/2 way external control, direct acting valve that is operated entirely by hand: a flush black button, pushed by a fingertip or palm. There is no coil and no pilot port, so it cannot be confused with a solenoid valve - the spool moves only when someone presses the button. It sits on the 200 series single control body with a PT1/8 port.
Releasing the button lets the spring snap the spool back automatically, so the valve is a momentary two-position switch rather than a latch. The engineering plastic control set is rated for manual operation only - AirTAC forbids striking it with a tool - so keep it to thumb and palm duty. Because the spool is a sliding column, the changeover force does not rise with working pressure, and the exhaust port on top of the body takes a silencer directly. Flow is 9.0 mm2 effective area (Cv 0.50).
Typical applications
Carton sealer cycle start
On a packaging line sealing cartons, an operator presses the flush black button to fire the clamp-and-seal cycle. The flush profile means a trailing sleeve or the corner of the next carton cannot trigger a cycle by brushing past.
Assembly jig clamp initiation
At a bench fixture where pneumatic swing clamps close over a machined part, the momentary spring-return button keeps clamping strictly under operator control - release the button and the valve reverts, so no clamp can be left energised from a forgotten press.
Cylinder test bench
In a maintenance workshop proving out rebuilt pneumatic cylinders, the flat button gives the technician one deliberate press per stroke test, with the top-mounted exhaust port accepting a silencer so bench testing stays quiet.
How to choose
The real choice here is PF versus PP. Both are momentary buttons on the same 210 body, but the PF button sits flush with its collar, so a sleeve, falling offcut or passing elbow cannot trip it by accident - you get the cycle when you decide to press. Pick PP or PM if you want the largest, easiest target for a fast two-hand style station. If the machine must remember the state, step up to the PL latching type instead, which holds until twisted.
On sizing, this 210 body with PT1/8 gives 9.0 mm2 (Cv 0.50); the smaller 110 body drops to 8.0 mm2 and the 210 with PT1/4 rises to 12.0 mm2 (Cv 0.67) for larger cylinders. Do not overtravel the button: the spool stroke is 2.0-3.3 mm and total button stroke 3.8-5.1 mm. Pressing past these published limits damages the valve.
Frequently asked questions
It is a 5/2 way external control, direct acting valve with a flat (PF) black button on the 200 series body, PT1/8 port. Working pressure is 0-1.0 MPa (0-145 psi), proof pressure 1.5 MPa (215 psi), and media temperature -20 to +70 C with 40 um filtered air. Effective area is 9.0 mm2 (Cv 0.50) and the aluminium alloy body needs no lubrication, though if lubricated air is introduced, ISO VG32 should continue for valve life.
AirTAC publishes the reversal stroke as a hard limit: the spool travels 2.0-3.3 mm and the total button stroke is 3.8-5.1 mm. Exceeding these figures is stated by AirTAC to damage the valve, so the stop face behind the button must be respected in any panel cutout or guard design. Also remember the PF control set is engineering plastic and manual operation only - never strike it with a mallet or tool to change the valve over.