Airtac M5PP Poppet Push Button Mechanical Valve M5PP21008R
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5PP Poppet Push Button Mechanical Valve M5PP21008R is a genuine 5/2-way protruding button type control valve. A raised button - quick to find, still guarded against a full palm strike. 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 PT1/4 with a 12.0 mm2 (Cv 0.67) effective area.
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Specifications
| Model | M5PP21008R |
|---|---|
| Valve type | 5/2 way, external control, direct acting |
| Actuation | Protruding button type |
| Reset | Automatic (spring) restoration |
| Body series | 200 Series, single control |
| Port size | PT1/4 |
| Effective area | 12.0 mm2 (Cv 0.67) |
| Button colour | Red |
| 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 M5PP21008R
The M5PP21008R is a 5/2 way, external control, direct acting pneumatic valve with no coil, no pilot port and no wiring of any kind. It is thrown mechanically: a raised red protruding button is pressed by hand, and an internal spring throws the spool back the moment you lift off. The 210 body carries 1/4in PT ports and a 12.0 mm2 effective orifice (Cv 0.67), the largest flow in the M5 common-type range.
Because the sliding-column spool is worked directly by the button, the changeover force is not affected by working pressure - there is no back-pressure effect, so the valve feels and switches the same at 0.2 MPa as it does at 1.0 MPa. The engineering plastic control set is rated for manual operation only, so operate it with a palm or finger, never by striking it with a tool. The exhaust outlet sits on top of the body, so a silencer screws straight in without re-plumbing. Body and panel mounting are both supported, and replacement control sets are available as spares.
Typical applications
Bench drill press clamp circuit
A protruding button on the machine bench opens and closes the pneumatic clamp on a drill jig: press to extend the clamp, release and the spring returns the valve to vent it. No electrical enclosure needed next to the coolant-soaked bench.
Blow-off station at a CNC lathe
Mounted beside the ways, the PP button actuates a 5/2 circuit driving a chip-blowing nozzle. The raised red button is easy to locate by feel mid-cycle, and the top-mounted exhaust takes a silencer right at the station.
Packaging bench cycle start
At a carton sealing bench, an operator presses the protruding button to trigger the cylinder that advances the tape head. Spring restoration guarantees each cycle starts from the same neutral position, so a jam cannot leave the circuit latched.
How to choose
The protruding button sits between two siblings in the same 210 body. Choose the flat PF button where the valve must resist accidental operation on a crowded panel, the mushroom PM head where an operator has to hit it with a palm without looking, and this PP protruding button as the middle road - easy to find and press deliberately, still needing a conscious push. If the state must hold until released, step across to the latching PL or the selector HS instead, both of which are manual restoration.
On flow, the 210 body at 1/4in gives 12.0 mm2 (Cv 0.67); the 1/8in version of the same body gives 9.0 mm2 (Cv 0.50) and the 110 body 8.0 mm2 (Cv 0.45), so size the port to the cylinder being fed. Do not overtravel the button: the spool stroke is 2.0-3.3 mm and the button stroke 3.8-5.1 mm, and pressing past these published limits damages the valve.
Frequently asked questions
It is a 5/2 way external control, direct acting valve with a red protruding button on the 210 body and PT1/4 ports. Operating pressure is 0-1.0 MPa (0-145 psi), proof pressure 1.5 MPa (215 psi), and temperature range -20 to +70 C with filtered air. The effective area is 12.0 mm2 (Cv 0.67), the largest orifice in the M5 common-type range. Reset is by spring, body is aluminium alloy, and no lubrication is required - though if lubricated air is used, keep using the same medium, ideally ISO VG32.
AirTAC publishes reversal stroke limits and exceeding them damages the valve. For this model the spool stroke is 2.0-3.3 mm and the button (actuator) stroke is 3.8-5.1 mm. The button is plastic and rated for manual hand operation only - never strike it with a mallet, bar or machine part, as that is outside the datasheet rating. If you need repeated mechanical tripping by a moving carriage, choose the roller type M5R or M5L instead of a hand button.