Airtac M5PP Poppet Push Button Mechanical Valve M5PP21008G
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5PP Poppet Push Button Mechanical Valve M5PP21008G 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 | M5PP21008G |
|---|---|
| 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 | Green |
| 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 | G (BSPP parallel) |
| 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 M5PP21008G
The M5PP21008G is a 5/2 way external control, direct acting valve thrown by hand - a raised green button on a 200 series body, not a solenoid coil and not an air pilot signal. There is nothing electrical on this valve at all: no coil, no pilot port, no wiring. Press the protruding button and the spool shifts to feed one cylinder port and exhaust the other; let go and the spring snaps it back automatically. Because the construction is a sliding-column spool, the control force is not affected by working pressure, so the changeover feels the same at 0.2 MPa as it does at a full 1.0 MPa.
The 210 body carries a PT1/4 thread and an effective area of 12.0 mm2 (Cv 0.67), the largest flow in the M5 common type range. The exhaust outlet sits on top of the body, so a silencer screws straight in without re-plumbing the manifold. Body and panel mounting are both supported, replacement control sets can be ordered as spares, and the PP control set is engineering plastic - this is a manual-operation valve, and the datasheet explicitly forbids striking the button with a tool.
Typical applications
Pallet degate at the palletiser outfeed
An operator strikes the raised green button to drop a pallet stop and release a loaded pallet; spring reset re-arms the stop before the next pallet arrives, so the cell needs no electrical interlock at all.
Bench crimp fixture clamp
At a small crimping or staking bench the protruding button is tripped with a palm to advance the clamp cylinder and released on the upstroke, keeping the station powered by nothing but air.
Reject pusher on an inspection conveyor
A quality inspector palms the green button to fire a pusher cylinder that kicks a failed part off the belt; the spring return retracts the pusher immediately so the following part is never affected.
How to choose
Choose between the button styles by how easy the valve should be to hit. The PP protruding button stands proud of the panel so a palm or knuckle finds it without looking; the PF flat button sits flush to resist accidental operation; the PM mushroom head gives the largest target of all. If the state must hold rather than spring back, step across to the PL latching type or the HS selector. If 1/4 in is oversized for the cylinder, the same protruding button on a 1/8 in port drops to Cv 0.50 on the 210 body (M5PP21006) or Cv 0.45 on the 110 body (M5PP11006). Mind the reversal stroke: the spool travels 2.0-3.3 mm and the button 3.8-5.1 mm - exceed these published figures and the valve is damaged.
Frequently asked questions
It is a 5/2 way external control, direct acting valve with a green protruding button on a 200 series body, PT1/4 ports and an effective area of 12.0 mm2 (Cv 0.67). Working pressure is 0-1.0 MPa (0-145 psi), proof pressure 1.5 MPa (215 psi), and the temperature range is -20 to +70 C with air filtered by a 40 um element. The body is aluminium alloy and the spool returns by spring when the button is released.
The published reversal stroke is 2.0-3.3 mm at the spool and 3.8-5.1 mm at the button. AirTAC states explicitly that exceeding these limits damages the valve, so any strike plate or overtravel guard must stop within those figures. Note also that the PP control set is engineering plastic and rated for manual operation only - hitting it with a tool is forbidden.