Airtac M5PP Poppet Push Button Mechanical Valve M5PP21008BG
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5PP Poppet Push Button Mechanical Valve M5PP21008BG 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 | M5PP21008BG |
|---|---|
| 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 | 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 | 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 M5PP21008BG
The M5PP21008BG is a 5/2-way external control, direct acting valve with no solenoid coil and no pilot port - the spool is thrown by a hand pressing the raised protruding button. This is the 210-series body with a black button and G thread, giving a 1/4 inch parallel port. It belongs in purely pneumatic circuits, manual start stations, and anywhere electricity is unavailable, unwanted or unsafe.
Release the button and the spring snaps the spool straight back, so this is automatic restoration: press to send air one way, let go and the valve reverts by itself. The sliding-column spool means the force needed to change over does not rise with working pressure, so a light press feels the same at 0.2 MPa as at 0.8 MPa. The 1/4 inch port gives a 12.0 mm2 effective area (Cv 0.67), and because the exhaust outlet sits on top of the body, a silencer screws straight on for quiet running.
Typical applications
Bench press cycle start
On a pneumatic assembly press, the operator's palm presses the protruding black button to advance the ram; the spring returns the spool at the end of each stroke so the press cannot creep forward between cycles.
Carton-sealer jog control
Fitted at the infeed of a carton taping machine, the raised button lets an operator jog the belt forward to square up a box - press to move, release to stop, no electrical buttons in the wash-prone zone.
Welding fixture clamping
Mounted beside a jig on a fabrication bench, the button extends the pneumatic clamps for a tack weld and the spring retracts them the moment the hand lifts, so clamps release if the operator is interrupted.
How to choose
Choosing between button types is really choosing how easy the valve should be to hit: the PP protruding button stands above the panel so a gloved hand finds it by feel, the PF flat button sits flush and is picked specifically because it resists accidental operation, and the PM mushroom head is for a full palm strike without looking. If the state must HOLD while the operator walks away, you need the PL latching type instead, not a spring-return PP. This SKU is the 210 body at 1/4 inch with 12.0 mm2 (Cv 0.67) of flow area; the 110 body at 1/8 inch offers only 8.0 mm2, so step up to 210 when the downstream cylinder is large. Mind the reversal stroke: spool travel is 2.0-3.3 mm and the button stroke is 3.8-5.1 mm - exceeding it damages the valve, so depth of the button in your panel or bracket matters.
Frequently asked questions
It is a 5/2-way external control, direct acting valve with a protruding black button on the 210-series body and G1/4 parallel ports. Working pressure is 0-1.0 MPa (0-145 psi), proof pressure is 1.5 MPa (215 psi), and the temperature range is -20 to +70 C. The effective area is 12.0 mm2 (Cv 0.67). Air should be filtered to 40 um; no lubrication is needed, but once lubricated air is used, continue with ISO VG32 grade to optimise valve life.
The published reversal stroke is 2.0-3.3 mm for the spool and 3.8-5.1 mm for the button; AirTAC states explicitly that exceeding these limits damages the valve, so mount it so a full palm press bottoms out within that travel. The PP control set is engineering plastic and is for manual operation only - switching it by striking with a tool is forbidden in the datasheet. Spare control sets can be ordered separately, and body and panel mounting are both supported.