Airtac M5PL Detent Rotary Push Button Type Mechanical Valve M5PL21006G
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5PL Detent Rotary Push Button Type Mechanical Valve M5PL21006G is a genuine 5/2-way latching type control valve. Press to latch, twist the button to release. Manual restoration, red only. 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 | M5PL21006G |
|---|---|
| Valve type | 5/2 way, external control, direct acting |
| Actuation | Latching type |
| Reset | Manual restoration - press to latch, turn to release |
| Body series | 200 Series, single control |
| Port size | PT1/8 |
| Effective area | 9.0 mm2 (Cv 0.50) |
| 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 | 5.9-7.2 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 M5PL21006G
The M5PL21006G is a 5/2-way external control, direct acting valve that is thrown entirely by hand - there is no coil, no pilot port and no electrical connection anywhere on it. Its actuator is a green latching button on the 200 Series single-control body: you press the button once and the spool stays in the new position, then you twist the button to release it back. The green head is the colour code on the 210 body, which takes a 1/8in PT thread and gives an effective orifice area of 9.0 mm2 (Cv 0.50).
Because the valve latches, the switched state survives a hand moving away, an air drop or an operator walking off mid-shift - only a deliberate twist restores it. The sliding-column spool construction means the changeover force is not affected by working pressure, so there is no back-pressure effect and the button feels the same at 0.2 MPa as it does at 1.0 MPa. Note that this latching control set is engineering plastic and is rated for manual operation only: pressing with fingers or a palm is correct, striking it with a tool is forbidden by the manufacturer.
Typical applications
Jig isolation during tool change
Mount the latching valve at the fixture on a CNC milling cell. Press the green button to dump the clamp circuit and latch the jig off while the tooling is swapped, then twist to release and re-pressurise. The latched state cannot be lost by a bumped elbow.
Pallet clamp hold on a packaging line
On a carton palletiser, the PL holds the pallet clamp cylinders engaged through the whole wrap cycle without any signal being maintained. The operator twists the button only when the layer is complete and the station is to be cleared.
Taking a conveyor section offline
Feed each zone of a bottling hall conveyor through its own M5PL21006G. Latch a section out for cleaning or jam clearing, and the rest of the line keeps running on air alone - no electrical isolation procedure needed for a purely pneumatic branch.
How to choose
Choose PL when the state must HOLD until someone deliberately releases it. If you want a momentary pulse instead, the M5PP protruding button on the same 210 body springs back automatically; if you want hold-on with a rotary action rather than press-then-twist, the M5HS selector switch is the neighbour to compare. Between bodies, the 210 with a 1/8in port (9.0 mm2, Cv 0.50) suits small and medium cylinders, while stepping to the 08 code buys a 1/4in port and 12.0 mm2 (Cv 0.67) for faster exhaust on bigger bores. Respect the published reversal stroke: the spool travels 2.0-3.3 mm and the button travels 5.9-7.2 mm - pressing past these limits damages the valve, so a firm thumb press is enough, never a hammer blow.
Frequently asked questions
It is a 5/2-way external control, direct acting, mechanically latched valve on a 200 Series aluminium body with a 1/8in PT port. Operating pressure is 0-1.0 MPa (0-145 psi) with a proof pressure of 1.5 MPa (215 psi), media temperature -20 to +70 C on filtered air (40 um element). Effective orifice area is 9.0 mm2, Cv 0.50. No coil, no pilot supply and no electrical rating apply - actuation is the green button alone.
The datasheet limits are 2.0-3.3 mm of spool stroke and 5.9-7.2 mm of button stroke. These are published maximums: exceeding them damages the valve mechanism. A firm finger or palm press that bottoms out at the button's own travel is all that is needed to latch. Also remember the release is a twist, not a second press, and the plastic control set is for manual operation only - never strike it with a tool.