Airtac M5PL Detent Rotary Push Button Type Mechanical Valve M5PL21006
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5PL Detent Rotary Push Button Type Mechanical Valve M5PL21006 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 | M5PL21006 |
|---|---|
| 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) |
| 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 | 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 M5PL21006
The AirTAC M5PL21006 is a 5/2-way external control, direct acting valve with no coil and no pilot port - the spool is thrown by hand on a latching red button and it STAYS thrown until you deliberately release it. Press the button to latch the valve into its second position, then twist the button to spring it back out. This is a hand-operated control valve, not a solenoid valve and not an air pilot valve, which is exactly why it belongs in purely pneumatic circuits, manual stations and spots where electricity is unwanted or unsafe.
This is the 200 Series single control body (210) with a PT1/8 port and an effective area of 9.0 mm2 (Cv 0.50). Because the spool slides in a column rather than against line pressure, there is no back-pressure effect - the changeover feels and acts the same whether you run it near 0 MPa or up to 1.0 MPa. The exhaust outlet sits on top of the body, so a silencer screws straight in without adapters. The plastic control set is for manual operation only: the datasheet forbids striking it with a tool.
Typical applications
Isolating a welding jig during tool change
Press the red button once to latch the jig's clamping circuit into its safe state, carry out the die or fixture change, then twist to release and hand the station back to the cycle.
Hold position on a pneumatically fed press
Where a spring-return mushroom button would drop the circuit the moment the operator lets go, the PL latches so the downstream cylinder holds its extended or retracted state without a hand on it.
Setup mode switch on a filling line
Latched pneumatic switching lets a technician select a slow setup state on a bottle filling or capping machine and twist it back to production mode, with no electrical interlock in the loop.
How to choose
Choose the PL over the PM, PP or PF buttons when the valve must HOLD its switched state - those buttons pop back the instant you lift your palm, the PL waits for a twist to release. If you would rather have a rotary hold action, the HS selector switch does the same job with a turn instead of a press. On body and port: the 100 Series 110 body is the smaller alternative, and stepping this 210 body up to the 1/4" port raises the effective area from 9.0 mm2 to 12.0 mm2 (Cv 0.50 to 0.67) - size it against your cylinder bore.
Watch the reversal stroke. The button travels 5.9-7.2 mm and the spool needs 2.0-3.3 mm of that; pressing past the published limit damages the valve, and AirTAC says so explicitly. Control sets are available separately as spares, so a worn button does not mean a new valve.
Frequently asked questions
It is a 5/2-way external control, direct acting, mechanically latched valve. Working pressure is 0-1.0 MPa (0-145 psi), proof pressure 1.5 MPa (215 psi), temperature range -20 to +70 C. The port is PT1/8 on the 210 body, with an effective area of 9.0 mm2 (Cv 0.50). Body is aluminium alloy, air must be filtered by a 40 um element, lubrication is not required, and if lubricated air is used it should continue with ISO VG32 or equivalent.
The published reversal stroke is a button travel of 5.9-7.2 mm, of which the spool itself moves 2.0-3.3 mm. Pressing beyond those limits damages the valve - AirTAC states this explicitly. Also remember the release is a twist, not a push, and the plastic control set is rated for hand operation only: striking it with a tool is forbidden. Mounted latched circuits are also not safety devices - treat the PL as a control valve, not an emergency stop.