Airtac M5HS Selector Mechanical Valve M5HS21006G
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5HS Selector Mechanical Valve M5HS21006G is a genuine 5/2-way selector switch type control valve. A turn-and-stay selector. Manual restoration, so it holds the selected state. 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 | M5HS21006G |
|---|---|
| Valve type | 5/2 way, external control, direct acting |
| Actuation | Selector switch type |
| Reset | Manual restoration - it holds the selected position |
| 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 | 5.1-6.4 mm at the selector |
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 M5HS21006G
The M5HS21006G is a 5/2-way, external control, direct acting pneumatic valve that is operated entirely by hand - you turn its selector knob, and the valve holds that position until you turn it back. There is no coil, no solenoid and no pilot port anywhere on this valve, so it is nothing like a 4V solenoid valve or a 4A air pilot valve. The green selector switch belongs to the 210 body series with a 1/8in PT thread.
Inside is a sliding-column spool driven straight off the selector, so the changeover force is independent of working pressure - there is no back-pressure effect, and the valve switches just as easily at low pressure as at full line pressure. The effective orifice is 9.0 mm2 (Cv 0.50). The exhaust outlet sits on top of the body, so a silencer screws straight in without re-plumbing. The control set is engineering plastic and is strictly for manual operation - never strike the selector with a tool.
Typical applications
Manual/auto mode selector on a packaging machine
Mounted at the operator panel of a carton sealing line, the green selector lets a technician switch the clamp cylinder circuit between auto-trip and manual-jog modes. The valve stays in the chosen position, so the machine cannot drift back to the other mode mid-shift.
Isolating a workholding fixture during tool change
On a CNC milling fixture, turning the selector holds the swing clamp cylinders retracted for the whole tool change. Because the state is held mechanically with no coil, a power cut cannot move the clamps, and the position survives an operator walking away.
Circuit routing changeover on a pneumatic test rig
A bench test station uses the selector to divert 1/8in supply between two cylinder circuits when switching test profiles. The no-back-pressure spool design means the changeover feel is identical whether the rig is idling or running at full 1.0 MPa.
How to choose
The HS selector sits alongside two other stay-put actuators in the M5 range: the Y lever and the PL latching button. Pick the HS when an operator should see and feel a deliberate two-position mode change; pick the Y lever when a hand lever feels more natural at the station; pick the PL when a single press-to-latch, twist-to-release action is wanted. All three hold their state - the difference is the hand motion.
The 210 body here flows 9.0 mm2 (Cv 0.50) through 1/8in PT; the same selector on a 110 body drops to 8.0 mm2, and stepping to 1/4in on the 210 raises the orifice to 12.0 mm2 (Cv 0.67). Match the port to your cylinder size. Do not exceed the published reversal stroke - spool travel of 2.0-3.3 mm with a selector stroke of 5.1-6.4 mm - or the valve will be damaged.
Frequently asked questions
It is a 5/2-way selector switch valve, external control and direct acting, with a PT1/8 port on the 210 body. Working pressure is 0-1.0 MPa (0-145 psi), proof pressure 1.5 MPa (215 psi), and operating temperature -20 to +70 C with air filtered to 40 um. Effective orifice is 9.0 mm2 (Cv 0.50). The body is aluminium alloy, lubrication is not required, and the exhaust port is on top of the body for direct silencer mounting.
The published reversal stroke is a spool stroke of 2.0-3.3 mm with a selector actuator stroke of 5.1-6.4 mm. These are hard mechanical limits: AirTAC states explicitly that exceeding the reversal stroke damages the valve. There is no spring return to absorb over-travel on this type - the selector holds where you set it - so the stop position must be respected in panel cutouts and guard design. Order a spare control set if the valve is operated by many different people.