AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006)
The AirTAC AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006) is a genuine 5/2-way double air pilot (memory) air pilot valve with PT1/8 ports. It is a sliding-spool valve switched by a compressed-air signal instead of a coil, and it directs air to double-acting cylinders and actuators. The 4A100 body is published at 10.2 mm² effective area (Cv 0.6).
- Valve type5/2-way
- ActuationAir pilot
- Port sizePT1/8
- Effective area10.2 mm²
- Flow (Cv)0.6
- Series4A100
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006)
The AirTAC 4A12006 is a double air pilot 5/2 valve in the smallest 4A100 body, fitted with 1/8in PT tapered ports. It directs compressed air to a double-acting cylinder or actuator, feeding one side while exhausting the other, and it is switched entirely by an air signal - there is no coil anywhere in the valve. A short pulse on either pilot port throws the spool, and the spool simply stays where it was last pulsed, held by land friction and balanced pressure. No signal needs to be kept on, and the valve keeps its last position if pilot air is lost.
AirTAC publishes 10.2 mm2 effective area (Cv 0.6) and a no-load maximum of 5 cycles per second for this 5/2 body, working over 0.15-0.8 MPa. It weighs 140 g, suits roughly Dia 16-32 mm double-acting cylinders, and needs air filtered by a 40 um element. The tapered PT thread seals on its flanks, so wrap the joint with PTFE tape rather than expecting a face seal.
AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006) Technical Specifications
| Model | AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006) |
|---|---|
| Series | 4A100 air pilot valve (sliding-spool type) |
| Valve type | 5/2-way |
| Function | Double air pilot (memory) |
| Actuation | Double air pilot, detent-free memory (exterior air control) |
| Port size | PT1/8 |
| Exhaust port | PT1/8 |
| Thread standard | PT (Rc tapered) |
| Effective area (Cv) | 10.2 mm² (Cv 0.6) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 0.8 MPa (21 – 114 psi) |
| Proof pressure | 1.2 MPa (175 psi) |
| Max frequency | 5 cycle/sec (no load) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Lubrication | Not required |
| Weight | 140 g |
Specifications follow the official AirTAC 4A series datasheet. AirTAC publishes the effective area / Cv published for the 1/8" port; other port and centre options of this body share the same casting but are not separately rated. Max frequency is the no-load figure. Confirm the thread standard (PT / G / NPT) against the product label before piping.
Flow & Piloting
| Effective area | 10.2 mm² |
|---|---|
| Flow coefficient | Cv 0.6 |
| Control signal | Compressed air (exterior pilot) |
| Pilot ports | Two pilot ports, one per side |
| Electrical parts | None — no coil, no wiring, no IP rating needed |
| Manifold base | 100M (up to 16 stations) |
Because there is nothing electrical in the valve, the 4A suits wash-down, explosive-atmosphere and high-vibration areas where a solenoid would need certification. Size the valve so effective area / Cv is not the bottleneck for your bore and speed; the 5/3 centre versions have a smaller effective area than the 5/2 of the same body.
Model Code: AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006)
| 4A | Air pilot valve, sliding-spool, 4-series. |
|---|---|
| 1 | Body size (4A100) — sets port & flow. |
| 20 | Function: 10 = single pilot 5/2, 20 = double pilot 5/2, 30C/E/P = 5/3 closed / exhaust / pressure centre. |
| 06 | Port size: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
| (blank) | Thread standard: blank = PT, G = BSPP, T = NPT. This model is PT (Rc tapered). |
Related: 4A110 (single pilot), 4A120 (double pilot, memory), 4A130C/E/P (5/3 centre).
Where the AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006) Is Used
Woodworking clamp fixtures
Router and saw jigs in dusty workshops: a hand or limit signal valve pulses the 4A12006 to reverse each Dia 16-32 mm double-acting clamp, and sawdust cannot harm a valve with no electrical parts.
Grain elevator slide gates
Gate cylinders on augers and elevator legs: one pulse from a remote lever valve opens the gate, another closes it, and the memory spool keeps the gate put even if pilot air drops - valuable in dust zones where coils are a certification headache.
Quarry chute deflector control
On vibrating screens and crusher feed chutes, a panel-mounted signal valve pulses this Cv 0.6 valve to swing the deflector plate; the valve tolerates constant vibration because nothing in it is electrical.
Is the AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006) the Right Valve?
Step up to the 4A200 (Cv 1.0) when this Cv 0.6 class feels small for your cylinders; there is no smaller 4A body, so below this flow class you would move to a different product family rather than a smaller 4A. Choose the single-pilot 4A110 if your circuit can hold a signal and you want spring return; stay with this 4A120 when a short pulse and position memory suit the logic; pick a 4A130C/E/P only if you need a defined centre condition. The air pilot earns its keep where electrics struggle: with no coil there is nothing to burn out in dusty grain plants, wash-down food lines or vibrating quarry gear, and a single signal line can run the valve far from any control cabinet. Run it singly or bank it on a 100M base (up to 16 stations, 1/4in common inlet). For a replacement, match all four points: body size 4A100, function 20, port 1/8in, thread PT.
Quick checklist
- ✓ Required flow (Cv) for cylinder & speed
- ✓ Function: single / double / 5-3 centre
- ✓ Pilot air available at 0.15 MPa or above
- ✓ Port thread (M5 / 1/8 / 1/4 / 3/8 / 1/2)
- ✓ Single valve or 100M manifold base?
Installation & Piloting Notes
- check Use clean air filtered to 40µm or finer.
- check Keep the main line within 0.15 – 0.8 MPa.
- check Drive the pilot port from a 3/2 or 5/2 signal valve.
- check A pulse is enough — the spool stays where it was last driven.
- check Fit silencers or fittings to the exhaust ports.
- check Once run on lubricated air, keep lubricating it.
AirTAC 4A120-06 Pneumatic Control Valve, 4A100 Series (4A12006) FAQ
It switches double-acting cylinders and actuators in roughly the Dia 16-32 mm range. AirTAC publishes an effective area of 10.2 mm2 (Cv 0.6) for the 5/2 body, a no-load maximum frequency of 5 cycles per second, and an operating pressure range of 0.15-0.8 MPa (proof pressure 1.2 MPa). Air must be filtered by a 40 um element, and the valve weighs 140 g with 1/8in PT ports.
A short pulse of air on either pilot port shifts the spool, and the spool stays there afterwards purely through land friction and balanced pressure - there is no spring, no detent and nothing magnetic. If pilot air is lost the valve remains in its last position. For suspended or hazardous loads, add a pilot-operated check valve at the cylinder ports or a mechanical brake, since the valve alone is not a certified load-holding device.
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Related AirTAC 4A Valves & Bases
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