Airtac PSL Throttle Speed Control Fitting PSL6-01A
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL6-01A is a genuine speed controller, threaded elbow with knob with aluminium-alloy locking cap and fixed tube direction, used to set the speed of a pneumatic cylinder by throttling its air.
- TypeSpeed controller, threaded elbow
- SeriesPSL
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- AdjustmentKnob with aluminium-alloy locking cap
- Temperature-20 to +70 °C
- 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 PSL Throttle Speed Control Fitting PSL6-01A
The PSL6-01A is an AirTAC PSL series speed controller that meters air between a 1/8in PT port and Dia 6 soft nylon or polyurethane tubing. The A suffix makes it a meter-out unit: flow from the thread port to the tube is throttled, while air running the other way passes through unrestricted. AirTAC lists meter-out as the first priority because throttling the exhaust of a double-acting cylinder builds a back-pressure cushion, so the stroke stays smooth instead of stick-slipping under a shifting load.
Adjustment is a knob under an aluminium alloy locking cap, so a set speed survives vibration and stray hands. Inside, a brass throttling column sits in a brass body carried by a PBT plastic holder, with an NBR O-ring sealing the 1/8in thread. The standard colour is grey, and the tube direction is fixed - unlike the swivelling PSS universal version.
Airtac PSL Throttle Speed Control Fitting PSL6-01A Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL6-01A |
|---|---|
| Type | Speed controller, threaded elbow |
| Series | PSL |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | Fixed tube direction |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. A speed controller is not a shut-off valve - a small leak past a fully closed needle is normal. Close it before applying air, and turn it open slowly. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac PSL Throttle Speed Control Fitting PSL6-01A
| PSL | Speed controller, threaded elbow. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| A / B | A = meter-out (controls flow from the thread port to the tube). B = meter-in. |
| D | Black. Blank = grey. |
Meter-Out or Meter-In?
- check Meter-out (A) is the default. It throttles the air LEAVING the cylinder, so the piston runs against a back-pressure cushion and moves smoothly.
- check Use meter-out on double-acting cylinders - it is the one AirTAC lists as first priority.
- check Meter-in (B) throttles air ENTERING the cylinder. It suits single-acting cylinders and air motors.
- check Meter-in on a double-acting cylinder tends to give a jerky, stick-slip stroke under varying load.
- check Fit the controller at the cylinder port, not at the valve, so the throttled volume is as small as possible.
Where the Airtac PSL Throttle Speed Control Fitting PSL6-01A Is Used
Pick-and-place gantry
A vacuum gantry lifting glass sheets between wash stations needs a controlled descent so the cups do not slam the load down; meter-out throttling on the down stroke gives a gentle, repeatable landing.
Clamp on an anodising line
A clamp cylinder closing onto freshly anodised aluminium extrusions is trimmed with the A handle so the jaws meet the finished surface without marking the coating.
Carton indexing pusher
On a case-packing line, a Dia 6 pusher cylinder times each carton into the lane; the 1/8in port controller sets the push speed to match the belt pitch station by station.
Is the Airtac PSL Throttle Speed Control Fitting PSL6-01A the Right Part?
Choose the control method first. Meter-out (this code, handle marked A) is the default for a solenoid valve driving a double-acting cylinder; meter-in (PSL6-01B) is the pick for a single-acting actuator, where there is no exhaust to cushion. Then pick the body: PSL screws into the port with a fixed tube direction, PSS swivels 360 degrees, and PSA is an inline tube-to-tube unit with no thread at all. On this 1/8in ladder, step down to PSL4-01 for a lighter line or up to PSL8-01 for a bigger bore; if the thread is the variable, Dia 6 is also made in PSL6-M5 and PSL6-02. Mount the controller directly at the cylinder port so only the short tubing stub holds throttled air.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
- ✓ Meter-out (A) unless you know you need meter-in
Airtac PSL Throttle Speed Control Fitting PSL6-01A FAQ
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), negative pressure goes down to -750 mmHg (10 Torr), and proof pressure is 1.5 MPa. The temperature range is -20 to +70 C. This model takes Dia 6 soft nylon or polyurethane tubing on a 1/8in PT thread and carries the A meter-out marking.
The handle is stamped with the control letter. On an A unit, flow from the 1/8in thread port to the tube is throttled and the reverse direction runs free, so connect the thread port to the cylinder port you want to slow. Remember the throttle is not a shut-off: a fully closed controller may still weep slightly by design, so isolate the circuit with a separate valve such as the PHV finger valve.
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