Airtac PSL Throttle Speed Control Fitting PSL6-01B
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL6-01B 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 PSL6-01B
PSL6-01B is a PSL series speed controller from AirTAC: a 1/8 in PT male thread on one side and a Dia 6 mm one-touch push-in port on the other. The B suffix fixes the control direction as meter-in. Air passing from the thread port into the tube runs free, while flow travelling the other way is throttled, so when the body is screwed into the cylinder port and the tube side is plumbed back to the valve, the air filling the actuator is the restricted flow. That supply-side throttling is why AirTAC aims the B code at single-acting cylinders, where a soft, metered fill gives a gentle stroke without exhaust back-pressure fighting the return spring.
The setting is made with a knurled knob and held by an aluminium-alloy locking cap, so machine vibration cannot drift the needle off its position. Inside, the throttling column and body are brass, the holder is PBT plastic and the seal is NBR. The part is rated 0-1.0 MPa, holds vacuum down to -750 mmHg, and works from -20 to +70 C with soft nylon or polyurethane tubing. Grey is the standard colour; add a D suffix to the order code for black.
Airtac PSL Throttle Speed Control Fitting PSL6-01B Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL6-01B |
|---|---|
| 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 PSL6-01B
| 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 PSL6-01B Is Used
Spring-return clamp on a drilling jig
A single-acting clamp cylinder closing onto a machined face is a textbook meter-in job: the B code meters the fill so the clamp pad lands on the workpiece without marking it, and the spring return exhausts freely on release.
Bench-top pneumatic press ram
On a small single-acting bench press used for staking or embossing, PSL6-01B lets the operator dial the down-stroke speed with the knob and lock it in place, keeping cycle time repeatable part after part.
Carton kick-off pusher on a packing lane
A single-acting ejector nudging cartons off a conveyor lane can be timed to the belt by throttling its fill; the Dia 6 bore covers the small-bore cylinders typical of light packaging pusher stations.
Is the Airtac PSL Throttle Speed Control Fitting PSL6-01B the Right Part?
Match the control method to the actuator before the size. Meter-in (this B code) throttles the fill and suits single-acting, spring-return cylinders; on a double-acting cylinder AirTAC lists meter-out as the first priority, so choose PSL6-01A for that circuit. On the Dia 6 / 1/8 in rung of the PSL ladder the neighbours are Dia 4 (PSL4-01B) below and Dia 8 (PSL8-01B) above: stepping down trims the controlled volume for compact actuators, stepping up gives a larger bore for bigger cylinders. If the fitting must rotate to line up with the tube run, the PSS universal body swivels 360 degrees where the PSL tube direction is fixed. Screw the controller directly into the cylinder port so only the short line to the valve is throttled.
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 PSL6-01B FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, negative pressure to -750 mmHg (10 Torr), ambient and media temperature -20 to +70 C. This part takes Dia 6 mm soft nylon or polyurethane tubing on a 1/8 in PT male thread and is a meter-in (B) speed controller with knob adjustment.
You can, but AirTAC's own guidance rates meter-out as the first priority. Meter-in throttling on a double-acting cylinder tends to stick-slip as the load changes, because there is no back-pressure cushion. Keep PSL6-01B for single-acting, spring-return actuators and use the A version, PSL6-01A, for double-acting circuits. Also note that a speed controller is not a shut-off valve: it weeps slightly when fully closed, so isolate the circuit with a proper valve.
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