Airtac PSL Throttle Speed Control Fitting PSL8-02B
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL8-02B 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 PSL8-02B
The PSL8-02B is an AirTAC speed controller that meters the air leaving a 1/4in PT port into Dia 8mm one-touch tubing. The B suffix marks it as meter-in: flow from the thread port to the tube is throttled, while air travelling the opposite way passes through the brass throttling column unrestricted. Meter-in is the right choice for a single-acting cylinder, where the return is handled by a spring and only the power stroke needs controlling.
Adjustment is by a knurled knob with an aluminium locking cap, so once the stroke speed is set the cap can be tightened to stop vibration walking the setting off. The body combines a brass throttling column and body with PBT plastic holder and an NBR seal, and the tube direction is fixed - if you need a swivelling outlet on the same thread, that is the PSS family instead.
Airtac PSL Throttle Speed Control Fitting PSL8-02B Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL8-02B |
|---|---|
| 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 PSL8-02B
| 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 PSL8-02B Is Used
Single-acting swing clamp on a welding fixture
A spring-return swing clamp needs a controlled power stroke only; metering the incoming air with the PSL8-02B lets the clamp close onto the weldment without shock, and the lock cap holds the setting through shift-long fixture vibration.
Gentle press head on a small packaging machine
A single-acting cylinder pushing a sealing head into cartons is easy to overshoot. Throttling the supply side on the B code gives the operator a slow, repeatable press speed that can be dialled in once per product change.
Lift bellows on a laboratory sample stand
Single-acting air bellows raising a sample stage must rise smoothly to protect delicate instruments. The Dia 8mm line and 1/4in PT port suit compact bench manifolds, and the -750 mmHg vacuum rating covers vented positions.
Is the Airtac PSL Throttle Speed Control Fitting PSL8-02B the Right Part?
Step down to PSL6-02B for Dia 6mm tubing on lighter single-acting actuators, or up to PSL10-02B for Dia 10mm lines feeding larger clamps - a bigger bore simply carries more free air, so the same knob travel spans a wider speed range. The Dia 8mm tube size is also made on the 1/8in (PSL8-01B) and 3/8in (PSL8-03B) threads if your manifold port differs. Mount the controller directly at the cylinder port rather than at the valve: the throttled volume then stays small and the response to each adjustment is crisp.
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 PSL8-02B FAQ
It is a meter-in (B) AirTAC PSL speed controller for Dia 8mm soft nylon or polyurethane tubing with a 1/4in PT thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, and temperature range -20 to +70 C. Standard colour is grey; add a D suffix to the code for black. The body uses a brass throttling column and body, PBT plastic holder and an NBR O-ring.
AirTAC's own guidance puts meter-out first: on a double-acting cylinder, throttling the exhaust builds a back-pressure cushion that keeps the stroke smooth. Meter-in, like this PSL8-02B, is aimed at single-acting cylinders where a spring returns the rod and only the power stroke needs speed control. Using meter-in on a double-acting cylinder under varying load tends to cause stick-slip, so pick the A version (PSL8-02A) for that case.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard parts are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Speed Controllers
Request a Quote for Airtac PSL Throttle Speed Control Fitting PSL8-02B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.