Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD
The AirTAC Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD is a genuine universal speed controller with knob with aluminium-alloy locking cap and 360 degree adjustable tube direction, used to set the speed of a pneumatic cylinder by throttling its air.
- TypeUniversal speed controller
- SeriesPSS
- 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD
The PSS1003BD is a universal speed controller: it meters air in one direction and lets it pass freely in the other, so an actuator stroke speed can be set exactly where the machine needs it. On this code the B suffix means meter-in - flow from the 3/8in PT thread port out to the Dia 10 tube runs free, and the return path from tube back to the port is throttled. AirTAC's own guidance puts meter-out first for double-acting cylinders, because exhaust throttling leaves a back-pressure cushion that keeps the stroke smooth; meter-in is the match for single-acting cylinders, where a spring or the load itself returns the piston.
The tube side of this body swivels a full 360 degrees after installation, so soft nylon or polyurethane tubing is never twisted or side-loaded when the port orientation is awkward. Adjustment is a knob capped by an aluminium locking collar that holds the setting against machine vibration. Internally the throttling column and body are brass, the holder is PBT plastic, the seal is NBR and the interface is POM. The trailing D marks the black finish; the grey version of this identical part is coded PSS1003B.
Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD Technical Specifications
| Model | Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD |
|---|---|
| Type | Universal speed controller |
| Series | PSS |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | 360 degree adjustable 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD
| PSS | Universal speed controller. |
|---|---|
| 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD Is Used
Spring-return clamps on a cartoning machine
Single-acting clamps that press lids onto filled cartons close on metered air and snap back on their springs; the B throttling keeps closure gentle on printed board and holds the setting with the locking cap.
Kicker gate on a bottling line
A single-acting pusher that diverts bottles between lanes runs off a 3/8in manifold port; the Dia 10 bore feeds the short stroke without starving it, and the swivel body points the tubing clear of the guide rails.
Load-returned lift column on a semi-automatic press
The column descends at the speed the meter-in needle allows instead of dropping under gravity, protecting the die and the operator while the return spring does the lifting.
Is the Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD the Right Part?
Choose meter-in (B) when the actuator is single-acting: a spring-return clamp, a load-returned column, or an air-extended kicker. If you drive a double-acting cylinder from a solenoid valve, step to the meter-out PSS1003A instead, because meter-in on a double-acting piston tends to stick-slip as the load changes through the stroke. Body style matters too: this PSS swivels 360 degrees on the tube side, the PSL equivalent is fixed to the port direction, and the inline PSA range (Dia 4 to Dia 12) has no threaded port at all.
Within the PSS ladder the next tube size down is Dia 8, which exists only on the 1/8in and 1/4in threads - Dia 8 is not offered on 3/8in - while the next size up is Dia 12, available on this same 3/8in thread and on 1/2in. A bigger bore restricts the free direction less and suits larger actuators, but gives the needle less authority at the slow end. Fit the controller directly at the cylinder port so the throttled air volume stays small and the speed response stays 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003BD FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a service temperature of -20 to +70 C. This SKU is a Dia 10 tube by 3/8in PT thread universal speed controller with meter-in (B) control in the black (D) finish, for soft nylon or polyurethane tubing.
The PSS tube joint rotates a full 360 degrees after the thread is tightened, so tubing can be routed without twisting it or side-loading the seal - useful when the controller sits behind a manifold or in a tight panel. The PSL body is fixed. Adjustment style, A/B control method and all ratings are identical, and both use a brass throttling column with a PBT holder and NBR seal.
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