Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1002BD-S
SUS304 stainless variant (-S)The AirTAC Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1002BD-S 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 PSS1002BD-S
The PSS1002BD-S is a universal speed controller: it screws into a 1/4in PT port and accepts Dia 10mm soft nylon or polyurethane tubing, and it throttles air in one direction while letting it pass freely the other way. This code carries the B suffix, so it is the meter-in version - flow from the thread port to the tube runs free and the return path is controlled. AirTAC's own catalogue steers meter-in toward single-acting, spring-return cylinders; on a double-acting actuator under a changing load, meter-in control tends to stick-slip, so check your cylinder type before ordering.
The adjustment is a knob with an aluminium locking cap, and unlike the fixed PSL body the tube end swivels a full 360 degrees, so the part threads into the manifold without fighting the tube routing. Because this SKU ends in -S, the throttling column is SUS304 instead of brass, giving you a copper-free wetted path on the Dia 10 bore. The D suffix makes the standard grey body black.
Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1002BD-S Technical Specifications
| Model | Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1002BD-S |
|---|---|
| Type | Universal speed controller |
| Series | PSS |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | 360 degree adjustable tube direction |
| Body material | Stainless steel 304 (-S variant) |
| 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. Stainless (-S): SUS304 throttling column and body parts in place of brass, for copper-free environments. Ratings are unchanged from the standard version. 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 PSS1002BD-S
| 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. |
| -S | Stainless-steel body. |
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 PSS1002BD-S Is Used
Spring-return clamp on a tray-sealing machine
A single-acting clamp cylinder closing gently onto filled trays is the textbook meter-in job: supply air passes freely into the cylinder and the knob on the PSS1002BD-S meters the return, so the clamp lands softly instead of snapping onto the seal bar.
Copper-free transfer arm over an electroplating line
Above plating baths, copper ions in the wetted air path can contaminate the chemistry. The SUS304 throttling column in this -S variant removes brass from the circuit, and the Dia 10 bore carries enough air for a small lift-and-transfer arm timed between tanks.
Single-acting case packer pusher in a bottling hall
The 360 degree swivel tube end lets the controller sit on a crowded manifold block while the Dia 10 hose runs cleanly to the pusher cylinder, and the SUS304 wetted parts stand up to the damp, wash-down atmosphere around the filler.
Is the Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1002BD-S the Right Part?
Sizing: one step down on the same 1/4in thread is the PSS0802BD-S with a Dia 8 tube, which suits lighter single-acting actuators and keeps the controlled volume smaller. There is no Dia 12 option on a 1/4in thread in the PSS ladder - to step up, keep the Dia 10 tube and move the port to 3/8in (PSS1003BD-S) or go to Dia 12 on a 3/8in or 1/2in thread. Fit the controller directly at the cylinder port so only the short stub of tube between controller and cylinder sits in the throttled zone; a small throttled volume responds faster to the knob.
Choose the PSS over the PSL when the tubing has to approach the port at an awkward angle - the swivel absorbs it. Knob adjustment with a locking cap is faster to re-set by hand than the push-lock PTL caps, at the cost of a slightly taller profile. Meter-in (B) is right for single-acting cylinders; if yours is double-acting driven by a solenoid valve, take the A (meter-out) version instead for a back-pressure cushioned stroke.
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 PSS1002BD-S FAQ
It is a universal (360 degree swivel) speed controller with a Dia 10mm tube and 1/4in PT thread, meter-in (B) control, black body. Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, usable vacuum down to -750 mmHg (10 Torr), operating temperature -20 to +70 C. Tubing is soft nylon or polyurethane. The -S build uses a SUS304 throttling column in place of brass; all pressure, vacuum and temperature ratings are identical to the standard version.
Meter-in control suits single-acting, spring-return cylinders, where the spring returns the piston and only the supply side needs governing. For a double-acting cylinder driven by a solenoid valve, AirTAC lists meter-out as the first priority because throttling the exhaust builds a back-pressure cushion and keeps the stroke smooth. Also note that a speed controller is not a shut-off valve: it leaks slightly when fully closed by design, so isolate circuits with a proper valve such as the PHV finger valve.
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