Airtac PTL Exhaust Throttle Type Speed Control Valve PTL1003BD
The AirTAC Airtac PTL Exhaust Throttle Type Speed Control Valve PTL1003BD is a genuine push-lock speed controller, threaded elbow with push-lock adjusting cap (pom) and fixed tube direction, used to set the speed of a pneumatic cylinder by throttling its air.
- TypePush-lock speed controller, threaded elbow
- SeriesPTL
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- AdjustmentPush-lock adjusting cap (POM)
- 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 PTL Exhaust Throttle Type Speed Control Valve PTL1003BD
The PTL1003BD is an AirTAC PTL-series push-lock speed controller sized for Dia 10 polyurethane or soft nylon tube on a 3/8in PT threaded port. It slows an actuator by throttling the air in one direction while letting it pass freely the other way. The B suffix marks this unit meter-in: air flowing from the thread port into the tube runs wide open, and the controlled restriction acts on the return path. Meter-in is the correct pick for a single-acting, spring-return cylinder, where there is no exhaust-side back pressure to cushion and the supply side is what sets the stroke speed. AirTAC notes that meter-out is the first choice for double-acting cylinders, so reserve this code for spring-return duty.
The push-lock cap replaces the familiar knob: press it in to lock the setting, pull it out to adjust. That cap should be seated to 0.24 N.m on the 3/8in size - the only torque value AirTAC publishes for this family - and it resists being backed off by machine vibration, which is exactly why it suits fixtures that run all shift. The body shares the PSL footprint with a fixed tube direction, and the D suffix identifies the black housing. Note that the PTL ladder starts at 1/8in, so no M5 version exists in this series.
Airtac PTL Exhaust Throttle Type Speed Control Valve PTL1003BD Technical Specifications
| Model | Airtac PTL Exhaust Throttle Type Speed Control Valve PTL1003BD |
|---|---|
| Type | Push-lock speed controller, threaded elbow |
| Series | PTL |
| Adjustment | Push-lock adjusting cap (POM) |
| 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 PTL Exhaust Throttle Type Speed Control Valve PTL1003BD
| PTL | Push-lock 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 PTL Exhaust Throttle Type Speed Control Valve PTL1003BD Is Used
Spring-return swing clamp on a CNC fixture
A single-acting swing clamp on an automotive machining fixture closes onto a cast housing under meter-in control, so the clamp pads settle onto the surface instead of spiking into it, while the spring retracts through the free-flow path.
Single-acting gate pusher on a sawmill sorter
A Dia 10 supply line feeds a spring-return pusher that kicks timber off a transverse sorter. Meter-in throttling paces the push so boards track straight into the laneway, and the black housing shrugs off sawdust and grime.
Lid-press cylinder on a drum-filling line
The spring-return press that seats lids on 200L drums is fed through a 3/8in port; meter-in control slows the downstroke so the lid glides home without bouncing, and the push-lock cap survives the vibration of the filler head above.
Is the Airtac PTL Exhaust Throttle Type Speed Control Valve PTL1003BD the Right Part?
Check your actuator first. A single-acting cylinder with a spring return pairs naturally with meter-in control like this PTL1003BD; if you are driving a double-acting cylinder from a solenoid valve, step to the A-suffix meter-in reverse (meter-out) version instead, because throttling the exhaust keeps the stroke smooth under varying load. Next choose the cap style: push-lock holds its setting under vibration, while the knob on a PSL is quicker to twist during setup trials. If your tube must swivel at the port, the PTS universal body does that job; this fixed-body PTL does not.
Bore-wise, this SKU sits mid-ladder: Dia 8 (PTL803B...) is one step down and Dia 12 (PTL1203B...) is one step up on the same 3/8in thread. Stepping down trims the controlled air volume for smaller, snappier actuators; stepping up feeds bigger bores with less restriction in the free direction. Whichever you choose, mount the controller directly at the cylinder port so only the short cylinder chamber, not the whole air line, is throttled - this is what makes speed response 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 PTL Exhaust Throttle Type Speed Control Valve PTL1003BD FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), usable under vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and an operating temperature range of -20 to +70 C. This SKU is the push-lock speed controller for Dia 10 tube on a 3/8in PT thread, meter-in (B) control direction, black housing. It suits soft nylon or polyurethane tubing.
Seat the push-lock cap to 0.24 N.m on this 3/8in size - that is the only torque value AirTAC publishes for the family; the lock works by the cap's detent, not by brute force. And no: like every speed controller in this catalogue, the PTL1003BD is not a shut-off valve - a fully closed setting still weeps slightly by design. If you need positive isolation or venting of the outlet, use the PHV finger valve instead.
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