Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S
SUS304 stainless variant (-S)The AirTAC Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S 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 PTL602BD-S
PTL602BD-S is a push-lock speed controller in the stainless trim option: Dia 6 mm tube on a 1/4 in PT thread, finished in black (the D suffix), with SUS304 wherever the standard part uses brass. The B code makes it a meter-in controller: air flowing from the valve port through the controller into the tube runs free, while the return path from tube back to the port is throttled. That is the correct choice for a single-acting, spring-return cylinder, where metering the supply side gives a smooth controlled stroke without fighting the return spring.
Adjustment is by push-lock cap rather than a knob: press the cap to release or grip the tube, and the setting stays put against vibration and knocks. AirTAC publishes exactly one torque figure for this family - the 1/4 in push-lock cap is 0.16 N.m if you ever re-seat it. The throttling column is SUS304 in place of brass and the spring gasket is stainless, so the part suits wash-down areas and copper-free processes such as plating and electronics assembly. Seal the 1/4 in male PT taper with thread tape as usual.
Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S Technical Specifications
| Model | Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S |
|---|---|
| Type | Push-lock speed controller, threaded elbow |
| Series | PTL |
| Adjustment | Push-lock adjusting cap (POM) |
| Orientation | Fixed 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 PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S
| 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. |
| -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 PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S Is Used
Pharma vial-filling probe
A spring-return test probe on a vial filling line lowers onto each vial by meter-in control, so the spring does the return at full speed while the downstroke stays gentle on glassware.
Copper-free PCB stopper
A stopper pin on an electronics indexing station drives with a small Dia 6 cylinder; the SUS304 throttling column keeps brass out of the clean process area and the push-lock cap holds the setting.
Rinsed-down packaging gate
A carton guide gate on a coffee packaging machine is hosed down at shift end; the stainless trim and black POM cap shrug off moisture, and the 1/4 in port suits the machine's existing valve manifold.
Is the Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S the Right Part?
Meter-in (B) suits single-acting cylinders and circuits where controlling the supply side is wanted; for a double-acting cylinder driven by a solenoid valve, AirTAC's own guidance is that meter-out is the first priority, so choose the A version instead. On the 1/4 in thread the PTL tube ladder starts at Dia 6 - this is the smallest tube AirTAC offers on 1/4 in - and steps up through PTL802BD-S (Dia 8) to PTL1002BD-S (Dia 10); step the thread down to 1/8 in (PTL601BD-S) if your port is smaller. A larger bore passes more air for a given setting, so it suits bigger cylinder volumes. Whichever size you pick, fit the controller directly at the cylinder port so the throttled volume stays small and the 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 PTL Exhaust Throttle Type Speed Control Valve PTL602BD-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. This SKU is the Dia 6 mm tube size on a 1/4 in PT thread, meter-in (B), black, with a SUS304 throttling column and stainless spring gasket. It is rated for soft nylon or polyurethane tubing.
AirTAC publishes one torque for this kit: the PTL push-lock cap. For the 1/4 in thread size, seat it to 0.16 N.m. Overtightening distorts the POM cap and can spoil the grip on the tube - the cap holds the setting, it is not a structural joint. Note too that a speed controller is not a shut-off valve: it is designed to leak slightly when fully closed, so isolate the circuit with a proper valve elsewhere.
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