Airtac PTL Exhaust Throttle Type Speed Control Valve PTL6M5A-MS
SUS304 stainless variant (-S)The AirTAC Airtac PTL Exhaust Throttle Type Speed Control Valve PTL6M5A-MS 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 PTL6M5A-MS
The PTL6M5A-MS is the compact, stainless version of AirTAC's push-lock speed controller. It throttles air flowing from the M5 thread port out to the Dia 6 tube and lets the return flow pass freely, which is the A suffix: meter-out. Meter-out is AirTAC's stated first choice because restricting the exhaust of a double-acting cylinder holds a back-pressure cushion, so the load is carried by air throughout the stroke instead of by sliding friction - the rod moves smoothly instead of lurching. The A marking on the cap tells the fitter which way round it sits at a glance.
Instead of a knob, this mini body carries a push-lock cap: press to release, slide to set, press back to lock. Once locked it resists vibration and accidental nudges far better than a plain knurled knob, and the published seating torque for the M5 cap is just 0.05 N.m - hand-firm, never wrench-tight. The -MS suffix makes the throttling column SUS304 in place of the standard brass, so the wetted path is copper-free and corrosion-resistant for wash-down frames, plating rigs and electronics processes. Ratings are unchanged from the standard line: 0-1.0 MPa, vacuum to -750 mmHg, -20 to +70 C, on soft nylon or polyurethane tubing.
Airtac PTL Exhaust Throttle Type Speed Control Valve PTL6M5A-MS Technical Specifications
| Model | Airtac PTL Exhaust Throttle Type Speed Control Valve PTL6M5A-MS |
|---|---|
| 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) |
| Size class | Mini series (-M) |
| 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 PTL6M5A-MS
| 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. |
| -M | Mini series. |
| -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 PTL6M5A-MS Is Used
Analytical sampler lift
Raises and lowers a sampling probe into reagent trays. The SUS304 throttling column keeps copper out of the wet zone, and the mini M5 body fits the cramped manifold plate on the instrument chassis.
Bakery tray washer pusher
An indexing pusher that feeds trays into a wash tunnel, where hoses get soaked every shift. The stainless build shrugs off the wash-down, and meter-out control keeps the trays from being shoved off the rail.
PCB destacking clamp
A pneumatic clamp that closes gently onto populated circuit boards. Dia 6 tubing on a small clamping cylinder, with the push-lock cap locked so operators cannot disturb the gentle-close setting mid-shift.
Is the Airtac PTL Exhaust Throttle Type Speed Control Valve PTL6M5A-MS the Right Part?
Size check both ways. Step down within the mini ladder to the PTL4M5A-MS (Dia 4 tube, same M5 thread) when the actuator is a small gripper or micro cylinder and you want finer low-flow trimming. Step up to the PTL601A-MS, which keeps the same Dia 6 tube but moves the thread from M5 to 1/8 in PT and the body from mini to the standard-size push-lock housing - useful when the port on the machine is a tapped PT port rather than a small M5 boss. If your layout needs the tube to swivel instead of pointing one way, the PTS family is the 360-degree counterpart.
Fit the controller directly in the cylinder port rather than back at the valve manifold. Throttling works on the air inside the line between the restriction and the actuator, so the shorter that trapped volume, the crisper the response. Note that a speed controller is not a shut-off: fully closed it still weeps slightly, so circuit isolation needs a real valve.
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 PTL6M5A-MS FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure to -750 mmHg (10 Torr), proof pressure 1.5 MPa, temperature -20 to +70 C. This SKU is the Dia 6 tube by M5 thread, A (meter-out) control, mini push-lock body, with SUS304 for the throttling column in place of brass. It runs on soft nylon or polyurethane tubing; the -MS stainless variant keeps exactly the same ratings and dimensions as the standard part.
Both set the same meter-out restriction; the difference is retention. A knob turns freely, so vibration or a passing sleeve can move it. On this push-lock cap you press in, slide to the new setting, and release - the cap seats with a published torque of only 0.05 N.m at M5. That makes it the better pick on machines that are washed, shaken or worked around, where a setting that drifts means a stroke speed that drifts too.
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