Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602AD
The AirTAC Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602AD 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 PTL602AD
The PTL602AD is a push-lock speed controller that meters air in one direction and lets it run free in the other, so you set the stroke speed of a cylinder without touching the valve that drives it. This code carries the A suffix, which makes it a meter-out type: flow from the 1/4in PT thread port out to the Dia 6 tube is throttled, while the return path passes unrestricted. AirTAC lists meter-out as the first choice, and the reason is practical - on a double-acting cylinder the throttled exhaust builds a back-pressure cushion that keeps the piston moving smoothly instead of lurching under changing load.
The D suffix on this part means it is supplied in black rather than the standard grey. Adjustment is by a push-lock cap, not a knob: you lift the cap to set the flow and press it back down to lock the setting, so vibration and casual contact will not walk your adjustment away. The published tightening torque for the 1/4in push-lock cap is 0.16 N.m - more than that risks damaging the cap or the seat. Note that like every speed controller in this range it is not a shut-off; a part fully closed will still pass a trace of air, so use a PHV finger valve when you need true isolation.
Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602AD Technical Specifications
| Model | Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602AD |
|---|---|
| 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 PTL602AD
| 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 PTL602AD Is Used
Electronics gripper arm
A small pneumatic gripper placing PCBs into a test nest must not squeeze the board shut. The Dia 6 bore matches compact actuator lines, and meter-out throttling holds a gentle closing speed even as the jaw meets the part.
Glue head pacing
On a carton-closing line, a low-mass glue applicator head needs a repeatable down-stroke so the bead lands in the same spot each cycle. The push-lock cap keeps the set flow locked through washdown-vibration and operator bumping, and the black body hides adhesive spatter better than grey.
Packaging lid clamp
A clamp that lowers a lid onto filled trays on a conveyor has to close gently so it does not dent the product. With the PTL602AD mounted at the clamp port and throttling the exhaust, the cushion of back pressure slows the last part of the stroke smoothly.
Is the Airtac PTL Exhaust Throttle Type Speed Control Valve PTL602AD the Right Part?
Start by matching your actuator: meter-out (this A model) for a solenoid valve driving a double-acting cylinder, meter-in (the B version) mainly for single-acting cylinders, where throttling the supply is the only path that matters. Then pick the body style: this PTL has a fixed tube direction like a PSL, so if your tubing needs to swivel to relieve side load on the push-in seal, the PTS602A universal type is the like-for-like alternative with a 360-degree rotating outlet.
Sizing both ways: at the 1/4in thread there is no tube smaller than Dia 6 in the PTL ladder, so to step down in bore you drop a thread size to the PTL601A (Dia 6 on 1/8in PT) - the same tube, a more compact port. Stepping up on the same 1/4in thread gives the PTL802A with a Dia 8 bore, which passes more free-flow air for larger actuators but needs a bigger foot of space behind the panel. Whichever you choose, fit the controller directly at the cylinder port: the throttled air volume is then tiny and the response to each adjustment is immediate.
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 PTL602AD FAQ
It is a Dia 6 push-lock speed controller with a 1/4in PT thread, meter-out (A) control, in black (D). Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it withstands vacuum to -750 mmHg (10 Torr), proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Use soft nylon or polyurethane tubing only. Flow capacity is published as a characteristic curve, not a fixed figure, so rate the circuit by tube bore and actuator demand.
Tighten the 1/4in cap to 0.16 N.m once the setting is made - that is the published figure for this size, and overtightening it is the most common way these caps get damaged. Once seated, the lock holds the needle against vibration and knocks far better than a plain knob, which is why push-lock types are preferred on machines with moving heads or frequent washdown.
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