Specifications: PTL601A is an Airtac push-lock speed controller. Push-lock speed controller; Tube outside diameter: 6 mm; Connection: PT 1/8; Meter-out, adjustment cap marked A; Gray release button and body; PT pipe thread; M5 remains the metric M5×0.8 thread when selected..
Product Catalog
Download Airtac Product Catalog (2026 English PDF)
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Source coverage: the linked customer reference is the 2026 English PTL catalog, printed pages 257–261. The technical data below continues to follow the 2022 Chinese catalog for mini and standard PTL versions, printed pages 279–281. The current model uses its matching drawing and parts information from that Chinese data source.
Model Code Explained
Code
Meaning
PTL
Push-lock speed controller
6
Tube outside diameter: 6 mm
01
Connection: PT 1/8
A
Meter-out, adjustment cap marked A
(blank color code)
Gray release button and body
(blank thread code)
PT pipe thread; M5 remains the metric M5×0.8 thread when selected.
Technical Specifications
Parameter
Details
Operating pressure
0–1.0 MPa
Negative pressure
−750 mmHg (10 Torr), as printed
Proof pressure
1.5 MPa
Ambient and fluid temperature
−20 to 70 °C
Applicable tubing
Soft nylon or polyurethane; use the exact tube outside diameter specified for this model.
Tube outside diameter
6 mm
Application
Connect to the specified soft-nylon or polyurethane tube size and PT 1/8 threaded port.
Control direction
Meter-out: threaded end → tubing end controlled; tubing end → threaded end free.
Features and Operation
Compact, lightweight form intended to control pneumatic actuator speed and pressure-signal transmission.
The catalog describes responsive flow adjustment. Match the selected control direction and exact tubing and thread sizes.
Push-lock adjustment provides quick manual setting and locking.
The catalog specifies a nickel-plated brass body to resist corrosion and contamination.
The threaded connection portion is coated with sealant to seal the threaded joint.
External and Mounting Dimensions
Dimensions retain the letter labels and separate views in the source drawing. Linear dimensions are in millimeters; pipe threads retain their stated standard and nominal size. Do not combine unrelated callouts into an overall size.
Parameter
Details
ØD
6 mm
R
1/8
ØPA
12.5 mm
ØPB
13 mm
L
8.5 mm
C pull
36 mm
C push
34.5 mm
K
16.5 mm
EA
22.5 mm
EB
23.5 mm
H (across flats)
14 mm
Source: 2022 Chinese catalog, PTL, printed page 281; ordinary standard PTL dimensions.
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Catalog reference weight: 12.5 g. This is a published reference, not a measured shipping weight; actual product weight governs.
Selection, Installation and Use
The recommended adjustment-cap rotation torque is 0.08 N·m. This is the cap rotation limit, not the pipe-thread installation torque.
The push-lock catalog directs users to the general speed-controller instructions for selection, installation and operation.
Flow / Performance Characteristics
The corresponding PTL family chart plots controlled flow 0–200 L/min (ANR) against adjustment 0–9 turns, at the stated operating pressure 0.5 MPa.
The free-flow chart has printed inlet-pressure labels from 0 to 0.7 MPa; its vertical-axis printed labels extend through 350 L/min (ANR). Unlabelled grid space above the highest printed flow label is not assigned a numerical maximum here. Select the curve group with this tube and thread combination.
The curves are graphical selection references. Axis limits are not guaranteed rated-flow values; refer to the actual curve for the operating point.
Internal Components
Part numbers refer to the 2022 Chinese data source and its applicable internal-structure drawing.
Part / name
Material
1 — Adjusting cap
POM
2 — Plastic body
PBT
3 — Fixing ring
Aluminum alloy
4 — Throttling column
Brass / aluminum alloy
5 — O-ring
NBR
6 — O-ring
NBR
7 — Throttling body
Brass
8 — Throttling sleeve
Aluminum alloy
9 — Holder
PBT
10 — Special-shape O-ring
NBR
11 — Special-shape O-ring
NBR
12 — Locating seat
POM
13 — Locating ring
Aluminum alloy
14 — Plastic interface
POM
15 — Spring gasket
Stainless steel
Series Ordering Options
Gray (blank) or black (D) release button and body. A means meter-out and B means meter-in on threaded controllers; the two control directions share their corresponding dimensions.
Only the tube/thread combinations listed for the particular series are options. The current model configuration above is one selection, not all configurations at once.
Cylinder and Valve Selection Reference
A relevant example from the 2022 catalog, printed page 299, is shown below. It is a system-selection reference: theoretical speed is not a guaranteed speed of this component; the required area is not its rated effective area; listed valves and tubing are not included accessories.
Parameter
Details
Published accessory reference
PTL01; family/connection reference, not a supplied assembly
Cylinder bore
20 mm
Theoretical reference speed
500 mm/s
Required effective cross-sectional area
0.8 mm²
Single-solenoid valve options
5V110M5 /4V110M5 /4V11006 /4M110M5 /4M11006
Double-solenoid valve options
5V120M5 /4V120M5 /4V12006 /4M120M5 /4M12006
Single air-pilot valve options
4A110M5 /4A11006
Double air-pilot valve options
4A120M5 /4A12006
Tubing between directional valve and cylinder
OD×ID 6×4 mm
Optional Matching PU Tubing
T = 1 push-in socket for 6 mm OD tube. T identifies the receiving tube-size group, not a supply/outlet assignment or coil quantity. The listed complete tube codes are alternatives. R is the separate male PT1/8 connection, not a tube socket. A meter-out controls R → T and allows free flow T → R. This is the ordinary standard form. Tube dimensions below are OD × ID in mm. These tubing options are optional and ordered separately.
Code-prefix uses (match the longest listed family prefix): UE polyurethane tube; US polyurethane tube.
Use
Size / complete codes
T
6 × 4: UE95A060040100MBU,US98A060040100MBU
The listed PU tubes are optional, separately ordered choices for the assigned push-in sockets. Match the exact metric outside diameter at each socket; inch sizes are not substitutes. T identifies the tube-size group, not a new inlet/outlet assignment or coil quantity. Tube selection does not select a host cylinder, valve, threaded adapter, mounting accessory or internal service kit.
The PTL T socket receives 6 mm OD tube; its separate male R PT1/8 connection is not another tube socket. The selected A meter-out controller throttles flow from R to T and allows free flow from T to R. Keep that controlled/free-flow relationship when connecting the selected tube; matching OD alone does not determine the correct circuit orientation. Match the separate threaded connection and its seal to the actual equipment without changing the specified thread standard or size. PT, G and NPT are not interchangeable thread standards. Use the PTL push-lock adjustment mechanism and secure its lock after adjustment; keep it accessible when routing the tube. The published adjustment-cap rotation torque for this connection size is 0.08 N·m, not the pipe-thread installation torque. Do not use pliers or excessive force on the adjustment cap.
These selections cover positive-pressure compressed-air service only. The controller has a 0–1.0 MPa working-pressure range; its 1.5 MPa proof pressure is not a working rating. The separately printed −750 mmHg (10 Torr) controller value does not establish vacuum or collapse resistance for these exact PU tubes or the complete assembled path. Dimensional fit alone does not establish liquid service or leak performance.
US98A and UE95A tubing are rated 1.0 MPa at 23°C. Apply the tubing catalogue temperature-derating curve and every stricter controller, tube and system limit; do not assume 1.0 MPa is available throughout the temperature range. US98A has a −20–70°C component range and UE95A −40–70°C. With the controller’s −20–70°C range, the assembled path must stay within −20–70°C or a narrower applicable range. UE95A’s lower component limit does not extend the controller below −20°C. Tube burst pressure and controller proof pressure are not allowable continuous working pressures.
US98A is polyester-based PU, Shore A98±2; UE95A is ether-based PU, Shore A95±2. Each listed complete code specifies its own OD and ID, a 100 m coil (100M) and blue colour (BU). Tube ID affects flow but does not replace OD as the push-in socket selection criterion. These verified standard-pressure examples do not represent every available length, colour or tube construction. The controller’s grey/black body and release-button colour is separate from tube colour; D is a colour option, not a control-direction code.
For T, 6 mm OD × 4 mm ID, the minimum bend radii are US98A 15 mm and UE95A 12 mm. Keep bends clear of each socket and support the tube so that it is not kinked, flattened or pulled against the controller. Confirm insertion depth, retention and sealing, and keep the adjustment and release controls accessible. Isolate and verify zero pressure in the affected tubing before removal; closing a speed controller does not provide guaranteed zero-leakage isolation.
Confirm compatibility of actual air contaminants, lubricant or additives with the controller seals, tube and connected equipment. Follow the PU tubing restrictions on acids, alkalis, organic solvents, seawater, corrosive gases, prolonged sunlight and excessive heat. The retained 2022 Chinese standard PTL component table identifies the throttling body as brass, the throttling column as brass/aluminum alloy, and the throttling sleeve as aluminum alloy. The remaining POM, PBT, NBR and stainless-steel parts keep their individual descriptions. The source describes a nickel-plated brass body; the newer English shared-table numbering does not replace the original component attribution. Selecting PU tubing does not change those materials or establish unrestricted chemical compatibility.
Check the required operating point with the selected tube ID, length and bends as well as the controller’s applicable flow curve and pressure conditions. A plotted axis limit is not a guaranteed assembled flow rating. Confirm the exact complete tube code and current availability before ordering; catalogue inclusion is not a current-production, stock or delivery promise. No additional component or coil quantity is included merely because sockets or internal components appear in the drawing.
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