Specifications: PSS1003AD-S is an Airtac universal speed controller. Universal speed controller; Tube outside diameter: 10 mm; Connection: PT 3/8; Meter-out, adjustment cap marked A; Black release button and body; PT pipe thread; M5 remains the metric M5×0.8 thread when selected.; SUS304 stainless-steel version; see the component table for individual materials..
Product Catalog
Download Airtac Product Catalog (PDF)
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Material scope: S identifies the SUS304 version. The component table specifies a SUS304 throttling column, an aluminum-alloy/SUS304 throttling-body entry, and the other aluminum, polymer, NBR and stainless-steel parts listed below. The table does not allocate the aluminum-alloy/SUS304 alternatives to individual body sub-parts. The generic nickel-plated-brass feature sentence is not used as the material specification for this S-coded model. Material claims apply to the named components only; no all-stainless or whole-product copper-free construction is asserted.
Model Code Explained
Code
Meaning
PSS
Universal speed controller
10
Tube outside diameter: 10 mm
03
Connection: PT 3/8
A
Meter-out, adjustment cap marked A
D
Black release button and body
(blank thread code)
PT pipe thread; M5 remains the metric M5×0.8 thread when selected.
S
SUS304 stainless-steel version; see the component table for individual materials.
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
10 mm
Application
Connect to the specified soft-nylon or polyurethane tube size and PT 3/8 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.
The regulating rod has an anti-drop structure; the threaded portion is coated with sealant.
The tube-insertion orientation of the universal PSS design can be adjusted through 360 degrees.
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
10 mm
R
3/8
ØPA
18 mm
ØPB
22.5 mm
L
11 mm
C max
52.5 mm
C min
45.5 mm
K
21 mm
EA
24 mm
EB
20 mm
H (across flats)
19 mm
Source: Linked stainless PSA/PSL/PSS PDF page 2 printed page 321; A/B share dimensions.
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Catalog reference weight: 61.5 g. This is a published reference, not a measured shipping weight; actual product weight governs.
Selection, Installation and Use
The A meter-out type controls flow from the threaded end to the tubing end and allows free flow from the tubing end to the threaded end. The B meter-in type reverses these controlled and free-flow directions. The cap is marked A or B.
Select the control method for the application. The general controller instructions give meter-out priority and illustrate it with a double-acting cylinder; the meter-in example uses a single-acting cylinder.
Push the tubing fully into the fitting until it stops and is retained by the spring gasket. To remove it, first make sure the tubing pressure is zero, press the release button, then withdraw the tubing.
Install the threaded controller at the cylinder port using a wrench on its hexagon. The instructions refer to the fitting information for thread tightening torque and screw-in depth; the adjustment-cap torque is a separate value.
Close the controller before first applying air pressure. Open the needle slowly from the closed position: clockwise reduces flow and actuator speed, while counterclockwise increases them. On the conventional controller, tighten the locking cap after adjustment.
Turn the adjustment by hand; do not use pliers or apply excessive force or impact at either end of its travel.
Some internal leakage is permitted when closed. This controller is not intended to serve as a zero-leakage shut-off valve.
Flow / Performance Characteristics
The corresponding PSS family chart plots controlled flow 0–1200 L/min (ANR) against adjustment 0–14 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 1400 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 current source edition and its applicable internal-structure drawing.
Part / name
Material
1 — Adjusting cap
Aluminum alloy
2 — Locking cap
Aluminum alloy
3 — Throttling column
SUS304
4 — Throttling body
Aluminum alloy / SUS304
5 — O-ring
NBR
6 — O-ring
NBR
7 — Holder
PBT
8 — O-ring
NBR
9 — Throttling sleeve
Aluminum alloy
10 — Plastic body
PBT
11 — O-ring
NBR
12 — Plastic body
PBT
13 — O-ring
NBR
14 — Locating seat
POM
15 — Spring gasket
Stainless steel
16 — Locating ring
Aluminum alloy
17 — Plastic interface
POM
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.
Optional Matching PU Tubing
T = 1 push-in socket for 10 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 PT3/8 connection, not a tube socket. A meter-out controls R → T and allows free flow T → R. 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
10 × 6.5: UE95A100065100MBU,US98A100065100MBU
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 PSS T socket receives 10 mm OD tube; its separate male R PT3/8 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.
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, 10 mm OD × 6.5 mm ID, the minimum bend radii are US98A 25 mm and UE95A 20 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 S material option and named component materials in the original description do not certify an all-stainless or copper-free assembled path or 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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