SMC AS Series Speed Controller Speed Controller, AS4201FG-04-12S, Inlet Male, 1/2 in R R 1/2 in, Outlet Female One-touch
- RS Stock No.:
- 393-729
- Mfr. Part No.:
- AS4201FG-04-12S
- Brand:
- SMC
Subtotal (1 unit)*
£40.37
(exc. VAT)
£48.44
(inc. VAT)
FREE delivery for orders over £60.00
Limited stock
- Plus 2 left, shipping from 15 June 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £40.37 |
*price indicative
- RS Stock No.:
- 393-729
- Mfr. Part No.:
- AS4201FG-04-12S
- Brand:
- SMC
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | SMC | |
| Product Type | Speed Controller | |
| Outlet Connection Type | One-touch Fitting | |
| Inlet Connection Type | 1/2 in R | |
| Sub Type | Speed Controller | |
| Inlet Connection Size | 1/2 in | |
| Outlet Connection Size | 12 mm | |
| Series | AS | |
| Inlet Thread Standard | R | |
| Maximum Operating Pressure | 1.0 Mpa | |
| Inlet Port Gender | Male | |
| Material | Stainless Steel, Polybutylene Terephthalate | |
| Minimum Operating Temperature | -5°C | |
| Outlet Port Gender | Female | |
| Maximum Operating Temperature | 60°C | |
| Standards/Approvals | ISO 4414, JIS B 8370, ISO 14001, RoHS, ISO 9001 | |
| Hazardous Area Certification | No | |
| Minimum Operating Pressure | 0.1MPa | |
| Proof Pressure | 1.5MPa | |
| Model Number | AS4201FG-04-12S | |
| Select all | ||
|---|---|---|
Brand SMC | ||
Product Type Speed Controller | ||
Outlet Connection Type One-touch Fitting | ||
Inlet Connection Type 1/2 in R | ||
Sub Type Speed Controller | ||
Inlet Connection Size 1/2 in | ||
Outlet Connection Size 12 mm | ||
Series AS | ||
Inlet Thread Standard R | ||
Maximum Operating Pressure 1.0 Mpa | ||
Inlet Port Gender Male | ||
Material Stainless Steel, Polybutylene Terephthalate | ||
Minimum Operating Temperature -5°C | ||
Outlet Port Gender Female | ||
Maximum Operating Temperature 60°C | ||
Standards/Approvals ISO 4414, JIS B 8370, ISO 14001, RoHS, ISO 9001 | ||
Hazardous Area Certification No | ||
Minimum Operating Pressure 0.1MPa | ||
Proof Pressure 1.5MPa | ||
Model Number AS4201FG-04-12S | ||
- COO (Country of Origin):
- JP
SMC Series AS Speed Controller, 1/2 inches Inlet size, 12mm Outlet size - AS4201FG-04-12S
This speed controller regulates Airflow to control actuator motion in pneumatic systems. It is intended for industrial automation and mechanical applications where controlled Air flow and consistent operation are required. Constructed from stainless steel and polybutylene terephthalate, it is suitable for installations requiring robust wetted parts and disciplined flow adjustment within typical pneumatic networks.
Features & Benefits
• Maximum operating pressure 1.0MPa for demanding pneumatic circuits
• Proof pressure 1.5MPa enhances transient pressure tolerance
• Minimum operating pressure 0.1MPa ensures function at low supply pressures
• Operating temperature range -5°C to 60°C supports varied plant environments
• 1/2 inches R male inlet simplifies connection to standard R-threaded piping
• 12mm one-touch female outlet enables fast tube installation
• Proof pressure 1.5MPa enhances transient pressure tolerance
• Minimum operating pressure 0.1MPa ensures function at low supply pressures
• Operating temperature range -5°C to 60°C supports varied plant environments
• 1/2 inches R male inlet simplifies connection to standard R-threaded piping
• 12mm one-touch female outlet enables fast tube installation
**Applications**
• Suitable for controlling cylinder speed in assembly line automation
• Ideal for flow regulation in compressed-air distribution panels
• Used with pick-and-place actuators to tune end-of-stroke deceleration
• Can be used for machine tool auxiliary pneumatic circuits
• Used for regulating feed speed in packaging equipment
• Ideal for flow regulation in compressed-air distribution panels
• Used with pick-and-place actuators to tune end-of-stroke deceleration
• Can be used for machine tool auxiliary pneumatic circuits
• Used for regulating feed speed in packaging equipment
What materials contact the airflow and how do they affect longevity?
The internal flow path uses stainless steel for corrosion resistance while polybutylene terephthalate components provide lightweight, wear‑resistant sealing interfaces.
How does the connection configuration aid installation?
The inlet uses a 1/2 inches R male thread compatible with R‑standard fittings and the outlet accepts a 12mm one‑touch tube for Rapid line changes without tools.
What standards relate to its operational and management practices?
The product aligns with ISO 4414 and JIS B 8370 for pneumatic system guidelines and is manufactured under ISO 9001 and ISO 14001 frameworks with RoHS considerations.
How does the device behave under pressure excursions?
It is rated to operate up to 1.0MPa and withstand short‑term pressure peaks up to 1.5MPa as a proof pressure limit.
Related links
- SMC AS Series Speed Controller Speed Controller Inlet Male Outlet Female Tube
- SMC ASD Series Speed Controller Speed Controller Inlet Male Outlet Female Tube
- SMC ASG Series Speed Controller Speed Controller Inlet Male Outlet Female Tube
- SMC AS Series Speed Controller Speed Controller Inlet Male Outlet Female
- SMC AS-FG Series Speed Controller Speed Controller Inlet Male Outlet Female Tube
- SMC ASD Series Speed Controller Speed Controller Inlet Male Outlet Female Tube
- SMC ASG Series Speed Controller Speed Controller Inlet Male Outlet Female Tube
- SMC AS Series Speed Controller Speed Controller Inlet Male Outlet Female One-touch