- Port size: 1/4, 3/8, 1/2.
- Lightweight.
- Transparent bowl guard.
- Easier maintenance.
- Increase in condensate discharge.
Series image. Appearance may vary by model and options.AD402-A
AD402-A, Auto Drain Valve
Explore the features, model options and technical documentation for AD402-A. Contact Pnoneks to select the full part number for your application.
Request a quote for your application.
Share your part number and quantity so we can confirm pricing and lead time.
Selecting AD402-A
Selecting AD402-A: review the full part number and your system conditions when considering this Air preparation record. Share Thread, Port Size, Auto Drain, Bowl, Valve, Pressure Unit, the required quantity and your application notes with Pnoneks. Final compatibility and lead time are confirmed during quotation.
The essentials for selection.
- Manufacturer
- SMC
- Series
- AD402-A
- Product group
- Air preparation
- Function
- Drain & Auto Drain Valves
- Applications
- Suitability is evaluated against technical specifications and application conditions.
- Selection parameters
- Thread, Port Size, Auto Drain, Bowl, Valve, Pressure Unit
Exact dimensions, operating ranges and compatibility depend on the full part number. Review the relevant SMC documentation and application conditions for technical selection.
Features and model options
Technical descriptions and values below are preserved in the manufacturer’s original language. Options describe alternatives within the series; not every combination is valid. We will verify the full part number when quoting.
| Parameter | Options / values |
|---|---|
| Thread | Rc · F (G) · N (NPT) |
| Port Size | 02 (1/4) · 03 (3/8) · 04 (1/2) |
| Auto Drain | C [N.C. (Normally Closed)] · D [N.O. (Normally Open)] |
| Bowl | Polycarbonate Bowl · 2 (Metal Bowl) · 6 (Nylon Bowl) |
| Valve | None · V (w/Bleed Valve) |
| Pressure Unit | Name Plate and Caution Plate for Bowl in SI Units · Z (Name Plate and Caution Plate for Bowl in Imperial Units) |



