- Release any pressure over the set range into the atmosphere
- Maintain constant pressure in the piping
- Port size: 1/8 and 1/4
- Max. flow rate: 500 l/min
- Modular connection compatible with AC-D series.
Series image. Appearance may vary by model and options.AP20-D
AP20-D, Modular Type Relief Valve
Explore the features, model options and technical documentation for AP20-D. Contact Pnoneks to select the full part number for your application.
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Selecting AP20-D
Selecting AP20-D: review the full part number and your system conditions when considering this Air preparation record. Share Body Size, Thread, Port Size, Accessories, Plug, Silencer, Set pressure, Knob, Pressure Units, 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
- AP20-D
- Product group
- Air preparation
- Function
- Pressure Regulators
- Applications
- Suitability is evaluated against technical specifications and application conditions.
- Selection parameters
- Body Size, Thread, Port Size, Accessories, Plug, Silencer, Set pressure, Knob, Pressure Units
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 |
|---|---|
| Body Size | 20 |
| Thread | Rc · F (G) · N (NPT) |
| Port Size | 01 (1/8) · 02 (1/4) |
| Accessories | None · B (With Bracket) · H (w/Set Nut, for Panel Mount) · E (Square embedded type pressure gauge [with limit indicator]) · G (Round Pressure Gauge w/Limit Indicator) · M [Round type pressure gauge (with colour zone)] · BE (w/Bracket + Square embedded type pressure gauge [with limit indicator]) · BG (Bracket + Round type pressure gauge [with limit indicator]) · BM (Bracket + Round Pressure Gauge [with Colour Zone]) · EH (Square embedded type pressure gauge [with limit indicator] + w/Set Nut, for Panel Mount) · GH (Round type pressure gauge [with limit indicator] + w/Set Nut, for Panel Mount) · HM (w/Set Nut, for Panel Mount + Round type pressure gauge [with colour zone]) |
| Plug | w/o Plug · N (With Plug for IN Port) |
| Silencer | w/o Silencer · S (With Built-in Silencer for EXH Port) |
| Set pressure | 0.05 to 0.8 MPa Setting · 1 (0.02 to 0.2 MPa setting) |
| Knob | Downward · Y (Upward) |
| Pressure Units | Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa · Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale) |



