OBSOLETE - This item has been discontinued by SMC.
Superseded by the SMC AR-D Series. See replacement and crossover details below.
SMC AR30K-N02BG-1Z Modular Air Regulator (Discontinued)
The SMC AR30K-N02BG-1Z is a modular, relieving-type pneumatic regulator from the AR family: body size 30, 1/4" NPT ports, with backflow function. It is part of SMC's modular air-preparation (F.R.L.) system and has been discontinued by SMC.
Recommended Replacement
SMC AR-D Series
SMC ended production of the AR-A and AR-B regulator generations in March 2025. The current replacement is the AR-D series, which maintains panel-mount interchangeability with the previous AR models. Confirm the exact configured part number for your ports, gauge, and mounting options.
| Discontinued part | AR30K-N02BG-1Z |
| Status | Discontinued by SMC |
| Replacement | SMC AR-D Series |
Part Number Breakdown: AR30K-N02BG-1Z
| Segment | Code | Meaning |
|---|---|---|
| Series | AR | Modular air regulator |
| Body size | 30 | Size 30 body |
| Thread / port | N02 | NPT thread, 1/4" port |
| Backflow | K | With backflow function |
Specifications
| Series | AR (modular), relieving type |
| Body size | 30 |
| Port size / thread | 1/4" NPT |
| Backflow function | Yes |
| Max operating pressure | 1.0 MPa (approx. 145 psi) |
| Set pressure range | 0.05-0.85 MPa (approx. 7-123 psi), series standard |
| Regulation type | Relieving |
| Body material | Die-cast aluminum |
Specifying This Unit in a New Design
Do not design the AR30K-N02BG-1Z into new equipment - it is discontinued and future availability is limited to remaining channel stock. For new builds, specify the equivalent SMC AR-D regulator. The AR-D is panel-mount interchangeable with the legacy AR and raises maximum set pressure to 125 psi. Use this page only to identify the correct current replacement for an existing installation.
Crossover Notes
- The AR-A and AR-B regulator generations ended production in March 2025; the AR-D series is the current replacement.
- AR-D maintains panel-mount pitch interchangeability with the AR(K)-B series; brackets and set nuts are shared.
- Match port size, thread type, gauge, and backflow (K) options when selecting the AR-D equivalent.
- Confirm the exact configured replacement part number with Automation Distribution before ordering.
Frequently Asked Questions
Is the SMC AR30K-N02BG-1Z still available?
No. It has been discontinued by SMC. The current replacement is the equivalent AR-D series regulator.
What replaces the AR30K-N02BG-1Z?
The equivalent SMC AR-D series regulator. AR-D is panel-mount interchangeable with the legacy AR line.
Is the AR-D a drop-in for my existing installation?
AR-D maintains panel-mount interchangeability with previous AR models. Confirm port, gauge, and mounting options match your original spec before ordering.
Need the current replacement for your AR30K-N02BG-1Z?
Automation Distribution is an authorized SMC distributor. We will confirm the correct crossover for your configuration. Call 1-888-600-3080.
View the SMC AR-D replacement- Size:
- 3/8
- Reverse Flow:
- Regulator w/Backflow Mechanism
- Thread:
- NPT
- Port Size:
- 1/4
- Accessory:
- B+G
- Option 1:
- 0.02~0.2MPa Setting
- Option 2:
- Name Plate & Pressure Gauge in Imperial Units, PSI, øF
