SMC AR20-N02B-1Z-D Regulator, 1/4" NPT, 0.02-0.2 MPa, Relieving, With Bracket
SMC
$20.05
The SMC AR20-N02B-1Z-D is a size 20 modular air regulator with 1/4" NPT ports, a low-pressure setting range of 0.02 to 0.2 MPa (approximately 3 to 29 psi), a relieving-type exhaust mechanism, and an included mounting bracket. It reduces and holds downstream air pressure at a stable setpoint, making it the pressure-control stage in a modular F.R.L. air preparation station.
This is the current AR-D generation body. It uses a relieving design, so if downstream pressure rises above the setpoint the excess is vented rather than held, and it ships with a downward-facing adjustment knob that is easy to hold when unlocked. The product label reads in psi and °F, and the pressure gauge uses an MPa / psi dual scale for North American service.
Replacing a legacy unit? The AR20-N02B-1Z-D is a direct, drop-in replacement for the SMC AR20-N02B-1Z. See crossover details below.
Key Specifications
| Model | AR20-N02B-1Z-D |
| Type | Modular air regulator |
| Series | AR-D (D-series modular) |
| Body Size | 20 |
| Port Size | 1/4" NPT |
| Set Pressure Range | 0.02 to 0.2 MPa (approx. 3 to 29 psi) |
| Exhaust Mechanism | Relieving type |
| Bracket | Included (with bracket) |
| Backflow Function | Without backflow function |
| Flow Direction | Left to right |
| Knob | Downward |
| Unit Label | psi, °F; gauge MPa / psi dual scale |
Maximum supply pressure, proof pressure, and temperature ranges follow the standard AR-D series datasheet. Confirm exact values against the SMC datasheet for your application.
Part Number Breakdown: AR20-N02B-1Z-D
| AR | Modular air regulator |
| 20 | Body size 20 |
| N | NPT thread type |
| 02 | 1/4" port size |
| B | With bracket |
| 1 | Set pressure 0.02 to 0.2 MPa |
| Z | Unit label psi, °F; gauge MPa / psi dual scale |
| D | D-series modular body (current generation) |
Typical Applications
- Setting and holding stable downstream pressure in a modular F.R.L. air preparation station
- Low-pressure control in the 0.02 to 0.2 MPa range, such as air blow, light clamping, and tensioning
- Circuits where a relieving regulator is needed to bleed off excess downstream pressure automatically
- Feeding regulated air to pneumatic valves, actuators, and tools that require a set inlet pressure
Maintenance Parts
| Valve Assembly | AR24P-060AS |
| Diaphragm Assembly | AR24P-150AS |
| Valve Guide Assembly | AR24P-050AS |
| Bracket Assembly | AR23P-270AS |
Replacing an AR20-N02B-1Z
The AR20-N02B-1Z-D is the current AR-D generation of this regulator, superseding the legacy AR20-N02B-1Z. SMC maintains panel-mount interchangeability across the generations: the panel mounting pitch carries over, and brackets and set nuts are common to the existing and new products.
|
Legacy Part
AR20-N02B-1Z
Prior generation
|
→ |
Current Replacement
AR20-N02B-1Z-D
Current AR-D body
|
The connection, configuration, and mounting all carry over, so it drops into an existing AR20-N02B-1Z installation without rework:
- Same 1/4" NPT connection and left-to-right flow direction
- Interchangeable panel-mount pitch; brackets and set nuts common to both
- Same 0.02 to 0.2 MPa relieving-type pressure control
- Same psi / °F labeling and MPa / psi dual-scale gauge
Note: valve, diaphragm, and bracket service parts are listed above. If you are transitioning a fleet of older units, standardize your spares inventory on the current AR-D maintenance parts going forward.
Frequently Asked Questions
What does the AR20-N02B-1Z-D do?
It is a modular air regulator. It reduces incoming compressed air to a stable, adjustable downstream pressure and holds it at the setpoint. The relieving design also vents excess downstream pressure automatically if it rises above the set value.
What is the pressure setting range?
This configuration uses the "1" low-pressure setting of 0.02 to 0.2 MPa, roughly 3 to 29 psi. That makes it suited to low-pressure control tasks rather than full-line pressure regulation.
Does it come with a bracket?
Yes. The "B" in the part number specifies the unit ships with a mounting bracket.
Is the AR20-N02B-1Z-D a direct replacement for the AR20-N02B-1Z?
Yes. It is the current AR-D generation that supersedes the legacy AR20-N02B-1Z. The panel-mount pitch is interchangeable and the brackets and set nuts are common to both, so it drops into an existing installation without rework.
What does "relieving type" mean?
A relieving regulator vents air from the downstream side to atmosphere when downstream pressure exceeds the setpoint, so the pressure self-corrects back down. A non-relieving regulator would hold that excess instead.
The SMC AR20-N02B-1Z-D is distributed by Automation Distribution, an authorized SMC distributor. For application help, cross-references from legacy AR part numbers, or quantity pricing, contact our team at 1-888-600-3080.
- Body Size:
- 20
- With Backflow Function:
- Without Backflow Function
- Pipe Thread Type:
- NPT
- Port Size:
- 1/4
- Bracket:
- With Bracket
- Digital Pressure Switch:
- Without Digital Pressure Switch
- Pressure Gauge/Mounting Option:
- Without Pressure Gauge,Without Mounting Option
- Set Pressure:
- 0.02 To 0.2 Mpa Setting
- Exhaust Mechanism:
- Relieving Type
- Flow Direction:
- Flow Direction:Left To Right
- Knob:
- Downward
- Unit Representation:
- Unit On Product Label:psi,°F,Pressure Gauge:MPa/psi Dual Scale
- Made To Order:
- Standard
