SMC AC20A-N02-3CZ-D Air Combination, Filter Regulator + Lubricator, 1/4" NPT, 5 Micron, 0.05-0.85 MPa
SMC
$72.40
The SMC AC20A-N02-3CZ-D is a size 20 modular air combination unit pairing an AW20-D filter regulator with an AL20-D lubricator on 1/4" NPT ports. It filters to 5 microns, regulates from 0.05 to 0.85 MPa (7 to 123 psi), and delivers metered lubrication downstream for pneumatic tools, cylinders, and legacy machinery that require lubricated air. This configuration ships with a bowl guard, lubricator drain cock, relieving-type regulator, left-to-right flow, and psi/°F labeling with an MPa/psi dual-scale gauge face for North American installations.
Direct Replacement for the Discontinued AC20A-N02-3CZ-A
SMC ended production of the AC-A series in March 2025. The AC20A-N02-3CZ-D is the factory-designated successor to the AC20A-N02-3CZ-A, carrying the identical configuration code: NPT 1/4 ports, no auto drain, no pressure gauge, bowl guard (C), lubricator drain cock (3), and imperial-unit labeling (Z). It is a like-for-like crossover with no re-specification required. The AC-D series also supersedes the interim AC20A-N02-3CZ-B, which SMC has likewise phased out of production.
What Changed from the AC20A-N02-3CZ-A
Four changes matter for anyone crossing over from the -A unit:
- Wider regulation range. Set pressure extends to 0.05-0.85 MPa (123 psi), up from the 0.05-0.7 MPa (100 psi) ceiling of the AC-A generation, so every existing setpoint carries over.
- Updated pressure monitoring options. The AC-D platform accepts square embedded gauges and ISE35 digital pressure switches in addition to round gauges, so the same body supports upgrades later without repiping.
- Full modular interchangeability. SMC maintained cross-generation compatibility: current Y-D series spacers connect to existing AF-A, AR-B, AL-A, and AW-B bodies, and existing spacers connect to the new -D bodies. Mixed-generation FRL stacks remain serviceable.
- Same footprint. Size 20 body, 1/8" pressure gauge port, relieving construction, and polycarbonate bowls carry over, so panel layouts built around the -A unit translate directly.
Part Number Breakdown: AC20A-N02-3CZ-D
| Code | Meaning |
|---|---|
| AC20A | Air combination, filter regulator + lubricator, body size 20 |
| N02 | NPT thread, 1/4" ports |
| 3 | Lubricator with drain cock |
| C | With bowl guard (steel, semi-standard on size 20) |
| Z | Product label in psi/°F, pressure gauge MPa/psi dual scale (NPT builds) |
| D | AC-D series (current generation) |
Unlisted options default to standard: no float-type auto drain, no factory-mounted pressure gauge, relieving-type exhaust, and left-to-right flow direction.
Specifications
| Specification | AC20A-N02-3CZ-D |
|---|---|
| Components | AW20-D filter regulator + AL20-D lubricator |
| Port size | 1/4" NPT (IN/OUT) |
| Pressure gauge port | 1/8" |
| Set pressure range | 0.05 to 0.85 MPa (approx. 7 to 123 psi) |
| Max. operating pressure | 1.0 MPa (145 psi) |
| Proof pressure | 1.5 MPa |
| Nominal filtration rating | 5 µm |
| Ambient/fluid temperature | -5 to 60 °C (23 to 140 °F), no freezing |
| Drain capacity (filter regulator) | 8 cm³ |
| Oil capacity (lubricator) | 25 cm³ |
| Minimum dripping flow rate | 15 L/min (ANR) |
| Recommended lubricant | Class 1 turbine oil (ISO VG32) |
| Compressed air purity class | ISO 8573-1:2010 [6:4:-] |
| Bowl material | Polycarbonate, with steel bowl guard (C option) |
| Regulator construction | Relieving type |
| Flow direction | Left to right |
| Weight | 0.31 kg |
Mounting and Attachments: What You May Need
The AC20A-N02-3CZ-D ships as a bare two-body combination with no attachment. If your installation mounts the FRL to a panel or machine frame, order the current AC-D series attachment separately:
- Y200T-D spacer with bracket - the standard wall/panel mounting solution for size 20 AC-D units. Replaces the discontinued Y200T-A.
- Y200-D spacer - joins modular bodies where no bracket is required. Replaces the discontinued Y200-A.
SMC ended production of the Y*00-A attachment series in March 2025 alongside the AC-A units, so replacement spacers and brackets should be ordered as Y200-D and Y200T-D going forward. Interchangeability is maintained in both directions: the new Y-D spacers connect to existing-generation modular bodies, and existing spacers connect to the new -D bodies, so mixed installations remain serviceable during transition. SMC's recommended tightening torque for the size 20 spacer set screws is 0.33 to 0.39 N·m.
Frequently Asked Questions
What replaces the SMC AC20A-N02-3CZ-A?
The AC20A-N02-3CZ-D is the direct factory replacement. SMC discontinued the AC-A series in March 2025 and the -D series carries the same configuration codes, so the crossover keeps the identical port size, thread type, bowl guard, lubricator drain cock, and imperial-unit labeling.
Is the AC20A-N02-3CZ-D a drop-in replacement?
Yes for piping and function: same 1/4" NPT ports, same size 20 modular body family, same relieving regulator and left-to-right flow. The regulation range is wider (0.05-0.85 MPa vs 0.05-0.7 MPa), which covers every setting the old unit supported. For bracket-mounted installations, pair it with the current Y200T-D spacer with bracket, since the old Y200T-A is also discontinued.
What does the Z in the part number mean?
The Z semi-standard option specifies psi and °F units on the product label with an MPa/psi dual-scale pressure gauge face. It is the standard specification for NPT-threaded units used in North America.
Does this unit include a pressure gauge or auto drain?
No. This configuration has no factory-mounted gauge and no float-type auto drain; the filter regulator bowl uses a manual drain cock, and the lubricator includes its own drain cock (the 3 option). The AW20-D body accepts a round gauge, square embedded gauge, or ISE35 digital pressure switch on its 1/8" gauge port if monitoring is added later.
Automation Distribution is an authorized SMC distributor. Browse the full range of SMC air combination units, or contact our team at 1-888-600-3080 for crossover help on any discontinued SMC part number.
