The SMC Modular F.R.L. Units AC-D Series represents the current generation of modular air preparation units designed for efficiency and ease of maintenance.
・Modular design with uniform body style
・Better visibility & environmental resistance
・2-layer construction: The bowl is covered with a transparent bowl guard!
Better visibility: 360°
・No tools are required.
Easier replacement of the element (AF-D only)
・Attachments:
Spacer: Y200-D, Y300-D, Y400-D
Spacer with bracket: Y200T-D, Y300T-D, Y400T-D
For detailed dimensional drawings, specific model data, or to clarify any technical aspects, please do not hesitate to contact the sales team at Kateteco Company.
This series features a compact, integrated modular design that allows for flexible combination of essential functions—Filtration, Regulation, and Lubrication—into a single, streamlined assembly.
A key innovation is the 360° transparent bowl cover, which significantly improves visibility and protects the bowl from the environment. The series emphasizes maintenance efficiency, with tool-less filter element replacement for specific models and a modern, ergonomic handwheel on the regulator for easy pressure adjustment. This series is the designated replacement for the discontinued AC-A and AC-B generations.
The AC-D series offers multiple standard combinations to suit different application needs. The core specifications are summarized below:
| Description | Series | Port size |
|---|---|---|
| Air filter, Regulator, Lubricator | AC20 to 60-D | 1/8,1/4,3/8,1/2,3/4,1 |
| Filter regulator, Lubricator | AC20A to 60A-D | 1/8,1/4,3/8,1/2,3/4,1 |
| Air filter, Regulator | AC20B to 60B-D | 1/8,1/4,3/8,1/2,3/4,1 |
| Air filter, Mist separator, Regulator | AC20C to 40C-D | 1/8,1/4,3/8,1/2 |
| Filter regulator, Mist separator | AC20D to 40D-D | 1/8,1/4,3/8,1/2 |
Note: The series also includes a low-pressure range option of 0.02 – 0.2 MPa for precision applications.
Replacement Guide: If you are currently using the older AC-A or AC-B series, the AC-D series is the direct successor and recommended replacement.
Modular Flexibility: You can start with a Filter-Regulator (AC**B-D) and later add a Lubricator module in the field if needed, offering great planning flexibility.
High-Purity Options: For applications requiring very clean air (e.g., food packaging, precision instruments), choose the AC20C-D configuration with an oil mist separator. Higher-grade micro mist separators (AFD-D series) with 0.01μm filtration are also available as standalone units or for system upgrades.
I hope this description and the detailed specifications are helpful. If you need information on a specific model within the AC-D series (like AC30-D) or its compatible accessories, feel free to ask.
Imported brand The product styles are rich anddiverse Professiona quality and service

KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson’s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.
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