
The AirTAC Airtac GAC F.R.L. Unit GAC400C15ASNWK is a genuine three-unit F.R.L. combination — a filter, a pressure regulator and a lubricator pre-assembled on one bracket with quick mounting clamps. It has 1/2" ports, a 5 µm filter element and regulates 0.15 - 0.9 MPa (20 - 130 psi).
Delivering cleaned, regulated and lubricated air for demanding pneumatics, this GAC400C15ASNWK assembly integrates a filter, regulator and lubricator on a single L-shape bracket. The 1/2in port pairs with a 2390 g mass, placing it firmly in a mid-to-heavy size class that requires a proper panel or frame mount rather than tubing support. Air passes through the filter first, then the regulator, with oil mist added last so the internal seat never fouls. A 5 um element traps far finer particles than the 40 um standard, suiting precision valves and instrument air at the cost of more frequent element service.
This specific configuration uses a robust metal bowl and an automatic drain that clears condensate without an operator, a decisive feature for unattended or wet lines. No gauge is supplied, but the body features a 1/4in gauge connection if one needs to be added later to read the set pressure. The reverse-flow (reflux) valve is fitted, which the catalogue shows as a separate pneumatic symbol with details on its own page. Operating pressure spans 0.15-0.9 MPa (20-130 psi), while the ambient and fluid range sits at -5 to 70 C.
| Model | Airtac GAC F.R.L. Unit GAC400C15ASNWK |
|---|---|
| Series | GAC400 F.R.L. combination |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| Bowl material | Metal |
| Drain type | Automatic drain |
| Fluid | Air |
|---|---|
| Max. pressure | 1.0 MPa (145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 100 cc |
| Capacity of oil bowl | 185 cc |
| Recommended lubricant | ISO VG 32 or equivalent |
| Weight | 2390 g |
Specifications follow the official AirTAC GAC catalogue (pages 216-217). Air must not freeze in the unit. No gauge is supplied with this model — the gauge connection on a GAC400 is 1/4" if you add one.
| GAC400 | GA400 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 15 | Port size 1/2". This body offers 10 = 3/8", 15 = 1/2". |
| A | Drain: Automatic drain. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| N | No pressure gauge; 1/4" gauge connection. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
Constituent units, orderable separately as spares: GAF400-15 filter, GAR400-15 regulator, GAL400-15 lubricator — all three share this body and port.
Figures are the end of the flow curve plotted in the AirTAC catalogue at 0.7 MPa inlet pressure — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. Outlet pressure falls as flow rises, so size a body with headroom above your peak demand.
| This model | GAC400 · 1/2" · curve to 6000 L/min |
|---|---|
| One size down | GAC300 |
| One size up | GAC500 (curve to 7000 L/min) |
| Build order | Filter → bracket → regulator → lubricator |
Feeds precision air bearings and fine pneumatic spindles where the 5 um element protects tight tolerances from particulate fouling.
Conditions the main 1/2in air header for multi-station robotic cells, relying on the automatic drain to handle continuous moisture.
Supplies oil-misted air to fast pneumatic grippers and diverters, ensuring consistent lubrication for high-cycle moving parts.
Choose this configuration when a machine requires fine 5 um filtration and unattended condensate management. The 100 cc drain bowl and 185 cc oil bowl dictate the service interval, meaning fewer interventions than a smaller GAC300 unit. Because oil mist is added downstream, select a separate filter-regulator instead if the downstream line must remain strictly oil-free. The PT thread sets a MPa/psi gauge scale for operators, though you will need to supply your own gauge. If a part fails, the three units are separately orderable as GAF400-15, GAR400-15 and GAL400-15.
Stepping up from the GAC300 body increases the plotted flow curve from 3000 to 6000 L/min at 0.7 MPa inlet, effectively doubling the sizing envelope. Meanwhile, the 1.5 MPa (215 psi) proof pressure provides a 1.5x burst-test margin over the 1.0 MPa (145 psi) maximum, which is a safety rating rather than permission to run above the limit.
Quick checklist
The lubricator adds an oil mist downstream of the regulator. If any part of the line must stay oil-free, use a filter-regulator instead of an F.R.L. combination on that branch.
This standard type unit regulates from 0.15-0.9 MPa (20-130 psi) with a maximum pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It operates in temperatures from -5 to 70 C using ISO VG 32 lubricant. The drain bowl holds 100 cc and the oil bowl holds 185 cc, while the entire assembly weighs 2390 g.
The N after the port means no gauge is supplied, though a 1/4in connection exists to add one. The K indicates a reverse-flow (reflux) valve is fitted, which the catalogue draws as a separate pneumatic symbol with details on its own page.
Genuine AirTAC parts produced by AirTAC factory.
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