
The AirTAC Airtac GAC F.R.L. Unit GAC400N15LNW 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 - 0.4 MPa (20 - 58 psi).
Delivering cleaned, regulated and lubricated air for mid-size pneumatic setups, this AirTAC unit combines a filter, regulator and lubricator on a single L-shape bracket. It features a 1/2in port, a 5 um element for fine particle capture, and a nylon bowl. Because the lubricator adds oil mist downstream of the regulator seat, the internal components stay clean during operation.
This lower-pressure type regulates between 0.15-0.4 MPa (20-58 psi). No gauge is supplied, but a 1/4in connection is available if you need to add one later. Weighing 2390 g, the assembly needs a solid frame mount rather than tubing support, and its 100 cc drain bowl with 185 cc oil capacity sets the maintenance interval for the machine.
| Model | Airtac GAC F.R.L. Unit GAC400N15LNW |
|---|---|
| Series | GAC400 F.R.L. combination |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Nylon |
| Drain type | Semi-auto drain + manual 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. |
|---|---|
| N | Bowl material: Nylon. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 15 | Port size 1/2". This body offers 10 = 3/8", 15 = 1/2". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 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. |
| (blank) | No reverse-flow valve. |
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 sensitive directional control valves in packaging machinery where the 5 um element prevents sticking and the 0.4 MPa ceiling protects delicate actuators.
Conditions supply air for low-pressure lab-scale agitators and grippers, providing a steady oil mist while the semi-auto drain handles intermittent condensate.
Prepares the main 1/2in air supply for a multi-station assembly bench, using the 185 cc oil bowl to extend the time between manual top-ups.
Choose this GAC400 model for its 5 um filtration grade, which traps far finer particles than the standard 40 um element, making it ideal for precision valves or instrument air at the cost of more frequent element service. The nylon bowl offers a lightweight alternative to the standard PC or metal options, though buyers should confirm chemical compatibility for aggressive surroundings. If the downstream line must remain oil-free, omit the lubricator and choose a filter-regulator instead. The three units are separately orderable as GAF400-15, GAR400-15 and GAL400-15, so a clogged element does not require replacing the whole assembly. Keep in mind the L type tops out at 0.4 MPa, which is 44% of the Standard type's 0.9 MPa ceiling.
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 lower-pressure unit operates at 0.15-0.4 MPa (20-58 psi) with a maximum pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C, and the recommended lubricant is ISO VG 32. It features a 1/2in port, a 100 cc drain bowl, a 185 cc oil bowl, and weighs 2390 g.
The N in the ordering code means no gauge is supplied from the factory. The body has a 1/4in gauge connection machined in, so you can install your own gauge to read the set pressure. Because this is a PT thread model, the standard gauge scale to match is MPa/psi.
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Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.