
The AirTAC Airtac GAC F.R.L. Unit GAC400C10LK 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 3/8" ports, a 40 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi).
Delivering cleaned, regulated and lubricated air for downstream pneumatics, this AirTAC GAC400C10LK is a complete three-unit F.R.L. combination pre-plumbed on a single L-shape bracket. The 3/8in port pairs with a robust metal bowl and a 40 um element, while the lower-pressure type governs the outlet range from 0.15 to 0.4 MPa (20-58 psi). A fitted circular gauge reads in MPa/psi for the default PT thread.
Air passes through the filter, then the regulator, and finally the lubricator, ensuring oil mist is added downstream so the regulator seat never fouls. Weighing 2390 g, this body pairs a 100 cc condensate bowl with a 185 cc oil reservoir. The reverse-flow (reflux) valve is fitted, shown as a separate pneumatic symbol in the catalogue, and the assembly uses quick mounting clamps to eliminate inter-unit tubing leaks.
| Model | Airtac GAC F.R.L. Unit GAC400C10LK |
|---|---|
| Series | GAC400 F.R.L. combination |
| Port size | 3/8" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Metal |
| 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code.
| 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). |
| 10 | Port size 3/8". 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). |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
Constituent units, orderable separately as spares: GAF400-10 filter, GAR400-10 regulator, GAL400-10 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 · 3/8" · 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 delicate actuator circuits on CNC fixturing where outlet pressure must stay strictly under 0.4 MPa to prevent workpiece deformation.
Conditions air for small pick-and-place grippers and sealing jaws that rely on a steady, lower-pressure supply and consistent oil mist for moving seals.
Prepares instrument air for benchtop pneumatic stations, using the metal bowl and 40 um filter to protect sensitive valves from particulate ingress.
Choose this 3/8in model for low-pressure duties up to 0.4 MPa where a metal bowl is preferred for the environment. It carries a semi-auto and manual drain pair, meaning the semi-auto dumps condensate on each pressure drop while the manual mode allows on-demand emptying. If your machine requires oil-free air downstream, you must omit the lubricator and select a dedicated filter-regulator instead. Should a component fail, the assembly splits into separately orderable spares: GAF400-10, GAR400-10 and GAL400-10. Stepping up to the GAC500 roughly doubles the plotted flow envelope from 6000 to 7000 L/min at 0.7 MPa inlet, but selecting this L-type restricts your ceiling to 44% of the standard 0.9 MPa maximum.
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 regulates from 0.15 to 0.4 MPa (20-58 psi) and carries a maximum pressure of 1.0 MPa (145 psi) with a 1.5 MPa (215 psi) proof rating. It operates from -5 to 70 C, weighs 2390 g, holds 100 cc of condensate and 185 cc of oil, and uses ISO VG 32 lubricant.
The K indicates a reverse-flow (reflux) valve is fitted. The official AirTAC catalogue depicts this as a separate pneumatic symbol on its own page, and specific functional details should be confirmed from that datasheet.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.