Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW is a genuine two-in-one filter & regulator — a diversion-type water/particulate filter and a balanced pressure regulator built into ONE body. It has 3/8" ports, a 5 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/8"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW
The GAFR400C10LNW is a filter and regulator combined into a single body, saving rail space and reducing potential leak points compared to separate units. It handles a 3/8in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi), with a 5 um element for fine filtration.
This model features a metal bowl and comes with the mounting bracket included. The diversion structure spins incoming air to separate liquid water and solid particles into the 100 cc drain bowl, while the balanced regulator maintains a steady outlet pressure as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 5 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 |
| Bracket | Included |
| Weight | 880 g |
Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. No gauge is supplied with this model — the gauge connection on a GAFR400 is 1/4" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-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) | Mounting bracket included. |
| 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. |
The filter and the regulator are ONE body here — there is no separate GAF filter or GAR regulator part to assemble. Need lubrication downstream too? Add a lubricator by ordering the matching GAFC400-10 F.R.L. combination instead.
Size Class & Flow Envelope
- GAFR2001/8"-1/4" · 2000 L/min
- GAFR3001/4"-1/2" · 3500 L/min
- GAFR4003/8"-1/2" · 7000 L/min
- GAFR5003/4" · 8000 L/min
- GAFR6003/4"-1" · 12000 L/min
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 | GAFR400 · 3/8" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-10 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require clean, regulated air at a stable lower pressure, protecting them from supply fluctuations.
Medium assembly line
Supply a medium-duty assembly station with filtered air at a consistent lower pressure for pneumatic tools and actuators, with the 100 cc bowl reducing drain frequency.
Instrument air supply
Provide 5 um filtered air to sensitive instruments or gauges in a test rig, where the lower pressure range and fine filtration protect delicate components.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW the Right Air-Prep Unit?
Choose the GAFR400 body for medium-flow applications; its 7000 L/min flow envelope at 0.7 MPa inlet inlet sits between the smaller GAFR300 and the larger GAFR500. The metal bowl (C) is a build choice for the environment, while the 5 um element (W) traps finer particles than the standard 40 um, though it will need more frequent service. This unit has the semi-auto and manual drains fitted, includes the bracket, and has no gauge, so the 1/4in gauge connection is available if you add one later. The L type tops out at 0.4 MPa, so if the machine may need more pressure, the standard S type is the right choice. If oil is needed downstream, order the matching GAFC400-10 combination instead. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range.
Quick checklist
- ✓ Body size for your peak flow (3/8" here)
- ✓ Standard 0.9 MPa or lower-pressure 0.4 MPa
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Element 40 µm or 5 µm
- ✓ Bracket kept or removed (J); add a lubricator = GAFC
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, gauge/knob accessible.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure with the pressed-in self-locking knob; pull to adjust, press to lock.
- check Drain condensate before the 100 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 880 g unit on its bracket, not on the tubing.
This is a filter and regulator only — it delivers filtered, pressure-set air with no added oil. If a downstream tool needs lubrication, add a separate lubricator or order the GAFC400-10 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR400C10LNW FAQ
It has a 3/8in port, a pressure range of 0.15-0.4 MPa (20-58 psi), a max 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, the drain bowl capacity is 100 cc, and the unit weighs 880 g.
The metal bowl (C) is a build choice for the environment, while the no-gauge option (N) means you must add a gauge to the 1/4in connection to read the set pressure. The 5 um element (W) provides finer filtration than the standard 40 um.
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