Airtac GAFR Adjustable Filter Regulator GAFR400C10SJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10SJN 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 40 µm filter element and regulates 0.15 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/8"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10SJN
The GAFR400C10SJN is a filter and regulator combined into a single metal-bodied unit, so incoming air is spun to separate liquid water and solid particles before a balanced regulator sets a steady outlet pressure. This 3/8" port model operates from 0.15 to 0.9 MPa (20-130 psi) with a 40 um element, and its 100 cc condensate bowl collects what the diversion stage removes.
Because filtering and regulation share one body, this replaces a separate GAF filter plus GAR regulator, eliminating two potential leak points and reducing rail space. The pressed-in self-locking knob resists set-pressure drift from vibration, and the 880 g mass signals a unit that needs a proper panel or frame mount rather than support from the tubing.
Airtac GAFR Adjustable Filter Regulator GAFR400C10SJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10SJN |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 | Not included (J) |
| 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 GAFR400C10SJN
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| J | No bracket (J) — supplied without the mounting bracket. |
| N | No pressure gauge; 1/4" gauge connection. |
| (blank) | Filtering grade 40 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 GAFR400C10SJN Is Used
CNC coolant valves
Feed a 3/8" line to solenoid valves controlling coolant flow on a CNC lathe, where steady pressure keeps the cutting fluid stream consistent and the metal bowl shrugs off occasional splashes.
Assembly station headers
Mount on a panel above a manual assembly bench to supply pneumatic screwdrivers and fixturing clamps, with the semi-auto drain letting operators clear condensate during shift changes.
Test rig air supply
Supply a leak-test fixture that cycles at moderate frequency, where the 100 cc bowl handles condensate between checks and the 880 g body stays stable on a rigid frame.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10SJN the Right Air-Prep Unit?
Choose the body and port first: the GAFR400 with a 3/8" port sits between the GAFR300 (60 cc bowl, 3500 L/min envelope) and the GAFR500 (108 cc bowl, 8000 L/min envelope at 0.7 MPa inlet). The metal bowl suits demanding build environments, though the common spec of 1.0 MPa max and -5 to 70 C applies to all bowl materials, so confirm compatibility for aggressive surroundings. This model has no mounting bracket (J code), so plan for panel mounting or an existing bracket, and no gauge is fitted, leaving a 1/4" gauge connection for later addition. The semi-auto plus manual drain handles routine service, while the 40 um element covers general shop air; if finer filtration is needed, the W option offers 5 um. For downstream lubrication, order the matching GAFC400-10 combination instead. 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan a supply near 1.0 MPa for 0.9 MPa outlet.
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 GAFR400C10SJN FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g. Port size is 3/8" with a 40 um element and PT threads.
The J code omits the mounting bracket for panel-mount installations or where an existing bracket is reused, and the N code after the port means no gauge is supplied. The gauge connection is 1/4" if you add one later, and the PT thread option uses an MPa/psi scale.
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