Airtac GAFR Adjustable Filter Regulator GAFR40015LK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015LK 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 1/2" ports, a 40 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 size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialPC
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40015LK
The GAFR40015LK is a filter & regulator from AirTAC, combining a diversion filter and a balanced pressure regulator in a single body. It handles a 1/2in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi) with a 40 um element, all while weighing 880 g.
This unit's single body replaces a separate filter plus regulator, reducing potential leak points and saving rail space. The diversion structure spins incoming air to separate liquid water and solid particles into the 100 cc drain bowl, while the pressed-in self-locking knob helps maintain the set pressure against vibration.
Airtac GAFR Adjustable Filter Regulator GAFR40015LK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015LK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | PC |
| 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR40015LK
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. 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). |
| (blank) | Mounting bracket included. |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
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 GAFC400-15 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 · 1/2" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR40015LK Is Used
Precision Fixture Clamping
Feed a precise, lower-pressure air supply to a clamping fixture on a machining center, ensuring consistent hold force without over-pressurizing delicate workpieces.
Lab Pneumatic Circuits
Supply filtered air at a controlled low pressure to laboratory test rigs or pneumatic actuators in experimental setups, where a stable 0.15-0.4 MPa band is required.
Assembly Line Tooling
Power small assembly tools and single-acting cylinders on a workbench, where the integrated filter protects the tooling and the lower pressure setting prevents damage to light components.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015LK the Right Air-Prep Unit?
Choose the GAFR40015LK for a 1/2in line needing a lower regulated output, capped at 0.4 MPa. The PC bowl is the standard build, and the semi-auto plus manual drain gives you both automatic condensate release and a manual override. The mounting bracket is included, and a circular gauge with MPa/psi scale is fitted, matching the PT thread. The 40 um element handles general workshop air, and the reverse-flow (reflux) valve is attached as an ordering difference. If your downstream process needs oil, order the matching GAFC400-15 combination instead, as this unit does not lubricate. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of the regulated range.
Quick checklist
- ✓ Body size for your peak flow (1/2" 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 GAFC400-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR40015LK FAQ
The GAFR40015LK is a filter & regulator with a 1/2in port. Its pressure range is 0.15-0.4 MPa (20-58 psi), with a max pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). The operating temperature range is -5 to 70 C. It has a 100 cc drain bowl and weighs 880 g.
The 'L' indicates a lower-pressure regulator type, with a working range of 0.15-0.4 MPa (20-58 psi) instead of the standard 0.15-0.9 MPa. This makes it suitable for applications requiring a limited, lower outlet pressure. The 'K' at the end signifies the reverse-flow (reflux) valve is fitted.
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