Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJK 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 materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJK
The GAFR400N15ALJK is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 1/2in port model weighs 880 g and features a nylon bowl, with its flow curve plotted to 7000 L/min at 0.7 MPa inlet.
This lower-pressure unit regulates from 0.15-0.4 MPa (20-58 psi) and comes with a 40 um element. The automatic drain handles condensate from the 100 cc bowl, while the fitted circular gauge shows the MPa/psi scale. A reverse-flow valve is attached as an ordering difference.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJK |
|---|---|
| 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 | Nylon |
| Drain type | Automatic 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. 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 GAFR400N15ALJK
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-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". |
| A | Drain: Automatic drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (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 GAFR400N15ALJK Is Used
Precision pressure setting
Feed a single precision valve or small instrument loop that requires a stable, lower regulated pressure without the bulk of separate filter and regulator bodies.
Wet line condensate control
Use the automatic drain on a wet compressed-air line serving a 1/2in drop, letting the 100 cc bowl shed water without daily manual draining.
Compact machine build
Mount this 880 g unit on a machine frame where rail width is tight, replacing two separate components with one body that filters and regulates in place.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJK the Right Air-Prep Unit?
Choose this GAFR400 for 1/2in piping where a compact footprint matters less than condensate capacity; its 100 cc drain bowl holds about 2.9 times the condensate of a GAFR300's 60 cc bowl. The nylon bowl suits applications where a transparent PC bowl is not preferred, though both share the same 1.0 MPa (145 psi) maximum and -5 to 70 C temperature rating. The automatic drain (A) handles wet or unattended lines without manual intervention, while the J code means no mounting bracket is included. The L type tops out at 0.4 MPa, so if your machine may ever need more pressure, select the standard S version instead. A 40 um element is fitted; the PT thread matches the MPa/psi gauge scale. The K code includes a reverse-flow valve, named here as an ordering difference only. If oil is needed downstream, order the matching GAFC400-15 combination instead of this unit. Note that 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 (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 GAFR400N15ALJK FAQ
This filter & regulator has a 1/2in port, a pressure range of 0.15-0.4 MPa (20-58 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 100 cc drain bowl, and weighs 880 g. The element is 40 um and the drain is automatic.
The K indicates a reverse-flow (reflux) valve is attached to the GAFR400N15ALJK. It is an ordering difference shown as a separate pneumatic symbol; the catalogue defers its function details to another page not included in our data.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.