Airtac GAFR Adjustable Filter Regulator GAFR400N15SNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15SNK 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15SNK
The GAFR400N15SNK is a filter and regulator combined into one body, saving rail space and reducing potential leak points compared to separate units. This 1/2in port model handles a standard pressure range of 0.15-0.9 MPa (20-130 psi) and uses a 40 um element to trap solid particles.
Its nylon bowl holds 100 cc of condensate, and the unit weighs 880 g, indicating a substantial build for machine-level installation. The diversion structure spins incoming air to separate liquid water and solids, while the balanced regulator mechanism helps maintain a steady outlet pressure as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR400N15SNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15SNK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| Bowl material | Nylon |
| 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 GAFR400N15SNK
| 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". |
| (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). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/4" gauge connection. |
| (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 GAFR400N15SNK Is Used
Machine tool circuits
Feed a single machining center's pneumatic controls with clean, regulated air. The 1/2in port and 100 cc bowl suit a machine that runs for a shift between drain checks.
Assembly line stations
Supply a dedicated work fixture or a small bank of cylinders on an assembly line. The 880 g weight and included bracket allow secure mounting to a machine frame or panel.
Test bench air supply
Provide a stable air source for a laboratory test bench or calibration rig. The balanced regulator helps hold the set pressure as the shop supply fluctuates.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15SNK the Right Air-Prep Unit?
Choose the GAFR400 body for medium-flow applications; its 7000 L/min flow curve at 0.7 MPa inlet places it above the GAFR300's 3500 L/min envelope. The nylon bowl offers an alternative to PC or metal, and the included mounting bracket simplifies installation. This model features a semi-auto drain plus a manual drain, and the 40 um element is the standard grade. The PT thread provides an MPa/psi gauge scale, and the reverse-flow (reflux) valve is fitted as an ordering difference. For lines needing lubrication downstream, order the matching GAFC400-15 combination. Remember that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 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 GAFR400N15SNK FAQ
The pressure range is 0.15-0.9 MPa (20-130 psi), with a max pressure of 1.0 MPa (145 psi) and 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 GAFR400N15SNK is supplied without a gauge. The gauge connection is 1/4in, so you can add a compatible pressure gauge later if you need to read the set pressure directly.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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