Airtac GAFR Adjustable Filter Regulator GAFR300N15S
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15S 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 gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15S
The GAFR300N15S is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 1/2in model with a nylon bowl delivers air filtered to 40 um and regulated from 0.15-0.9 MPa (20-130 psi), with a circular gauge showing the MPa/psi scale.
Its diversion structure spins incoming air to separate liquid water and solid particles into the 60 cc drain bowl, while the balanced, self-locking regulator holds the outlet steady as supply pressure varies. Weighing 500 g, this unit suits a mid-size machine header or a multi-tool workbench station.
Airtac GAFR Adjustable Filter Regulator GAFR300N15S Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15S |
|---|---|
| Series | GAFR300 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 | 60 cc |
| Bracket | Included |
| Weight | 500 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 GAFR300N15S
| GAFR300 | GA300 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 08 = 1/4", 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. |
| (blank) | Circular pressure gauge fitted. |
| (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 GAFC300-15 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 | GAFR300 · 1/2" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N15S Is Used
Precision valve actuation
Feed a bank of pneumatic valves on a small assembly machine, where the 40 um filtration protects fine internal passages and the stable regulated pressure keeps cycle times consistent.
Mid-size conveyor line
Supply a 1/2in header on a packaging conveyor, using the 60 cc drain bowl to collect condensate from a moderately wet air supply with the semi-auto drain for periodic manual purging.
Test bench air supply
Provide clean, regulated air to a laboratory test fixture, where the visible gauge lets operators verify the set pressure and the self-locking knob resists drift from bench vibration.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15S the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in ports and a 3500 L/min flow envelope (plotted at 0.7 MPa inlet), stepping up from the GAFR200's 2000 L/min if your line needs more capacity. The nylon bowl is a build choice with the same 1.0 MPa max and -5 to 70 C rating as PC or metal versions, so confirm compatibility for aggressive surroundings. This model includes the mounting bracket and a semi-auto drain plus manual drain, both fitted; the 40 um element is the standard grade. The PT thread sets the gauge scale to MPa/psi, and no reverse-flow valve is fitted. If oil is needed downstream, order the matching GAFC300-15 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the range for regulation.
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 60 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 500 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 GAFC300-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N15S FAQ
The GAFR300N15S is a filter & regulator with a 1/2in port, working pressure range of 0.15-0.9 MPa (20-130 psi), maximum pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g.
The nylon bowl is a material choice for the condensate drain bowl, offered alongside PC and metal options. It holds the same 60 cc capacity and shares the identical pressure and temperature ratings as the other bowl materials, so select based on your environment and confirm compatibility for aggressive conditions.
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 GAFR300N15S
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.