Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNW 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 5 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 grade5 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNW
The GAFR300C15SJNW is a filter and pressure regulator combined into a single body, so it cleans incoming air and sets a steady outlet pressure without needing a separate filter plus regulator pair. This 1/2in port model weighs 500 g and works across 0.15-0.9 MPa (20-130 psi), with a 5 um element for finer particle removal.
Its metal bowl holds 60 cc of condensate, and the unit has both semi-auto and manual drains fitted. The pressed-in self-locking knob resists set-pressure drift from vibration, keeping the outlet stable as supply pressure varies.
Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 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 | 60 cc |
| Bracket | Not included (J) |
| Weight | 500 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 GAFR300 is 1/8" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNW
| GAFR300 | GA300 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). |
| 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). |
| J | No bracket (J) — supplied without the mounting bracket. |
| N | No pressure gauge; 1/8" gauge connection. |
| W | Filtering grade 5 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 GAFR300C15SJNW Is Used
Precision valve actuation
Feed a bank of precision pneumatic valves on a 1/2in manifold, where the 5 um element protects fine internal passages from particle wear.
Machine tool air supply
Supply clean, regulated air to a CNC machine's tool changer and clamping circuits, with the metal bowl standing up to shop-floor conditions.
Test bench setup
Provide a stable 0.15-0.9 MPa source for a pneumatic test bench, where the self-locking knob keeps the setpoint steady during long test cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNW the Right Air-Prep Unit?
Choose this GAFR300 body for 1/2in porting, a 60 cc drain bowl, and a flow curve plotted to 3500 L/min at 0.7 MPa inlet. The metal bowl (C) is a build choice with the same 1.0 MPa max and -5 to 70 C rating as PC or nylon versions, so confirm compatibility for aggressive surroundings. This model has no bracket (J), so plan for panel mounting or an existing bracket, and no gauge (N), leaving a 1/8in gauge connection if you add one later. The 5 um element (W) traps finer particles than the standard 40 um, at the cost of more frequent service, and the PT thread pairs with an MPa/psi gauge scale. Since it has semi-auto plus manual drains, it suits lines where someone can periodically check the bowl. 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 regulated range, so plan a supply near 1.0 MPa for 0.9 MPa output.
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 GAFR300C15SJNW FAQ
It is a filter & regulator with a 1/2in port, working range 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 60 cc drain bowl, and 500 g weight. The element is 5 um, and it has semi-auto plus manual drains.
The J code omits the mounting bracket for panel-mount or existing bracket setups, and the N code means no gauge is supplied. The gauge connection is 1/8in if you add one later, and you will need a separate gauge to read the set pressure.
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 GAFR300C15SJNW
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.