Airtac GFR Filter Regulator GFR300C08AF3
The AirTAC GFR Filter Regulator GFR300C08AF3 is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
- TypeFilter regulator
- Port sizeSee datasheet
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeFitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GFR Filter Regulator GFR300C08AF3
This AirTAC GFR filter regulator removes water and particulate from compressed air and sets downstream pressure in a single 1/4in body. It is the 300 size with a PT1/4 port, the standard 40 um filter element, an automatic drain that clears condensate unattended, and the embedded square gauge scaled in bar for set-and-check adjustment within the 0.15-0.9 MPa (20-130 psi) regulation range. Maximum inlet pressure is 1.0 MPa (145 psi), and the polycarbonate bowl is rated -5 to 70 C.
This is a genuine AirTAC part from the G-series, which spans 200, 300, 400 and 600 sizes with 1/8in to 1in ports, 40 um or 5 um elements, three drain types, PT, G or NPT threads, gauge scales in MPa, psi or bar, and optional brackets. Published flow takes the form of curves, not a single rated figure, so we confirm datasheet and sizing data for your application on request.
Airtac GFR Filter Regulator GFR300C08AF3 Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AF3 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
Model Code: Airtac GFR Filter Regulator GFR300C08AF3
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
Size Class
- GFR200PT1/8" - PT1/4"
- GFR300PT1/4" - PT1/2"
- GFR400PT3/8" - PT1/2"
- GFR600PT3/4" - PT1"
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Where the Airtac GFR Filter Regulator GFR300C08AF3 Is Used
Diverter and stopper cylinders on conveyor lines
Filtered, regulated 1/4in air to the diverters and stops along a sorting conveyor, with the automatic drain keeping condensate off the cylinder seals during long shifts.
Actuation of process valves on a water-treatment skid
Supplies regulated air to pneumatically actuated diaphragm and butterfly valves, with the bar-scaled gauge matching the settings on the skid's instrumentation drawings.
Controls on dock levellers at a loading bay
One filter regulator per bay feeds the leveller and lip cylinders, and the automatic drain copes with condensate in damp, unattended dock environments.
Is the Airtac GFR Filter Regulator GFR300C08AF3 the Right Unit?
Choose the size and port step against the air your circuit needs; this 300 body takes a 1/4in PT port. This unit keeps the standard 40 um grade, which suits general plant air; specify the 5 um element where finer protection is needed. The automatic drain fits duty where nobody drains bowls by hand; manual and differential-pressure drains are the alternatives. The bar-scaled square gauge suits European-style plant drawings, with MPa and psi scales, G and NPT threads, and brackets all available as catalogue options. Flow is published as curves, so ask us to confirm sizing against your application before you order.
Quick checklist
- ✓ Body size for your peak flow (See datasheet here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Oil needed downstream? Use GFC instead
Installation & Maintenance Notes
- check Mount vertically, bowl down, following the airflow arrow.
- check One body does the filtering and the regulating — no separate regulator needed.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
Airtac GFR Filter Regulator GFR300C08AF3 FAQ
No single rated flow figure exists in the catalogue; AirTAC publishes filter-regulator performance as flow curves. Tell us the application and duty point and we will confirm the datasheet flow data and whether the 300 size with the 1/4in port is right, on request.
Yes. The gauge code sets the scale: 1 is MPa, 2 is psi and 3 is bar, with the square embedded gauge standard on regulator units. This model is the F3 variant, square and scaled in bar; order the F1 or F2 variant of the same 300-size, 1/4in unit for MPa or psi.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR300C08AF3
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.