Airtac GFR Filter Regulator GFR300C08AJF1W
The AirTAC GFR Filter Regulator GFR300C08AJF1W 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 GFR300C08AJF1W
GFR300C08AJF1W is an AirTAC GFR filter regulator: a 300-size unit that filters compressed air and regulates downstream pressure in one body. The W suffix in this configuration selects the finer 5 um filter element, suited to protecting valves, cylinders and instruments from finer particulate and carryover. It carries a 1/4 in PT port, an automatic drain that clears collected condensate on its own, and an embedded square gauge scaled in MPa. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range with automatic drain is 0.15-0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C. The bowl is polycarbonate at this size; code J means no mounting bracket is supplied.
This is a genuine AirTAC part. The GFR family is available in 200, 300, 400 and 600 sizes with 1/8 in to 1 in ports, differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) elements, gauge and G/NPT thread options, and an optional bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm datasheet values for your application before ordering.
Airtac GFR Filter Regulator GFR300C08AJF1W Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AJF1W |
|---|---|
| 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 GFR300C08AJF1W
| 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 GFR300C08AJF1W Is Used
Paint-booth spray-gun supply
Conditions air at a spray booth regulator station, where the 5 um element helps keep water and fine particulate out of the finish and the automatic drain copes with humid-day condensate.
CNC machine tool air supply
Feeds regulated air to tool-change actuators, air blasts and spindle-seal circuits on a machining centre, with the 5 um grade suiting the machine's pilot valves.
Assembly-bench air drops
Point-of-use filtering and regulation at workstation drops in an assembly area, so operators set a stable line pressure while the automatic drain keeps the bowl clear.
Is the Airtac GFR Filter Regulator GFR300C08AJF1W the Right Unit?
This configuration pairs the 300-size body and 1/4 in PT port with the 5 um W-grade element, an automatic drain and a square MPa gauge, with no bracket. Choose 5 um where downstream components are sensitive; the 40 um standard grade remains the economical choice for general actuation. Automatic drain suits unattended operation, while manual and differential-pressure drains are the other family options. G (BSPP) and NPT threads are orderable alternatives to PT, and a mounting bracket can be added where needed.
Because AirTAC publishes flow only as curves, not as a single rated number, send us your flow and pressure requirements and we will confirm sizing from the datasheet 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 GFR300C08AJF1W FAQ
AirTAC publishes flow for this series as curves, not as a single rated number, so we do not quote one figure. Share your flow and pressure points and we will confirm the datasheet figures on request before you order.
W selects the finer 5 um grade, the better match for pilot valves, instruments and finish-critical processes such as spraying; the standard 40 um element suits general actuation. Both grades are available across the GFR family with the same drain and gauge choices.
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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 GFR300C08AJF1W
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.