The AirTAC GFR300C08AJF2WG AirTAC Filter Regulator G1/4, 5 um 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.
The AirTAC GFR300C08AJF2WG is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This GFR300 configuration is built around a G1/4 (BSPP) port, a 5 um filter element instead of the standard 40 um grade, and an automatic drain that ejects collected condensate from the metal bowl without manual attention. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and an embedded square gauge reading in psi is fitted so the setpoint can be watched directly. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options include manual or differential-pressure drains, 40 um or 5 um elements, MPa, psi or bar gauge scales, G or NPT threads, and a mounting bracket. This unit is fitted without a bracket and without a reverse/check valve. Flow for the family is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GFR300C08AJF2WG AirTAC Filter Regulator G1/4, 5 um |
|---|---|
| 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.
| 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.
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) |
Feeding clean, regulated air to solenoid valves and pneumatic clamps on a CNC machining centre, where the 5 um element protects valve spools from condensate and swarf and the psi gauge keeps clamp pressure set.
Supplying instrument air to pneumatic valve positioners and I/P transmitters on a process skid, with the automatic drain handling condensate in panels that are not checked every shift.
Regulating air to sealing jaws and carton-push cylinders on a packaging conveyor, holding a steady setpoint through shift-long cycling while the filter element keeps water out of the directional valves.
Choose the size by port and flow demand: GFR300 with a G1/4 port suits lines running 1/4 inch air piping; step up to GFR400 or GFR600 for larger ports and higher flow. This unit already carries the finer 5 um element (code W) instead of the standard 40 um grade - keep 5 um where downstream valves and instruments need cleaner air. The automatic drain (code A) is the right choice where the bowl cannot be checked daily; manual and differential-pressure drains are available in other configurations. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are options. The thread here is G (BSPP); PT is the standard thread and NPT can be ordered. No mounting bracket is included, so add the bracket option if you panel-mount.
Flow for this family is published as curves, not a single rated figure, so send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
Quick checklist
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 publishes flow for the GFR series as curves rather than a single rated number, so there is no one l/min or SCFM figure we can quote. Tell us your upstream pressure, set pressure and required flow, and we will confirm the sizing from the datasheet on request.
The W code in GFR300C08AJF2WG selects the 5 um element instead of the standard 40 um grade, giving finer protection for downstream valves and instruments. The A code selects the automatic drain, which expels condensate on its own - useful where bowls are not checked daily. Manual and differential-pressure drains are available in other configurations.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
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.