The AirTAC GFR300C08MLF2WK AirTAC Filter Regulator PT1/4 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 GFR300C08MLF2WK is a filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a drain bowl but no lubricator. This configuration is built around a PT1/4 (1/4 in) port with PT thread, a 5 um filter element for finer removal than the 40 um standard, a manual drain you open by hand to empty collected condensate, and the low-pressure (L) regulator type for circuits that run below standard regulating ranges. An embedded square gauge with a psi scale is fitted, a reverse/check valve is included, a mounting bracket comes with the unit, and the bowl is metal.
This is a genuine AirTAC part. The GFR300 sits in the GFR size range of 200, 300, 400 and 600, with port sizes stepping from 1/8 in up to 1 in; drain types, 40 um or 5 um elements, gauge styles and scales, and G or NPT thread options are all orderable within the series. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing from the datasheet for your application.
| Model | GFR300C08MLF2WK AirTAC Filter Regulator PT1/4 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) |
Supplying filtered, regulated air to clamp cylinders on a CNC machining fixture, where the 5 um element helps keep the clamp valve clean and the low-pressure type suits a clamp circuit that holds at a reduced setting.
Conditioning air for the small pusher and diverting cylinders along a packaging conveyor, with regulation set locally at the line and the manual drain emptied during changeover.
Filtering and regulating air at a paint spray station where no oil may be added to the air stream - a filter regulator alone is the right unit, and the 5 um grade supports finish quality.
The real, decodable choices in this series are: size and port (200/300/400/600, ports 1/8 in to 1 in - pick the step that matches your piping and the flow your line needs); drain type (manual, automatic, or differential-pressure - this unit is manual, the simplest option but it needs someone to open the drain periodically); filter grade (40 um standard vs the 5 um fitted here for finer protection of downstream components); gauge style and scale (this code carries the embedded square gauge with a psi scale; an external round gauge is optional and MPa/psi/bar scales are orderable); and thread (PT is the standard on this code, with G and NPT as order options). A mounting bracket is included. Two honest notes before you order: AirTAC publishes flow as curves, not a single rated figure, so send us your flow and pressure requirements and we will confirm the right size from the datasheet; and the exact regulating range of the low-pressure (L) type is not published here, so confirm it with us against your set pressure.
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 GFR300 flow as curves, not as a single rated number, so we do not quote a figure on this page. Send us your required flow and working pressure and we will confirm the sizing of GFR300C08MLF2WK directly from the datasheet before you order.
The M in the code means a manual drain: someone opens it by hand to empty the water the filter has collected. If the unit is mounted where regular access is impractical, the same GFR series is orderable with an automatic or a differential-pressure drain instead - on this code the manual drain is what is fitted.
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.