The AirTAC GFR300C08ALF2WG 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 GFR300C08ALF2WG is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 300 size with a G1/4 (BSPP) port, a 5 um filter element (the finer of the two published grades), an automatic drain that discharges collected condensate from the metal bowl without manual attention, and the low-pressure regulator type fitted with an embedded square gauge reading in psi. A mounting bracket is included and no reverse/check valve is fitted.
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 catalogue options including manual or differential-pressure drains, the 40 um standard element, MPa or bar gauge scales, an external round gauge, and PT or NPT thread variants. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Because flow is published as curves rather than a single rating, we confirm flow and datasheet figures for your application on request.
| Model | GFR300C08ALF2WG 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) |
Filtered, regulated supply to low-pressure pneumatic clamps and workholding fixtures, where the 5 um element helps keep water and fine particulate out of clamp cylinders and the psi-scale gauge gives a direct reading at the panel.
Feeding pilot valves and small actuators on a cartoning or wrapping line that runs at reduced pressure, with the automatic drain clearing bowl condensate without stopping the machine.
Regulated low-pressure air for lab rigs and test benches that need clean supply at reduced pressure, with the included bracket allowing mounting on the frame next to the bench.
Every choice on this unit is decodable from the code. Size 300 with the 1/4 in port suits lines whose air demand sits in the GFR300 band - step up to 400 or 600 for larger ports, or down to 200 for compact points of use. The 5 um element (code W) is the finer of the two published grades, chosen where downstream valves and cylinders tolerate less particulate; 40 um is the standard alternative. The automatic drain (A) suits unattended or hard-to-reach installations, with manual and differential-pressure drains as the other catalogue options. The low-pressure regulator type (L) is selected where the circuit runs at reduced pressures - the exact set range for this type is not published in our sheet, so confirm it with us. The gauge here is the embedded square type reading in psi; MPa and bar scales are available, and an external round gauge can be ordered instead. This unit carries a G (BSPP) thread; PT and NPT versions are catalogue options, and the included bracket covers panel or frame mounting.
Because AirTAC publishes flow as curves rather than a single rated figure, we do not quote a flow number here. Send us your application's air demand and we will confirm sizing against the datasheet curves 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 GFR300 flow as curves, not as a single rated figure, so we do not quote a number here. Tell us your application's air demand and we will confirm the flow from the datasheet curves before you order.
This is the low-pressure regulator type (code L). The exact adjustment range for the low-pressure type is not published in our datasheet extract, so we confirm it on request rather than estimate it. What is published: maximum inlet pressure of 1.0 MPa (145 psi) and a working temperature range of -5 to 70 C (non-freezing).
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.