The AirTAC GFR300C08LF2WGK 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 GFR300 series is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the size 300 unit with a G1/4 (BSPP) port, the 5 um fine filter element (W grade), the low-pressure regulator type, a differential-pressure drain and a metal bowl. It is supplied with the embedded square gauge on a psi scale, a reverse/check valve fitted to hold downstream pressure through upstream dips, and a mounting bracket included. 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 port sizes from 1/8 to 1 inch, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, and G or NPT threads orderable alongside the PT standard. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C08LF2WGK 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) |
On a bottling line, the cylinders that raise and lower stop gates run on clean, regulated air. This unit strips water and particles down to 5 um ahead of the gate circuit, and the fitted check valve holds the downstream setting while upstream supply dips.
A laboratory air skid feeding bench instruments benefits from 5 um filtration and a stable low-pressure setting. The embedded square psi gauge gives the operator a direct local readout at the point of use, and the differential-pressure drain bleeds collected water without shutting the skid down.
In a spray booth, the gun circuit wants fine filtration ahead of regulation. The 5 um element catches particles that would mar finishes, and the low-pressure regulator type trims the atomizing air to the setting the gun manufacturer specifies, with the check valve keeping the line charged between trigger pulls.
Choose the size by port and flow: size 300 carries the 1/4 in port here, and larger sizes move more air, so match the step to your circuit rather than upsizing blindly. This unit is already specified with the 5 um element (the catalogue default is 40 um), the differential-pressure drain, the low-pressure regulator type, a square psi gauge and a reverse/check valve. If you need a different drain, a 40 um element, an MPa or bar gauge scale, or an external round gauge instead of the embedded square one, those are catalogue options. Thread is G (BSPP) on this unit; PT is the standard thread and NPT is orderable. Bracket included. Because flow is published as curves rather than a single rating, send us your application 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 GFR300 flow as curves, not as a single rated figure, so we do not quote a number here. Send us your application and we will confirm the datasheet figures and check the sizing against your circuit before you order.
The W code selects the 5 um filter element instead of the 40 um catalogue standard, for finer particulate removal. The L code selects the low-pressure regulator type for circuits set below the standard range; its exact setting range is not published in the catalogue, so we confirm it on request. Everything else is standard for this configuration: differential-pressure drain, square psi gauge, fitted check valve and included bracket.
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.