The AirTAC GFR300C08ALF2WGK 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.
GFR300C08ALF2WGK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. Water and particulate are removed by a 5 um element (code W; 40 um is the standard grade), condensate is expelled through the automatic drain, and the low-pressure (L) regulator type sets downstream pressure for circuits that run below standard settings. This configuration carries a G1/4 (BSPP) port, an embedded square gauge with a psi scale, a fitted reverse/check valve (K), a mounting bracket, and a metal bowl. Maximum working (inlet) pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, MPa, psi or bar gauge scales, PT (standard), G or NPT threads, and standard or low-pressure regulator types. Flow is published as curves rather than a single rated figure, so we confirm flow and other datasheet figures for your operating point on request.
| Model | GFR300C08ALF2WGK 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) |
Filters and regulates supply air to spray guns on a finishing line that runs at reduced settings, with the 5 um element protecting the gun and the automatic drain clearing condensate between shifts.
Point-of-use filtration and regulation for clamping cylinders on a machining centre, with reverse flow blocked at the unit by the fitted check valve and local pressure read on the psi-scale gauge.
Feeds filtered, regulated air to pneumatic actuators on a carton-sealing conveyor, with the automatic drain handling condensate and the bracket allowing panel mounting beside the machine.
Size the unit by port and expected flow: this 300-size unit has a G1/4 port; step up to 400 or 600 for larger ports and more flow, or down to 200 for compact lines. The choices that matter here: drain type (differential-pressure is the default, automatic as fitted on this unit, or manual for infrequent blowing); filter grade (40 um standard, 5 um as coded W for finer protection of downstream components); gauge scale (MPa, psi or bar - this unit carries the embedded square gauge with a psi scale, and an external round gauge is optional); regulator type (standard or low-pressure - this is the low-pressure L type, whose exact setting range is not published, so we confirm it from the datasheet); thread (PT is the standard; G and NPT are order options, and this unit has the G option); and bracket (included here). Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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, not as a single rated figure, so there is no one number we can honestly quote. Send us your port size, inlet pressure and target flow, and we will confirm the sizing from the datasheet before you order.
This is the low-pressure (L) type, and the exact setting range for that variant is not published in the material we hold, so we confirm it from the AirTAC datasheet on request. The maximum working (inlet) pressure is 1.0 MPa (145 psi), and the unit operates from -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.