The AirTAC GFR300C08ALJC2WG 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 GFR300C08ALJC2WG is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for low-pressure duty, with a 5 um filter element, an automatic drain that clears collected condensate from the metal bowl without manual attention, a G1/4 (BSPP) port, and an external round gauge reading in psi. No reverse/check valve is fitted and no mounting bracket is included with this code.
This is a genuine AirTAC part from the GFR300 size family, one of four sizes (200, 300, 400, 600) spanning port sizes from 1/8 to 1 inch, with manual, automatic or differential-pressure draining, 40 um or 5 um filtration, and a choice of gauge scales. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm figures against your application.
| Model | GFR300C08ALJC2WG 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, low-pressure regulated air holding swing clamps and hold-downs on a CNC fixture, with the 5 um element protecting seal surfaces and the automatic drain keeping condensate out of the circuit.
Point-of-use supply for small cylinders and diverters on a packaging conveyor, where the round psi gauge lets operators set and check line pressure at a glance without opening the enclosure.
Conditioning a shop-air feed to lab benches and analytical instruments that need particulate-free air at a stable low setpoint, with automatic draining for unattended operation.
When selecting in the GFR300 family, the real choices are: port size (step up from 1/4 in if your demand grows - the 200/300/400/600 sizes cover 1/8 to 1 inch ports); drain type (this unit is automatic, which suits unattended installations; manual and differential-pressure drains are the alternatives); filter grade (5 um here, where 40 um is the standard grade for general-duty air); and gauge (this code carries an external round gauge with a psi scale, while the embedded square gauge with MPa/psi/bar scales is the catalogue standard). Thread is G here; PT is the standard thread and NPT is an order option. No mounting bracket is included.
Because flow is published as curves rather than a single rated figure, we do not quote a flow number here - send us your application details and we will confirm sizing and the low-pressure regulation range from 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 details and we will confirm the flow curve and correct sizing from the datasheet before you order.
The L marks the low-pressure type of regulator rather than the standard version. Its exact adjustment range is not published in the material we hold, so we confirm the range from the datasheet on request. Everything else decodes normally: 5 um filtration, automatic drain, G1/4 port, round psi gauge, no reverse valve and no 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.