The AirTAC GFR300C08LJC2G AirTAC Filter Regulator G1/4 Low-Pressure 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 GFR300C08LJC2G is a GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates the downstream pressure. This unit sits on the GFR300 size with a G1/4 (BSPP) port, the standard 40 um filter element and a differential-pressure drain, the default drain type for the family. It is the low-pressure type, intended for circuits that run below the standard regulator band; the exact adjustment range for this variant is not published in the catalogue, and we confirm it on request. A round pressure gauge scaled in psi is fitted, and the code specifies no reverse (check) valve and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the size-300 bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 40 um standard or 5 um (code W) element, embedded square or external round gauges scaled in MPa, psi or bar, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rated figure, so send us your application details and we will confirm the sizing and the datasheet figures on request.
| Model | GFR300C08LJC2G AirTAC Filter Regulator G1/4 Low-Pressure |
|---|---|
| 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) |
Regulating supply air to clamping fixtures whose actuators are rated below the standard regulator band. The 40 um element keeps swarf-contaminated shop air out of the clamp valves, and the fitted psi gauge gives the setter a local readout while dialling in the setpoint.
Feeding a bench-top air manifold in a test or research lab where instruments need steady, low-pressure air. The 40 um element protects sensitive fittings from particulate, and the differential-pressure drain handles condensate collecting in the bowl without a manual drain routine.
Regulating low-pressure air to the gating and stopper cylinders on a bottling conveyor. The G1/4 port drops straight into the machine's existing G-threaded circuit, and the psi gauge lets line staff verify supply pressure at the point of use.
The decodable choices on this GFR300 unit are fixed by the code: size 300 with a G1/4 port, low-pressure regulator type, 40 um element, differential-pressure drain, round psi gauge, no bracket, no check valve, G (BSPP) thread. If your circuit needs a different port, step up or down through the 200/300/400/600 size ladder to match the air demand of the line; PT and NPT threads, manual or automatic drains, the 5 um (W) element, square gauges and other scale options are all available in the same series. Flow is published as curves, not as a single rating, so 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 rather than a single rated figure, so we do not quote a rated flow, Cv or l/min number for this unit. Send us your port size, operating pressure and expected air demand, and we will confirm the sizing from the datasheet on request before you order.
The C2 code in GFR300C08LJC2G fits an external round gauge scaled in psi; the embedded square gauge is the standard fitting for the family, and MPa, psi and bar scales are available as order options. Similarly, the G (BSPP) thread here is an order option against the PT standard, so alternative thread and gauge combinations can be specified in the same series.
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.